砂石系統(tǒng)生產(chǎn)能力的確定

精品一、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。、月工作天數(shù)：一般為25

天。、日工作班數(shù)：2

班或

3

班作業(yè)。、日工作小時：由日工作班數(shù)和各部位生產(chǎn)情況確定。、半成品加工時間：要求超徑石處理、予篩分、粗碎、中碎的時間一致。3

班作業(yè)為

小時；2

班作業(yè)為

11～14

小時。、成品篩洗時間：3

班作業(yè)為

20

小時；2

班作業(yè)為

小時。、人工制砂時間：要求3

班

24

小時作業(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度、混凝土級配、各種粒徑的需要量以及生產(chǎn)加工損耗等因素進行綜合考慮確定。按以下公式計算：系統(tǒng)總生產(chǎn)能力：P

= (t/h)精品M

——月工作天數(shù)；常取25

天N

——日工作小時數(shù)；按工作制度選定。2、系統(tǒng)毛料處理能力：P

=

P/η (t/h)η

=｛k·k·k

·k）〕｝η

kkkkβ

——毛料的含砂率。3、成品礫石（碎石）生產(chǎn)能力：P=

P（1－β

）k·k (t/h)成品砂的生產(chǎn)能力： P=

P·β

(t/h)式中：k——礫石加工（篩洗、轉(zhuǎn)運）損耗系數(shù)；k——砂料加工（篩洗、轉(zhuǎn)運、流失）損耗系數(shù)；k——砂石料成品儲存系數(shù)；式中：V——砂或礫石控制粒徑的需要量；式中：V——砂或礫石控制粒徑的需要量；

萬

m）V·γ

實體開挖總量： V

= （萬

m）A·γ

）（－K）（－K）（γ

——砂或礫石控制粒徑的容重；γ

1.5

t/m

1.6t/

mK

——級配變化系數(shù)；常取1.1A——砂或礫石控制粒徑的天然含量；K——開采損耗系數(shù)；水下開采：砂取0.35，礫石取

0.05；水上開采：砂取

0.15，礫石取

0.03；K——運輸、堆存損耗系數(shù)；常取0.1K——篩分加工損耗系數(shù)；砂取0.15，礫石取

0.03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度，砂料脫水溫控要求確定：式中：Q——毛料持續(xù)開采高峰月平均強度；

萬

m式中：Q——毛料持續(xù)開采高峰月平均強度；

萬

m/月）Q——相應(yīng)的月篩分強度；

萬

m/月）式中：V

——汛期毛料開采量；

萬

m）V

——成品砂石料堆場總量（活容積）（萬

m）Q

——汛期混凝土澆筑總量；

萬

m）2、確定砂礫石毛料堆場容積毛料堆場容積：V

=（Q－Q）n·K （萬

m）（（n

——持續(xù)生產(chǎn)月數(shù)；K

——毛料儲存系數(shù)；（1.1～1.2）3、考慮受汛期的影響，按下式進行堆料場容積的效核計算；V+V V+ ＞QB A·K（V

——

m）；B

m混凝土所需的毛料量；A

m混凝土所需的成品砂石料；K

（∑

N∑

N——卸料器及導料槽附加功率：

根據(jù)帶寬

B

值、k——附加功率系數(shù)；

根據(jù)膠帶機水平長度

L值和傾角B(mm)帶速

V(m/s)、膠帶機水平長度

L(m)查表（表

1～表

4）NQ(t/h)、膠帶機水平長度

L(m)查表（表

5～表

7）NQ(t/h)、物料提升高度

H(m)查表（表

8）（卸料器個數(shù)

n

值、導料槽長度

L

值查表

9

確定）

（kw）（β

值查表

10

選定）k

1.11；2、電動機功率計算：電動機功率：N=K·N/η式中：K——功率備用系數(shù)，一般取1.4；N——傳動滾筒軸功率；（kw）η

——總傳動效率：光面滾筒取0.88，膠面滾筒取

0.9；精品

表1 （kw）V

清潔、干燥

少量塵埃、正常濕度

大量塵埃、濕度大0.200.260.33L0.200.260.33

102030405060

1.00.060.134180.40

1.250.0840.1680.2510.3350.4190.503

1.60.1070.2140.3220.4290.5360.643

2.00.1340.2680.4020.5360.6700.804

1.00.100.200.300.400.500.60

1.250.1250.2500.3750.500.6250.75

1.60.160.320.480.640.800.96

2.00.200.400.600.801.001.20

1.00.1340.2680.4020.5360.6700.804

1.250.1680.3360.5040.6720.841.008

1.60.2140.4280.6420.8561.0701.284

2.00.2680.5360.8041.0721.341.6080.46700.46

2

0.586

0.751

0.938

0.70

0.875

1.12

1.40

0.938

1.176

1.498

1.88760.53800.5390

90.60

0.6700.754

0.8580.965

1.0621.206

0.800.90

1.001.125

1.281.44

1.601.80

1.0621.206

1.3441.512

1.7121.926

2.1442.412welcome精品

表2 （kw）V

清潔、干燥

少量塵埃、正常濕度

大量塵埃、濕度大0.240.320.410.570.65L0.240.320.410.570.65

102030405060708090

1.00.080.164680.49240.73

1.250.1030.2050.3080.4100.5130.6150.7180.8200.923

1.60.1310.2620.3940.5250.6560.7870.9181.0501.181

2.00.1640.3280.4920.6560.8200.9841.1481.3121.476

1.00.1240.2480.3720.4960.6200.7440.8680.9921.116

1.250.1550.3100.4650.6200.7750.9301.0851.241.395

1.60.1980.3970.5950.7940.9921.1901.3891.5871.786

2.00.2480.4960.7440.9921.2401.4881.7361.9842.232

1.00.1650.3300.4950.6600.8250.9901.1551.3201.485

1.250.2060.4130.6190.8251.0311.2381.4441.6501.856

1.60.2640.5280.7921.0561.3201.5841.8482.1122.376

2.00.3300.6600.9901.321.651.982.312.642.97welcome精品

表3 V

清潔、干燥

少量塵埃、正常濕度

大量塵埃、濕度大L

102030405060708090

1.00.110.220.330.440.550.660.770.880.99

1.250.1380.2750.4130.5500.6880.8250.9631.1001.238

1.60.1760.3520.5280.7040.8801.0561.2321.4081.584

2.00.220.440.660.881.101.321.541.761.98

1.00.1650.3300.4950.6600.8250.9901.1551.3201.485

1.250.2060.4130.6190.8251.0311.2381.4441.6501.856

1.60.2640.5280.7921.0561.3201.5841.8482.1122.376

2.00.330.660.991.321.651.982.312.642.97

1.00.220.440.660.881.101.321.541.761.98

1.250.2750.5500.8251.1001.3751.6501.9252.2002.475

1.60.3520.7041.0561.4081.7602.1122.4642.8163.168

2.00.440.881.321.762.202.643.083.523.96welcome精品

表4 （kw）V

清潔、干燥

少量塵埃、正常濕度

大量塵埃、濕度大0.450.610.761.071.22L0.450.610.761.071.22

102030405060708090

1.00.150.306920.91811.37

1.250.1910.3830.5740.7650.9561.1481.3391.5301.721

1.60.2450.4900.7340.9801.2241.4691.7141.9582.203

2.00.3060.6120.9181.2241.5301.8362.1422.4482.754

1.00.2290.4580.6870.9161.1451.3741.6031.8322.061

1.250.2860.5730.8591.1451.4311.7182.0042.2902.576

1.60.3660.7331.0991.4661.8322.1982.5652.9313.30

2.00.4580.9161.3741.8322.2902.7483.2063.6624.122

1.00.3060.6120.9181.2241.531.8362.1422.4482.754

1.250.3830.7651.1481.5301.9132.2952.6783.0603.443

1.60.4900.9801.4691.9582.4482.9383.4273.9174.406

2.00.6121.2241.8362.4483.0603.6724.2844.8965.508welcome精品

表5 Q102030405060708090

100.005450.01090.016350.02180.027250.03270.038150.04360.04905

200.01090.02180.03270.04360.05450.06540.07630.08720.0981

300.01640.0330.04910.0660.0820.09810.1150.1310.1472

400.0220.0440.0660.0880.1090.1310.1530.1750.197

500.02750.05450.08180.1090.13630.16350.19080.2180.2453

600.03270.06540.09810.13080.16350.19620.22890.26160.2943

700.03820.07630.11450.15260.19080.22890.26710.30520.3434

800.04360.08720.13080.17440.21800.26160.30520.34880.3924

900.04910.09810.14720.19620.24530.29430.34340.39240.4415

1000.05450.1090.16350.2180.27250.3270.38150.4360.4905welcome精品

表6 （kw）10Q102030405060708090

100.00820.01640.02450.03270.04090.04910.05720.06540.0736

200.01640.03270.04910.06540.08170.09810.11440.13080.1471

300.02450.04910.07360.09810.12260.14710.17160.19610.2206

400.03270.06540.09810.13080.16340.19610.22880.26150.2942

500.04090.08170.12260.16340.20430.24510.2860.32680.3677

600.04910.09810.14810.19610.24510.29420.34320.39220.4412

700.05720.11440.17160.22880.2860.34320.40040.45760.5147

800.06540.13080.19610.26150.32680.39220.45760.52290.5883

900.07360.14700.22060.29420.36770.44120.51470.58830.6618

1000.08170.16340.24510.32680.40850.49020.57190.65360.7353welcome精品

表7 （kw）10Q102030405060708090

100.01090.02180.03270.04360.05450.06540.07630.08720.0981

200.02180.04260.06540.08720.10890.13070.15250.17430.1961

300.03270.06540.09810.13070.16340.19610.22870.26140.2941

400.04360.08710.13070.17430.21780.26140.30500.34850.3921

500.05450.10890.16340.21780.27230.32670.38120.43560.4901

600.06540.13070.19610.26140.32670.39210.45740.52280.5881

700.07630.15250.22870.30500.38120.45740.53370.60990.6861

800.08720.17430.26140.34850.43560.52280.6100.69700.7841

900.09810.19610.29410.39210.49010.58810.68610.78410.8821

1000.10890.21780.32670.43560.54450.65340.76230.87120.9801welcome精品

表8 （kw）Q

123456789

100.02730.05460.08190.10920.13650.16380.19110.21840.2457

200.05460.10920.16380.21840.2730.32760.38220.43680.4914

300.08190.16380.24570.32760.40950.49140.57330.65520.7371

400.10920.21840.32760.43680.5460.65520.76440.87360.9828

500.13650.27300.40950.5460.68250.8190.95551.0921.2285

600.16380.32760.49140.65520.8190.98281.14661.31041.4742

700.19110.38220.57330.76440.95551.14661.33771.52881.7199

800.21840.43680.65520.87361.0921.31041.52881.74721.9656

900.24570.49140.73710.98281.22851.47421.71991.96562.2113

1000.2730.5460.8191.0921.3651.6381.9112.1842.457welcome

表

9

（kw）帶寬

B（mm）∑