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室外管網(wǎng)施工方案 一、工程簡(jiǎn)介 本工程為中國(guó)聯(lián)通晉城分公司綜合樓、辦公樓、生產(chǎn)樓工程的室外管網(wǎng)系統(tǒng),包括室外排水、室外采暖及室外給水工程(生活給水和消防給水)。整個(gè)場(chǎng)地大部分為巖石,其余部分為素土及回填土,具體情況根據(jù)現(xiàn)場(chǎng)施工確定。 二、施工準(zhǔn)備 為了優(yōu)質(zhì)快速建設(shè)好該工程,應(yīng)認(rèn)真做好以下各方面的準(zhǔn)備工作,確保實(shí)現(xiàn)計(jì)劃目標(biāo)。 施工準(zhǔn)備工作, 在項(xiàng)目技術(shù)主管主持下, 施工工長(zhǎng)、質(zhì)檢員認(rèn)真熟悉圖紙、設(shè)計(jì)說(shuō)明,查找相關(guān)標(biāo)準(zhǔn)圖集,做好技術(shù)準(zhǔn)備工作。為保證整個(gè)現(xiàn)場(chǎng)充足的臨時(shí)供水,使管網(wǎng)簡(jiǎn)潔化、規(guī)范化,根據(jù)施工總平面布置圖,結(jié)合工程的用水特點(diǎn)及要求,本室外工程臨時(shí)供水分別在化糞池和消防水池處設(shè)置水龍頭,消防水池和化糞池可以儲(chǔ)備水,以保證施工用水。供水管道均采用 PVC 復(fù)合管,粘膠連接。本工程的所有三級(jí)箱由現(xiàn)場(chǎng)需要進(jìn)行設(shè)置,但所有三級(jí)箱均為 一機(jī)一閘、一漏一箱 進(jìn)行電力控制。動(dòng)力和照明在二級(jí)箱處分開(kāi)設(shè)置,三級(jí)箱處嚴(yán)禁動(dòng)力、照明用電混合使用。本工程的臨設(shè)照明用電采用銅芯線沿墻明敷;施工現(xiàn)場(chǎng)照明用電在地面以下的均采用 36V 以下安全電壓進(jìn)行供電,在地面上的照明用電采用三芯線電力電纜進(jìn)行供電,以達(dá)到用電安全、可靠。生產(chǎn)設(shè)備、相關(guān)的施工材料有序有計(jì)劃的運(yùn)到施工SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 現(xiàn)場(chǎng),保證施工人員的數(shù)量,按預(yù)定工期完成任務(wù)。 三主要工程項(xiàng)目的施工方案、施工方法 1 雨污水管道施工 施工工序 施工準(zhǔn)備測(cè)量放線土石方開(kāi)挖溝槽清理(平整)管道墊層管道安裝管道連接檢查井砌筑管道試驗(yàn)土方回填夯實(shí) 測(cè)量放線 在現(xiàn)場(chǎng)內(nèi)建立高程測(cè)量控制網(wǎng),管道標(biāo)高按設(shè)計(jì)坡道,每 10m 計(jì)算一個(gè)標(biāo)高點(diǎn),嚴(yán)格控制標(biāo)高,保證各個(gè)管道能夠按設(shè)計(jì)標(biāo)高鋪設(shè), 根據(jù)設(shè)計(jì)圖紙檢查井井號(hào),放出管道中心線,根據(jù)高程差按開(kāi)挖邊坡推算兩側(cè)開(kāi)挖寬度。并用石灰粉或滑石粉撒出兩側(cè)開(kāi)挖范圍線,以指導(dǎo)溝槽開(kāi)挖施工。待溝槽開(kāi)挖至設(shè)計(jì)高程時(shí),采用坐標(biāo)法放樣。定出檢查井中心位置,并用木樁做好標(biāo)記;并在兩側(cè)增設(shè)保護(hù)樁,以便檢 查井施工及管道安裝過(guò)程中進(jìn)行復(fù)核。 溝槽開(kāi)挖(包括土石方) 本工程室外污水管道管徑為 DN200 的鋼筋混凝土管道,雨水管道為DN300 的鋼筋混凝土管,院內(nèi)部分為機(jī)械開(kāi)挖,院內(nèi)最后一個(gè)檢查井至市政污水井之間市政管道管線較多,采用人工開(kāi)挖。平均深度在SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 0.851m 左右,土質(zhì)較好,且多為石方,開(kāi)挖的時(shí)候槽底原狀地基土不得擾動(dòng),機(jī)械開(kāi)挖時(shí)槽底預(yù)留 200 300mm 土層由人工開(kāi)挖至設(shè)計(jì)高程,夯實(shí)整平,石方超挖的部分采用砂或細(xì)土回填,溝底整平夯實(shí),然后按設(shè)計(jì)標(biāo)高鋪混凝土墊層,敷設(shè)管道。 本設(shè)計(jì)為給出溝槽開(kāi)挖寬度,按下式進(jìn)行溝槽開(kāi)挖 B D0 2(b1 b2) 公式一 式中 B 管道溝槽底部的開(kāi)挖寬度 (mm); D0 管外徑 (mm); b1 管道一側(cè)的工作面寬度 (mm),可按下表選?。?b2 有支撐要求時(shí),管道一側(cè)的支撐厚度,可取 150200mm; 管道一側(cè)的工作面寬度 管道的外徑 D0 管道一側(cè)的工作面寬度 b1 (mm) 混凝土類管道 金屬類管道、化學(xué)建材管道 D0 500 剛性接口 400 300 柔性接口 300 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 500 D0 1000 剛性接口 500 400 柔性接口 400 1000 D0 1500 剛性接口 600 500 柔件接口 500 1500 D0 3000 剛性接口 800 1000 700 柔性接口 600 注: 1 槽底需設(shè)排水溝時(shí), b1應(yīng)適當(dāng)增加; 2 管道有現(xiàn)場(chǎng)施工的外防水層時(shí), b1宜取 800mm; 3 采用機(jī)械回填管道側(cè)面時(shí), b1需滿足機(jī)械作業(yè)的寬度要求。 由于本工程所處地段土質(zhì)差別較大,且開(kāi)挖深度在 5m 以內(nèi),溝槽不設(shè)支撐時(shí),根據(jù)不同土質(zhì)按下表選取不同的放坡系數(shù),溝槽邊坡最陡坡度按照下表的規(guī)定放坡 。 深度在 5m 以內(nèi)的溝槽邊坡的最陡坡度 土的類別 邊坡坡度 (高:寬 ) 坡頂無(wú)荷載 坡頂有靜載 坡頂有動(dòng)載 中密的砂土 1 1.00 1 1.25 1 1.50 中密的碎石類土 (充填物為砂 1 0.75 1 1.00 1 1.25 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 土 ) 硬塑的粉土 1 0.67 1 O.75 1 1.00 中密的碎石類土 (充填物為黏性土 ) 1 0.50 1 O.67 1 O.75 硬塑的粉質(zhì)黏土、黏土 1 0.33 1 0.50 1 0.67 老黃土 1 0.10 1 0.25 1 0.33 軟土 (經(jīng)井點(diǎn)降水后 ) 1 1.25 溝槽每側(cè)臨時(shí)堆土不得影響建 (構(gòu) )筑物、各種管線和其他設(shè)施的安全;堆土距溝槽邊緣不小于 0.8m,且高度不應(yīng)超過(guò) 1.5m。 防護(hù)措施 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 4.1 最后一個(gè)檢查井至市政污水井之間,由于市政管線較多,采用人工開(kāi)挖,本段需要挖人行道及一段市政路面,需要做好安全防護(hù)措施, 搭設(shè)彩鋼瓦臨時(shí)施工護(hù)欄,特別是在臨街工作面施工中,此項(xiàng)尤為重要。施工護(hù)欄搭設(shè)平面圖及擴(kuò)欄詳圖如下: 因該管網(wǎng)工程施工時(shí)間會(huì)在雨天進(jìn)行,室外雨量較大,為保證施工質(zhì)量及施工安全,避免地面雨水對(duì)管溝及基坑的沖刷,需在離開(kāi)挖工作面邊 500mm 處用磚砌一道坎防止雨水流入溝槽內(nèi)。溝槽內(nèi)的積水,為保證溝槽不長(zhǎng)期受雨水浸泡,保證施工質(zhì)量及安全,采用抽排水方法對(duì)溝槽進(jìn)行排水,其具體 措施見(jiàn)下圖: 生化池防護(hù)欄生化處理池4000施工進(jìn)出口3 m 5 m管溝護(hù)欄3 m 5 m施工護(hù)欄開(kāi)挖管溝2200護(hù)欄立面圖1 2 0 0及 支 撐 D N 4 0鋼管主柱彩鋼瓦1200 管溝護(hù)欄 護(hù)欄立面圖 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 污水井 水泵 4.2 支護(hù)措施 化糞池至院內(nèi)最后一個(gè)污水井,院內(nèi)最后一個(gè)污水井至市政污水井開(kāi)挖較深且為回填土,開(kāi)挖時(shí)采取支護(hù)措施保證施工安全,支護(hù)措施施工圖如下: 木撐板構(gòu)件規(guī)格如下: 1) 撐板厚度為 50mm,長(zhǎng)度為 4m; 2) 橫梁為方木,其斷面尺寸為 150mm 150mm; 2 撐板支撐的橫梁、縱梁和橫撐布置應(yīng)符合下列規(guī)定: 管溝開(kāi)挖及擋土板圖1擋土板及支撐按實(shí)際尺寸10003800設(shè)計(jì)地面標(biāo)高設(shè)計(jì)溝底標(biāo)高SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 1) 每根橫梁或縱梁不得少于 2 根橫撐; 2) 橫撐的水平間距為 2m; 3) 橫撐的垂直間距為 1.5m; 4) 橫撐影響下管時(shí),用相應(yīng)的替撐措施或采用其他有效的支撐結(jié)構(gòu); 3 撐板支撐應(yīng)隨挖土及時(shí)安裝; 開(kāi)始支撐的溝槽開(kāi)挖深度不得超過(guò) 1.0m;開(kāi)挖與支撐交替進(jìn)行,每次交替的深度宜為 0.4 0.8m, 4 溝槽支撐要注意以下事項(xiàng): 支撐應(yīng)經(jīng)常檢查,發(fā)現(xiàn)支撐構(gòu)件有彎曲、松動(dòng)、移位或劈裂等跡象時(shí),應(yīng)及時(shí)處理;雨期應(yīng)加強(qiáng)檢查; 拆除支撐前,應(yīng)對(duì)溝槽兩側(cè)的建筑物、構(gòu)筑物和槽壁進(jìn)行安全檢查。 施工人員應(yīng)由安全梯上下溝槽,不得攀登支撐。 5 拆除撐板 支撐的拆除應(yīng)與回填土的填筑高度配合進(jìn)行,且在拆除后應(yīng)及時(shí)回填; 拆除單層密排撐板支撐時(shí),先回填至下層橫撐底面,再拆除下層橫撐,待回填至半槽以上,再拆除上層橫撐。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 6 土石方外運(yùn):因受施工場(chǎng)地限制及開(kāi)挖土方量大,對(duì)在開(kāi)挖中產(chǎn)生的土石方部分用自卸汽車外 運(yùn)棄渣, 運(yùn)至業(yè)主指定棄渣場(chǎng) 。 4.3 雨污水管道安裝 本工程為鋼筋混凝土管,鋼絲網(wǎng)水泥砂漿抹帶接口。 ( 1) 管道基礎(chǔ) 排水管道的基礎(chǔ)好壞,對(duì)排水工程質(zhì)量有很大影響。本工程采用135混凝土條形基礎(chǔ)?;炷翖l形基礎(chǔ)是沿管道全長(zhǎng)鋪設(shè)的基礎(chǔ)。按管座形式分為 90 、 135 、 180 三種。施工時(shí),在墊層上澆灌 C15號(hào)混凝土?;炷翈位A(chǔ)的幾何尺寸應(yīng)按施工圖的要求確定。在管道基礎(chǔ)施工時(shí),同一直線管段上的各基礎(chǔ)中心應(yīng)在一直線上,并根據(jù)設(shè)計(jì)標(biāo)高找好坡度。本設(shè)計(jì)按排水標(biāo)準(zhǔn)圖 05S7-4 施工。根據(jù)設(shè)計(jì)管徑不同選用不同的基礎(chǔ)寬度。 散管,是指將檢查井疏通好的管子沿溝散開(kāi)擺好。下管,是指把管子從地面放入溝槽內(nèi)。當(dāng)管徑較小、重量較輕時(shí),一般采用人工下管。當(dāng)管徑較大、重量較重時(shí),一般采用機(jī)械下管;但在不具備下管機(jī)械的現(xiàn)場(chǎng),或現(xiàn)場(chǎng)條件不允許時(shí),可采用人工下管。下管時(shí)應(yīng)謹(jǐn)慎操作,保證人身安全。操作前,必須對(duì)溝壁情況、下管工具、繩索、安全措施等認(rèn)真地檢查。人工下管時(shí),將繩索的一端拴固在地錨上(或其他牢固的樹(shù)木或建筑物上),拉住繞過(guò)管子的另一端,并在溝邊斜放滑木至溝底,用撬杠將管子移至溝邊,再慢慢放繩,使 管子沿著滑木滾下。如果管子過(guò)重,人力拉繩困難時(shí),可把繩子另一端在地錨上繞SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 幾圈,依靠繩子與樁的摩擦力可較省力,且可避免管子沖擊而造 下管前應(yīng)檢查管道基礎(chǔ)標(biāo)高和中心線位置是否符合設(shè)計(jì)要求,基礎(chǔ)混凝土強(qiáng)度達(dá)到設(shè)計(jì)強(qiáng)度 50%,且不小于 5MPa 時(shí)方可下管。下管由兩個(gè)檢查井間的一管端開(kāi)始,管道應(yīng)慢慢下落到基礎(chǔ)上,防止下管繩索折斷或突然沖擊破壞管基。管道進(jìn)入溝槽內(nèi)后,馬上進(jìn)行校正找直。校正時(shí),管道接口間應(yīng)留 10mm 間隙;管徑 600mm 時(shí),應(yīng)留有不小于3mm 的對(duì)口間隙。待兩檢查井間的管道全部下完,對(duì)管道的設(shè)置位置、標(biāo)高進(jìn)行檢查,確實(shí)無(wú)誤后,方可進(jìn)行管道接口處理 接口 排水管道的接口形式有承插口、水泥砂漿抹帶接口及套環(huán)接口三種。 本工程污水管道采用鋼絲網(wǎng)水泥砂漿抹帶接口,操作要點(diǎn)如下: 在澆筑管座混凝土?xí)r,將鋼絲網(wǎng)插入接口處,位置靠近管口間隙居中。 抹帶前將管口刷洗干凈,并刷一道水泥漿。 抹第一層水泥砂漿厚度 15mm 左右,壓實(shí)后將鋼絲網(wǎng)從下向上兜起,緊貼底層砂漿,上部搭接長(zhǎng)度應(yīng)大于 10mm,用綁絲扎緊,使鋼絲網(wǎng)表面平整。 待第一層水泥砂漿初凝后再抹第二層砂漿 ,趕光壓實(shí),帶型為矩形,寬度一般為 20mm,帶厚 25mm,鋼絲網(wǎng)寬 18mm。 抹帶完成后,及時(shí)養(yǎng)護(hù)。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 排水管道抹帶接口操作中,如遇管端不平,應(yīng)以最大縫隙為準(zhǔn);接口時(shí)不應(yīng)往管縫內(nèi)填塞碎石、碎磚,必要時(shí)應(yīng)塞麻繩或在管內(nèi)加墊托,待抹完后再取出。抹帶時(shí),禁止在管上站人、行走或坐在管上操作。 排水管道接口完畢,填料強(qiáng)度達(dá)到要求后,即可進(jìn)行充水試驗(yàn)及回填。在安裝過(guò)程中,一定要作好管道安裝標(biāo)高和位置檢查及充水試驗(yàn)記錄,以便于交工驗(yàn)收及存檔。 管道坡度必須符合設(shè)計(jì)要求,無(wú)規(guī)定處不應(yīng)小于下表規(guī)定值。 生活污水、生產(chǎn)廢水、 雨水、生產(chǎn)污水管道敷設(shè)坡度要滿足下表的要求 。 排水管道的最小坡度 管徑 DN( mm) 生活污水 生產(chǎn)廢水、雨水 生產(chǎn)污水 標(biāo)準(zhǔn)坡度 最小坡度 50 0.035 0.025 0.020 0.030 75 0.025 0.015 0.015 0.020 100 0.020 0.012 0.008 0.012 125 0.015 0.010 0.006 0.010 150 0.010 0.007 0.005 0.006 200 0.008 0.005 0.004 0.004 250 - - 0.0035 0.0035 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 300 - - 0.003 0.003 管道埋設(shè)深度 排水管道埋設(shè)深度包括覆土厚度及埋設(shè)深度兩種含義。覆土深度指管道外壁頂部到地面的距離;埋設(shè)深度指管道內(nèi)壁底到地面的距離。要求按照?qǐng)D紙進(jìn)行敷設(shè)埋深。 ( 6) 井室 雨污水檢查井采用 1000 磚砌圓形井,按排水標(biāo)準(zhǔn)圖集 05S7-4 施工,道路中的檢查井采用重型鑄鐵井蓋,雨水口采用平箅式雙箅雨水口,按 05S7-58 施工。 室外排水管道灌水試驗(yàn)和通水試驗(yàn) 管道安裝完畢且經(jīng)檢驗(yàn)合格后,應(yīng)進(jìn)行管道密閉性檢驗(yàn)。采用閉水檢驗(yàn)方法。閉水檢驗(yàn)應(yīng)在管底與基礎(chǔ)腋角部位用砂回填密實(shí)后進(jìn)行,必要時(shí)可在被檢驗(yàn)段管頂回填一定高度(要外露接口處)的條件下進(jìn)行。閉水檢驗(yàn)時(shí),應(yīng)向管道內(nèi)充水并保持上游管頂以上 1m 水頭的壓力,時(shí)間不小于 30min,外觀檢查不得有漏水現(xiàn)象。通水試驗(yàn)應(yīng)該排水暢通,無(wú)堵塞。 ( 8)管溝回填土 在閉水試驗(yàn)完成,進(jìn)行管溝回填土。 1)管頂上部 500mm以內(nèi)不得回填直徑大于 100mm的塊石和凍土塊;SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 500mm 以上部分回填塊石和凍土不得集中;用機(jī)械回填,機(jī)械不得在管溝上行駛。 2)回填土應(yīng)分層夯實(shí)。虛鋪厚度如設(shè)計(jì)無(wú)要求,應(yīng)符合下列規(guī)空。 A.機(jī)械夯實(shí),不大于 300mm; B.人工夯實(shí),不大于 200mm; C.管子接口坑的回填必須仔細(xì)夯實(shí)。 質(zhì)量控制標(biāo)準(zhǔn) 1.保證項(xiàng)目 污水管道的滲出和滲入水量試驗(yàn)結(jié)果必須符合設(shè)計(jì)要求。 管道坡度必須符合設(shè)計(jì)要求和施工規(guī)范規(guī)定。 管道及管座嚴(yán)禁鋪設(shè)在凍土和未經(jīng)處理的松土上。 2.基本項(xiàng)目 接口結(jié)構(gòu)和所用填料符合設(shè)計(jì)要求和施工規(guī)范規(guī)定?;铱诿軐?shí)、飽滿,填料表面凹入承口邊緣不大于 5mm。環(huán)縫間隙均勻。 管道支座構(gòu)造正確,埋設(shè)平整牢固,支座與管子接觸緊密。 管道抹帶材質(zhì)、高度和寬度符合設(shè)計(jì)要求,并無(wú)間斷和裂縫,表面平整。 、成品保護(hù) 鋼筋混凝土管承受外壓較差,易損壞,所以搬運(yùn)和安裝過(guò)程中不能碰撞,不能隨意滾動(dòng),要輕放。 回填土注意事項(xiàng)。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 1)管道施工完畢,應(yīng)及時(shí)進(jìn)行回填,嚴(yán)禁晾溝。 2)澆筑混凝土管墩、管座時(shí),應(yīng)待混凝土的強(qiáng)度達(dá)到 5MPa 以上方可還土。 3)填土?xí)r,不可將土塊直接砸在接口抹帶及防腐層部位。 4)管頂 50cm 范圍內(nèi),應(yīng)采用人工夯填。 質(zhì)量通病預(yù)防注意事項(xiàng) 排水管道漏水 1)管溝超挖后,填土不實(shí),或溝底石頭未打平,管道局部受力不均勻而造成管材或接口處斷裂或活動(dòng)。 2)預(yù)制管時(shí),接口養(yǎng)護(hù)不好,強(qiáng)度不夠而又過(guò)早搖動(dòng),使接口產(chǎn)生裂紋而漏水。 3)未認(rèn)真檢查管材是否有裂紋、砂眼等缺陷,施工完畢又未進(jìn)行閉水試驗(yàn),造成通水后滲水、漏水。 4)地下管道施工完畢,回填土應(yīng)進(jìn)行分層夯實(shí),可采用原土,未嚴(yán)格執(zhí)行回填土操作程序,隨便回填而造成局部土方塌陷或硬土塊砸裂管道。 2 室外給水管道 2.1 測(cè)量放線 在現(xiàn)場(chǎng)內(nèi)建立高程測(cè)量控制網(wǎng),管道標(biāo)高按設(shè)計(jì)坡道,每 10m 計(jì)算一個(gè)標(biāo)高點(diǎn),嚴(yán)格控制標(biāo)高,保證各個(gè)管道能夠按設(shè)計(jì)標(biāo)高鋪設(shè), 根據(jù)設(shè)計(jì)圖紙檢查井井號(hào),放出管道中心線,根據(jù)高程差按開(kāi)挖邊坡推SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 算兩側(cè)開(kāi)挖寬度。并用石灰粉或滑石粉撒出兩側(cè)開(kāi)挖范圍線,以指導(dǎo)溝槽開(kāi)挖施工。待溝槽開(kāi)挖至設(shè)計(jì)高程時(shí),采用坐標(biāo)法放樣。定出檢查井中心位置,并用木樁做好標(biāo)記;并在兩側(cè)增設(shè)保護(hù)樁,以便檢 查井施工及管道安裝過(guò)程中進(jìn)行復(fù)核。 2.2 溝槽開(kāi)挖(包括土石方) 本工程室外給水管道為 PP-R 管,消防管道為 DN100 鍍鋅鋼管,采用機(jī)械開(kāi)挖,平均深度在 0.851m 左右,土質(zhì)較好,且多為石方,開(kāi)挖的時(shí)候槽底原狀地基土不得擾動(dòng),機(jī)械開(kāi)挖時(shí)土方部分槽底預(yù)留200 300mm 土層由人工開(kāi)挖至設(shè)計(jì)高程,夯實(shí)整平,石方超挖的部分采用砂或細(xì)土回填,溝底整平夯實(shí),然后按設(shè)計(jì)標(biāo)高鋪混凝土墊層,敷設(shè)管道。采用機(jī)械開(kāi)挖,開(kāi)挖寬度按實(shí)際開(kāi)挖量,和甲方、監(jiān)理現(xiàn)場(chǎng)測(cè)量。 2.3 管道安裝 2.3 1 室外給水管道 PP-R 管安裝 熱熔連接操作方便,氣密性好,接口強(qiáng)度高。本工程管道連接采用手持式熔接器進(jìn)行熱熔連接。連接前,應(yīng)先清除管道及附件上的灰塵及異物。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 管道連接采用熔接機(jī)加熱管材和管件,管材和管件的熱熔深度應(yīng)符合要求。 公稱外徑( mm) 熱熔深度( mm) 加熱時(shí)間( s) 加工時(shí)間( s) 冷卻時(shí)間( min) 20 14 5 4 2 25 15 7 4 2 32 16.5 8 6 4 40 18 12 6 4 連接時(shí),無(wú)旋轉(zhuǎn)地把管端插入加熱套內(nèi),達(dá)到預(yù)定深度。同時(shí),無(wú)旋轉(zhuǎn)地把管件推到加熱頭上加熱,達(dá)到加熱時(shí)間后,立即把管子與管件從加熱套與加熱頭上同時(shí)取下,迅速無(wú)旋轉(zhuǎn)地、均勻用力插入到所要求的深度,使接頭處形成均勻凸緣。在規(guī)定的加熱時(shí)間內(nèi),剛?cè)劢雍玫慕宇^還可進(jìn)行校正,但嚴(yán)禁旋轉(zhuǎn)。將加熱后的管材和管件垂直對(duì)準(zhǔn)推進(jìn)時(shí)用力不要過(guò)猛,防止彎頭彎曲。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 連接完畢,必須緊握管子與管件保持足夠的冷卻時(shí)間,冷卻到一定程度后方可松手。如下圖所示: 當(dāng) PP-R 管與閥門連接時(shí),應(yīng)采用法蘭連接,閥門下砌混凝土或者專支墩。 2.3.1.1 系統(tǒng)水壓試驗(yàn)要求 在管道系統(tǒng)安裝完畢后再全面檢查,核對(duì)已安裝的管子、閥門、墊片、緊固件等,全部符合設(shè)計(jì)和技術(shù)規(guī)范規(guī)定后,把不宜和管道一起試壓的配件拆除,換上臨時(shí)短管,所有開(kāi)口處進(jìn)行封閉,并從最低處灌水,高處放氣 .對(duì)試壓合格的管道進(jìn)行吹洗工作,直至污垢沖凈為止,并做好各項(xiàng)吹掃清洗記錄和試壓記錄等工作。本工程為 PP-R 管 ,試驗(yàn)SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 壓力 0.8MPa 下,穩(wěn)壓 1h 壓力降不大于 0.05MPa,然后降至工作壓力進(jìn)行檢查,壓力應(yīng)保持不變,不滲不漏。 2.3.1.2 注意的問(wèn)題 1、搬運(yùn)和安裝管道時(shí)應(yīng)避免碰到尖銳物體,以防管道破損。 2、管道安裝過(guò)程中,應(yīng)防止油漆等有機(jī)污染物與管材、管件接觸。 3、安裝與金屬管連接的帶金屬嵌件的專用管件時(shí),不要用力過(guò)猛,以免損傷絲扣配件,造成連接處滲漏。 4、管材和管件加熱時(shí),應(yīng)防止加熱過(guò)度,使厚度變薄。管材在管配件內(nèi)變形。 5、在熱熔插管和校正時(shí),嚴(yán)禁旋轉(zhuǎn)。 6、操作現(xiàn)場(chǎng)不得有明火,嚴(yán)禁對(duì)管材用明火烘彎。 7、安裝中斷或完畢的敞口處,一定要臨時(shí)封閉好,以免雜物進(jìn)入。 2.3.1.3 成品保護(hù) 管件和管材不應(yīng)長(zhǎng)期置于陽(yáng)光下照射,為避免管子在儲(chǔ)運(yùn)時(shí)彎曲,堆放應(yīng)平整,堆置高度不得大于 2m。搬運(yùn)管材和管件時(shí),應(yīng)小心輕放,避免油污,嚴(yán)禁劇烈撞擊,與尖銳觸碰和拋、摔、拖。 埋暗管封蔽后,應(yīng)在墻面明顯位置,注明暗設(shè)管的位置及走向,嚴(yán)禁在管上沖擊或釘金屬釘?shù)燃怃J物。 道安裝后不得作為拉攀、吊架等使用。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 2.3.2 消防管道安裝 本工程消防管道采用鍍鋅鋼管, 鍍鋅鋼管埋地鋪設(shè)要根據(jù)設(shè)計(jì)要求與土質(zhì)情況做好防腐處理,采用一布兩油的防腐處理,刷一遍瀝青漆再纏一道玻璃絲布再刷一道瀝青漆 ,閥門采用法蘭連接,水泵接合器采用 05S4消防工程 P33 頁(yè)所選用的單組地下式消防水泵接合器,室外消火栓采用如下圖所示。 2 3.2 1 水壓試驗(yàn): 對(duì)已安裝好的管道應(yīng)進(jìn)行水壓試驗(yàn),試驗(yàn)壓力值按設(shè)計(jì)要求及施工規(guī)范規(guī)定確定。管道安裝完畢,驗(yàn)收前應(yīng)進(jìn)行沖洗,使水質(zhì)達(dá)到規(guī)定潔凈要求。并請(qǐng)有關(guān)單位驗(yàn)收,作好管道沖洗驗(yàn)收記錄。 2 3.2.2給水管道安裝質(zhì)量控制 給水管道在埋地敷設(shè)時(shí),應(yīng)在當(dāng)?shù)氐谋鶅鼍€以下,如必須在冰凍線以上鋪設(shè)時(shí),應(yīng)做可靠的保溫防潮措施。在無(wú)冰凍地區(qū),埋地敷設(shè)SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 時(shí),管頂?shù)母餐谅裆畈坏眯∮?500mm,穿越道路部位的埋深不得小于700mm。 給水管道不得直接穿越污水井、化糞池、公共廁所等污染源。 給水系統(tǒng)各種井室內(nèi)的管道安裝,如設(shè)計(jì)無(wú)要求,井壁距法蘭或承口的距離 :管徑小于或等于 450mm時(shí),不得小于 250mm;管徑大于 450mm時(shí),不得小于 350mm。 管網(wǎng)必須進(jìn)行水壓試驗(yàn),試驗(yàn)壓力為工作壓力的 1.5倍,但不得小于0.6MPa。 檢驗(yàn)方法 :管材為 鋼管、鑄鐵管時(shí),試驗(yàn)壓力下 10min內(nèi)壓力降不應(yīng)大于 0.05MPa, 然后降至工作壓力進(jìn)行檢查,壓力應(yīng)保持不變,不滲不漏;管材為塑料管時(shí),試驗(yàn)壓力下,穩(wěn)壓 1h壓力降不大于 0.05MPa,然后降至工作壓力進(jìn)行檢查,壓力應(yīng)保持不變,不滲不漏。 鍍鋅鋼管、鋼管的埋地防腐必須符合設(shè)計(jì)要求,如設(shè)計(jì)無(wú)規(guī)定時(shí),可按表 2.3.2的規(guī)定執(zhí)行。卷材與管材間應(yīng)粘貼牢固,無(wú)空鼓、滑移、接口不嚴(yán)等。 表 2.3.2管道防腐層種類 防腐層層次 正常防腐層 加強(qiáng)防腐層 特加強(qiáng)防腐層 (從金屬表面起 ) 冷底子油 冷底子油 冷底子油 1 瀝青涂層 瀝青涂層 瀝青涂層 2 加強(qiáng)包扎層 加強(qiáng)保護(hù)層 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 3 (封閉層 ) (封閉層 ) 瀝青涂層 瀝青涂層 4 外保護(hù)層 加強(qiáng)包扎層 5 (封閉層 ) 6 瀝青涂層 外保護(hù)層 7 外包保護(hù)層 防腐層厚度不小于 (mm) 3 6 9 給水管道在竣工后,必須對(duì)管道進(jìn)行沖洗,飲用水管道還要在沖洗后進(jìn)行消毒,滿足飲用水衛(wèi)生要求。 2 3 2 3 成品保護(hù) 1 給水管道、管件、閥門及消火栓運(yùn)、放要避免碰撞損傷。 2 消火栓井及表井要及時(shí)砌好,以保證管件安裝后不受損壞。 3埋地管要避免受外荷載破壞而產(chǎn)生變形,試水完畢后要及時(shí)泄水,防止受凍。 4 管道穿鐵路、公路基礎(chǔ)要加套管。 5 地下管道回填土?xí)r,為防止管道中心線位移或損壞管道,應(yīng)用人工先在管子周圍填土夯實(shí),并應(yīng)在管道兩邊同時(shí)進(jìn)行,直至管頂 0.5m以上時(shí),在不損壞管道的情況下,方可采用蛙式打夯機(jī)夯實(shí)。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 6 在管道安裝過(guò)程中,管道未捻口前應(yīng)對(duì)接口處做臨時(shí)封堵,以免污物進(jìn)入管道。 3 暖氣管道安裝 3.1 施工工藝 1根據(jù)設(shè)計(jì)圖紙的位置,進(jìn)行測(cè)量,打樁、放線、挖土、地溝墊層處理等。溝槽的土石方開(kāi)挖,同給水管道開(kāi)挖方式相同,土方部分清底夯實(shí),管周圍填砂不應(yīng)小于 200mm; . 2.直埋供熱管道的保溫采用 05系列建筑標(biāo)準(zhǔn)設(shè)計(jì)圖集 05S8P2頁(yè)( 2)玻璃鋼保護(hù)層,具體做法根據(jù)設(shè)計(jì)說(shuō)明和標(biāo)準(zhǔn)圖集。 3.管道下溝前,應(yīng)檢查溝底標(biāo)高溝寬尺寸是否符合設(shè)計(jì)要求,保溫管應(yīng)檢查保溫層是否有損傷,如局部有損傷時(shí),應(yīng)將損傷部位放在上面,并做好標(biāo)記,便于統(tǒng)一修理。 4.管道應(yīng)先在溝邊進(jìn)行分段焊接,每段長(zhǎng)度在 25m35m 范圍內(nèi)。放管SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 時(shí),應(yīng)用繩 索將一端固定在地錨上,并套卷管段拉住另一端,用撬杠將管段移至溝邊,放好木滑杠,統(tǒng)一指揮慢速放繩使管段沿滑木杠下滾。為避免管道彎曲,拉繩不得少于兩條,溝內(nèi)不得站人。 5.溝內(nèi)管道焊接,連接前必須清理管腔,找平找直,焊接處要挖出操作坑,其大小要便于焊接操作。 6.閥門、配件等,應(yīng)按設(shè)計(jì)要求位置進(jìn)行安裝,并在施工前按施工要求預(yù)先放在溝邊沿線,并在試壓前安裝完畢。 7.直埋管道接口保溫應(yīng)在管道安裝完畢及強(qiáng)度試驗(yàn)合格后進(jìn)行,接口保溫施工前,應(yīng)將接口鋼管表面、兩側(cè)保溫端面和搭接段外殼表面的水分、油污、雜質(zhì)和端面保護(hù)層去 除干凈。 8.管道防腐,應(yīng)預(yù)先集中處理,管道兩端留出焊口的距離,焊口處的防腐在試壓完后再處理。 9. 直埋供熱管道的檢查室施工時(shí),應(yīng)保證穿越口與管道軸線一致,偏差度應(yīng)滿足設(shè)計(jì)要求,并按設(shè)計(jì)要求做好管道穿越口的防水、防腐。 10. 溝槽、檢查室經(jīng)工程驗(yàn)收合格、竣工測(cè)量后,應(yīng)及時(shí)進(jìn)行回填。回填前應(yīng)先將槽底清除干凈,有積水時(shí)應(yīng)先排除。 3.2質(zhì)量控制項(xiàng)目 1.供熱管道的水壓試驗(yàn)壓力應(yīng)為工作壓力的 1.5 倍,但不得小于0.6Mpa,本工程的試驗(yàn)壓力為 0.8MPa。 檢驗(yàn)方法:在試驗(yàn)壓力下 10min 內(nèi)壓力降不大于 0.05 Mpa,然后降至工作壓力下檢查,不滲不漏。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraphFccccccccccccccccccccccccccccccccccccccccccccccccccccccccormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagra 2.管道試壓合格后,應(yīng)進(jìn)行沖洗。 檢驗(yàn)方法:現(xiàn)場(chǎng)觀察,以水色不渾濁為合格。 3.管道沖洗完畢應(yīng)通水、加熱,進(jìn)行試運(yùn)行和調(diào)試。當(dāng)不具備加熱條件時(shí),應(yīng)延期進(jìn)行。 檢驗(yàn)方法:測(cè)量各建筑物熱力入口處供回水溫度及壓力。 4.供熱管道作水壓試驗(yàn)時(shí),試驗(yàn)管道上的閥門應(yīng)開(kāi)啟,試驗(yàn)管道與非試驗(yàn)管道應(yīng)隔斷。 檢驗(yàn)方法:開(kāi)啟和關(guān)閉閥門檢查。 3.3成品保護(hù) 1.管道坡口加工后,若不及時(shí)焊接,應(yīng)采取措施,特別雨季施工期,更須防止已成型的坡口銹蝕,嚴(yán)重影響焊接質(zhì)量。 2.管道保溫 時(shí),嚴(yán)禁借用相鄰管道搭設(shè)跳板。嚴(yán)禁保溫層外殼破損,有破損的地方,統(tǒng)一修補(bǔ)。 3.水壓試驗(yàn)后,必須及時(shí)將管道內(nèi)的水放盡,以免凍壞管道及閥件。 4.通熱時(shí),要設(shè)專人看管正在調(diào)節(jié)的閥件,嚴(yán)禁隨便擰動(dòng)。以免擾亂通熱調(diào)節(jié)程序。 四、 施工目標(biāo) 4.1 質(zhì)量目標(biāo) 1、保質(zhì)方針:加強(qiáng)技術(shù)和施工管理,嚴(yán)格按照相關(guān)規(guī)范、標(biāo)準(zhǔn)圖集及圖紙說(shuō)明為依據(jù),以企業(yè)質(zhì)量宗旨為準(zhǔn)則,不負(fù)業(yè)主重托,嚴(yán)格質(zhì)量管理,確保每道工序受 控,建造業(yè)主滿意工程。 SelectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointselectionParagraaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesTSelectionParbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbagraphFoLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPointse11111111111111111111111111111111lectionParagraphFormatLineSpacingLinesToPointsSelectionParagraphFormatLineSpacingLinesToPoctionParagraphFormatLineSpaci2222222222222222222222ngLinesToPoints2Selec
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