砂石系統(tǒng)生產(chǎn)能力的確定

1、砂石系統(tǒng)生產(chǎn)能力的確定一、選定工作制度根據(jù)系統(tǒng)性質(zhì)及供料、供水、供電、設(shè)備檢修等條件確定。1、月工作天數(shù)：一般為25天。2、日工作班數(shù)：2班或3班作業(yè)。3、日工作小時(shí)：由日工作班數(shù)和各部位生產(chǎn)情況確定。4、毛料采運(yùn)時(shí)間：根據(jù)要求的開采強(qiáng)度，采運(yùn)設(shè)備的生產(chǎn)能力選定。5、半成品加工時(shí)間：要求超徑石處理、予篩分、粗碎、中碎的時(shí)間 一致。3班作業(yè)為1520小時(shí)；2班作業(yè)為11 14小時(shí)。6、成品篩洗時(shí)間：3班作業(yè)為20小時(shí)；2班作業(yè)為12 14小時(shí)。7、人工制砂時(shí)間：要求3班24小時(shí)作業(yè)，以求產(chǎn)品粒度的穩(wěn)定。二、系統(tǒng)生產(chǎn)能力的確定1、系統(tǒng)總生產(chǎn)能力的確定：主要根據(jù)混凝土澆筑月高峰強(qiáng)度、混凝 土級配、各

2、種粒徑的需要量以及生產(chǎn)加工損耗等因素進(jìn)行綜合考慮確定。 按以下公式計(jì)算：Q a k 1系統(tǒng)總生產(chǎn)能力：P =(t/h)M N式中：Q 混凝土澆筑月高峰強(qiáng)度；(m3/月)a每立方米混凝土所需的砂石料；(t/m3)常取2.25 t/m3k 日生產(chǎn)不均勻系數(shù)；常取1.25k1 混凝土澆筑系數(shù)；常取 1.03M 月工作天數(shù)；常取25天2、系統(tǒng)毛料處理能力：Pm = p/n (t/h)式中：n = k2 k3 k4 k5 1+ B (k2 k3)-1P系統(tǒng)總生產(chǎn)能力；(t/h)n成品生產(chǎn)率；常取0.80.9k2粉砂流失系數(shù)；1.11.3k3轉(zhuǎn)運(yùn)損失系數(shù)；1.021.03k4沖洗損失系數(shù)；1.031.1k

3、5級配不平衡系數(shù)；1.01.1B 毛料的含砂率。3、成品礫石(碎石)生產(chǎn)能力：Ps = P (1B) kskz (t/h)成品砂的生產(chǎn)能力：Pr = Pkz(t/h)式中：ks礫石加工(篩洗、轉(zhuǎn)運(yùn))損耗系數(shù)；kr砂料加工(篩洗、轉(zhuǎn)運(yùn)、流失)損耗系數(shù);kz砂石料成品儲(chǔ)存系數(shù)；確定天然砂礫石毛料開采總量Vo yK實(shí)體開挖總量：V二（萬m3）Ao 丫（ 1 Ki） （-K2）（- K3）式中：Vo砂或礫石控制粒徑的需要量；（萬m3）丫 o砂或礫石控制粒徑的容重；丫 一一毛料的天然容重；一般砂取 1.5 t/m3,礫石取1.6t/ m3K 級配變化系數(shù)；常取1.1Ao砂或礫石控制粒徑的天然含量；K1開

4、采損耗系數(shù)；水下開采：砂取 o.35,礫石取o.o5；水上開采：砂取o.15，礫石取o.o3；K2運(yùn)輸、堆存損耗系數(shù)；常取 o.1K3篩分加工損耗系數(shù)；砂取 o.15,礫石取o.o3確定砂礫石料堆料場容量1、確定砂礫石料成品堆料場容量；根據(jù)混凝土高峰期最高月澆筑強(qiáng)度，砂料脫水溫控要求確定：砂石料成品料場容積：Vz二Qh A K2/3K1（萬m3）式中：Qh混凝土最高月澆筑強(qiáng)度；（萬m3/月）A1 m3混凝土所需的砂石料；一般為1.5m3砂石料K2級配變化系數(shù)；1.11.5K1 活庫容與總庫容之比；依地形情況選擇，平地 o.552、確定砂礫石毛料堆場容積毛料堆場容積：V毛二（Qi Q2） nK

5、（萬m3）式中：Qi 毛料持續(xù)開采高峰月平均強(qiáng)度；（萬m3/月）Q2相應(yīng)的月篩分強(qiáng)度；（萬m3/月）n持續(xù)生產(chǎn)月數(shù)；K毛料儲(chǔ)存系數(shù)；（1.11.2）3、考慮受汛期的影響，按下式進(jìn)行堆料場容積的效核計(jì)算;式中：Vs+VmVZ+> QsBA zVs汛期毛料開米量；（萬m3）Vm 毛料堆場儲(chǔ)存量；（萬m3）V z成品砂石料堆場總量（活容積）；（萬m3）B每1 m3混凝土所需的毛料量；A母1 m3混凝土所需的成品砂石料；Kz級配變化系數(shù)；1.11.5Qs 汛期混凝土澆筑總量；（萬m3）膠帶機(jī)功率計(jì)算一、傳動(dòng)滾筒軸功率計(jì)算：1、傳動(dòng)滾筒軸功率計(jì)算：No二（N1+N2+N3） k3k4+刀N4（kw

6、）式中：No傳動(dòng)滾筒軸功率；（kw）Ni輸送帶及托輥轉(zhuǎn)動(dòng)部分運(yùn)轉(zhuǎn)功率；根據(jù)帶寬B（mm）帶速V（m、膠帶機(jī)水平長度Lh（m）查表（表1表4）N2物料水平運(yùn)輸功率（kw）;根據(jù)膠帶機(jī)輸送量Q（t/h）、膠帶機(jī)水平長度Lh（m）查表（表5表7）N3 物料垂直提升功率（kw）;根據(jù)膠帶機(jī)輸送量Q（t/h）、物料提升高度H（m）查表（表8）刀N4卸料器及導(dǎo)料槽附加功率：（根據(jù)帶寬B值、 卸料器個(gè)數(shù) n 值、導(dǎo)料槽長度 L 值查表 9 確定）（kw）k3附加功率系數(shù)；（根據(jù)膠帶機(jī)水平長度Lh值和傾角 （3值查表10選定）k4卸料功率系數(shù)：光面滾筒取 1.16,膠面滾筒取1.11;2、電動(dòng)機(jī)功率計(jì)算：電動(dòng)

7、機(jī)功率：N=K No/n式中：K功率備用系數(shù)，一般取1.4;No 傳動(dòng)滾筒軸功率；（kw）n 總傳動(dòng)效率：光面滾筒取 0.88,膠面滾筒取0.9;膠帶機(jī)極限傾角干砂15°濕砂27。;濕礫石22。;篩過的干礫石18°碎石和未篩過的礫石20°Vx(m/s)Lh (m)、清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大1.01.251.62.01.01.251.62.01.01.251.62.0100.0670.0840.1070.1340.100.1250.160.200.1340.1680.2140.268200.1340.1680.2140.2680.200.2500

8、.320.400.2680.3360.4280.536300.2010.2510.3220.4020.300.3750.480.600.4020.5040.6420.804400.2680.3350.4290.5360.400.500.640.800.5360.6720.8561.072500.3350.4190.5360.6700.500.6250.801.000.6700.841.0701.34600.4020.5030.6430.8040.600.750.961.200.8041.0081.2841.608700.4690.5860.7510.9380.700.8751.121.400.

9、9381.1761.4981.8876800.5360.6700.8581.0620.801.001.281.601.0621.3441.7122.144900.6030.7540.9651.2060.901.1251.441.801.2061.5121.9262.412Vx(m/s)Lh (m)、清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大1.01.251.62.01.01.251.62.01.01.251.62.0100.0820.1030.1310.1640.1240.1550.0.2480.1650.2060.2640.330200.1640.2050.2620.3280.2480.3

10、100.3970.4960.3300.4130.5280.660300.2460.3080.3940.4920.3720.4650.5950.7440.4950.6190.7920.990400.3280.4100.5250.6560.4960.6200.7940.9920.6600.8251.1.32500.4100.5130.6560.8200.6200.7750.9921.2400.8251.1.3201.65600.4920.6150.7870.9840.7440.9301.1901.4880.9901.2381.5841.98700.5740.7180.9181.1480.8681.

11、1.3891.7361.1551.4441.8482.31800.6560.8201.0501.3120.9921.241.5871.9841.3201.6502.1122.64900.7380.9231.1811.4761.1161.3951.7862.2321.4851.8562.3762.97Vx(m/s)Lh (m)、清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大1.01.251.62.01.01.251.62.01.01.251.62.0100.110.0.1760.220.1650.2060.2640.330.220.2750.3520.44200.220.2750.3520.440

12、.3300.4130.5280.660.440.5500.7040.88300.330.4130.5280.660.4950.6190.7920.990.660.8251.1.32400.440.5500.7040.880.6600.8251.1.320.881.1001.4081.76500.550.6880.8801.100.8251.1.3201.651.101.3751.7602.20600.660.8251.1.320.9901.2381.5841.981.321.6502.1122.64700.770.9631.2321.541.1551.4441.8482.311.541.925

13、2.4643.08800.881.1001.4081.761.3201.6502.1122.641.762.2002.8163.52900.991.2381.5841.981.4851.8562.3762.971.982.4753.1683.96V(m/s)Lh (m)、清潔、干燥少量塵埃、正常濕度大量塵埃、濕度大1.01.251.62.01.01.251.62.01.01.251.62.0100.1530.1910.2450.3060.2290.2860.3660.4580.3060.3830.4900.612200.3060.3830.4900.6120.4580.5730.7330.91

14、60.6120.7650.9801.224300.4590.5740.7340.9180.6870.8591.1.3740.9181.1481.4691.836400.6120.7650.9801.2240.9161.1451.4661.8321.2241.5301.9582.448500.7650.9561.2241.5301.1451.4311.8322.2901.531.9132.4483.060600.9181.1481.4691.8361.3741.7182.2.7481.8362.2952.9383.672701.1.3391.7142.1421.6032.0042.5653.20

15、62.1422.6783.4274.284801.2241.5301.9582.4481.8322.2902.9313.6622.4483.0603.9174.896901.3771.7212.2032.7542.0612.5763.304.1222.7543.4434.4065.508"Q（t/h）Lh（ m）102030405060708090100100.005450.01090.01640.0.02750.03270.03820.04360.04910.0545200.01090.02180.0330.0440.05450.06540.07630.08720.09810.10

16、9300.016350.03270.04910.0.08180.09810.11450.13080.14720.1635400.02180.04360.0.0880.1090.13080.15260.17440.19620.218500.027250.05450.0820.1090.13630.16350.19080.21800.24530.2725600.03270.06540.09810.1310.16350.19620.22890.26160.29430.327700.038150.07630.1150.1530.19080.22890.26710.30520.34340.3815800

17、.04360.08720.1310.1750.2180.26160.30520.34880.39240.436900.049050.09810.14720.0.24530.29430.34340.39240.44150.4905"Q(yh)Lh (102030405060708090100100.00820.01640.02450.03270.04090.04910.05720.06540.07360.0817200.01640.03270.04910.06540.08170.09810.11440.13080.14700.1634300.02450.04910.07360.0981

18、0.12260.14810.17160.19610.22060.2451400.03270.06540.09810.13080.16340.19610.22880.26150.29420.3268500.04090.08170.12260.16340.20430.24510.2860.32680.36770.4085600.04910.09810.14710.19610.24510.29420.34320.39220.44120.4902700.05720.11440.17160.22880.2860.34320.40040.45760.51470.5719800.06540.13080.19

19、610.26150.32680.39220.45760.52290.58830.6536900.07360.14710.22060.29420.36770.44120.51470.58830.66180.7353"Q(yh)Lh (102030405060708090100100.01090.02180.03270.04360.05450.06540.07630.08720.09810.1089200.02180.04260.06540.08710.10890.13070.15250.17430.19610.2178300.03270.06540.09810.13070.16340.

20、19610.22870.26140.29410.3267400.04360.08720.13070.17430.21780.26140.30500.34850.39210.4356500.05450.10890.16340.21780.27230.32670.38120.43560.49010.5445600.06540.13070.19610.26140.32670.39210.45740.52280.58810.6534700.07630.15250.22870.30500.38120.45740.53370.6100.68610.7623800.08720.17430.26140.348

21、50.43560.52280.60990.69700.78410.8712900.09810.19610.29410.39210.49010.58810.68610.78410.88210.9801""Q(t/h)H (10203040506070809010010.02730.05460.08190.10920.13650.16380.19110.21840.24570.27320.05460.10920.16380.21840.27300.32760.38220.43680.49140.54630.08190.16380.24570.32760.40950.49140.

22、57330.65520.73710.81940.10920.21840.32760.43680.5460.65520.76440.87360.98281.09250.13650.2730.40950.5460.68250.8190.95551.0921.22851.36560.16380.32760.49140.65520.8190.98281.14661.31041.47421.63870.19110.38220.57330.76440.95551.14661.33771.52881.71991.91180.21840.43680.65520.87361.0921.31041.52881.7

23、4721.96562.18490.24570.49140.73710.98281.22851.47421.71991.96562.21132.457帶寬B （ mm）500650800100012001400刀N4(kw/)卸料器0.3 n0.4 n0.5 n1.0 n導(dǎo)料槽0.08L0.08L0.09L0.1L0.12L0.18L附加功率系數(shù)k3值表表10m)15304560100150200300> 300B 00'2.82.11.81.61.551.51.41.31.2601.71.41.31.251.251.21.21.151.151201.451.251.251.21.2