1、 成品砂的生产能力： Pr = PkrkZ （t/h）kS砾石加工（筛洗、转运）损耗系数；kr砂料加工（筛洗、转运、流失）损耗系数；kZ砂石料成品储存系数；确定天然砂砾石毛料开采总量 V00K实体开挖总量： V = （万m3） A0（1K1）（K2）（K3）V0砂或砾石控制粒径的需要量；（万m3）0砂或砾石控制粒径的容重；毛料的天然容重；一般砂取1.5 t/m3，砾石取1.6t/ m3K 级配变化系数；常取1.1A0砂或砾石控制粒径的天然含量；K1开采损耗系数；水下开采：砂取0.35，砾石取0.05；水上开采：砂取0.15，砾石取0.03；K2运输、堆存损耗系数；常取0.1K3筛分加工损耗系数
2、；砂取0.15，砾石取0.03确定砂砾石料堆料场容量1、确定砂砾石料成品堆料场容量；根据混凝土高峰期最高月浇筑强度，砂料脱水温控要求确定：砂石料成品料场容积：VZ=QHAK2/3K1 （万m3）QH混凝土最高月浇筑强度；（万m3/月）A 1 m3混凝土所需的砂石料；一般为1.5m3砂石料K2级配变化系数；1.11.5K1 活库容与总库容之比；依地形情况选择，平地0.552、确定砂砾石毛料堆场容积毛料堆场容积：V毛=（Q1Q2）nK （万m3）Q1毛料持续开采高峰月平均强度；Q2相应的月筛分强度；n 持续生产月数；K 毛料储存系数；（1.11.2）3、考虑受汛期的影响，按下式进行堆料场容积的效核
3、计算； VS+Vm VZ + QS B AKZVS 汛期毛料开采量；Vm 毛料堆场储存量；V Z 成品砂石料堆场总量（活容积）；B 每1 m3混凝土所需的毛料量；A 每1 m3混凝土所需的成品砂石料；KZ 级配变化系数；QS 汛期混凝土浇筑总量；胶带机功率计算一、 传动滚筒轴功率计算：1、传动滚筒轴功率计算：N0=（N1+N2+N3）k3k4+N4 （kw）N0传动滚筒轴功率；（kw）N1输送带及托辊转动部分运转功率；根据带宽B（mm）带速V（m/s）、胶带机水平长度Lh（m）查表（表1表4）N2物料水平运输功率（kw）；根据胶带机输送量Q（t/h）、胶带机水平长度Lh（m）查表（表5表7）
4、N3物料垂直提升功率（kw）；Q（t/h）、物料提升高度H（m）查表（表8） N4卸料器及导料槽附加功率：（根据带宽B值、卸料器个数n值、导料槽长度L值查表9确定） （kw）k3附加功率系数；（根据胶带机水平长度Lh值和倾角值查表10选定）k4卸料功率系数：光面滚筒取1.16，胶面滚筒取1.11；2、电动机功率计算：电动机功率：N=KN0/K功率备用系数，一般取1.4；总传动效率：光面滚筒取0.88，胶面滚筒取0.9；胶带机极限倾角干砂15； 湿砂27； 湿砾石22；筛过的干砾石18；碎石和未筛过的砾石20； B=500mm转动部分运转功率N1值表 表1 （kw） V （m/s） Lh （m）
5、清洁、干燥少量尘埃、正常湿度大量尘埃、湿度大1.01.251.62.0100.0670.0840.1070.1340.100.1250.160.200.1680.2140.268200.2500.320.400.3360.4280.536300.2010.2510.3220.4020.300.3750.480.600.5040.6420.804400.3350.4290.500.640.800.6720.8561.072500.4190.6700.6251.000.841.0701.34600.5030.6430.750.961.201.0081.2841.608700.4690.5860.7
6、510.9380.700.8751.121.401.1761.4981.8876800.8581.0621.281.601.3441.7122.144900.6030.7540.9651.2060.901.1251.441.801.5121.9262.412 B=650mm转动部分运转功率N1值表 表2 （kw）0.0820.1030.1310.1640.1240.1550.1980.2480.1650.2060.2640.3300.2050.2620.3280.3100.3970.4960.4130.5280.6600.2460.3080.3940.4920.3720.4650.5950.7
7、440.4950.6190.7920.9900.4100.5250.6560.6200.7940.9920.8251.0561.320.5130.8200.7751.2401.0311.3201.650.6150.7870.9840.9301.1901.4881.2381.5841.980.5740.7180.9181.1480.8681.0851.3891.7361.1551.4441.8482.311.0501.3121.241.5871.9841.6502.1122.640.7380.9231.1811.4761.1161.3951.7862.2321.4851.8562.3762.97
8、 B=800mm转动部分运转功率N1值表 表3 （kw）0.110.1380.1760.220.330.2750.3520.440.660.5500.7040.880.991.1001.4081.760.550.6880.8801.101.3751.7602.200.770.9631.2321.541.9252.4643.082.2002.8163.522.4753.1683.96 B=1000mm转动部分运转功率N1值表 表4 （kw）0.1530.1910.2450.3060.2290.2860.3660.4580.3830.4900.6120.5730.7330.9160.7650.98
9、01.2240.4590.7340.6870.8591.0991.3741.4691.8361.1451.4661.8321.5301.9582.4480.9561.4312.2901.531.9133.0601.7182.1982.7482.2952.9383.6721.0711.3391.7142.1421.6032.0042.5653.2062.6783.4274.2842.9313.6623.9174.8961.3771.7212.2032.7542.0612.5763.304.1223.4434.4065.508 清洁、干燥条件下物料水平运输功率N2值表 表5 （kw） Q （t/h
10、）Lh（m）1000.005450.01090.01640.0220.02750.03270.03820.04360.04910.05450.02180.0330.0440.06540.07630.08720.09810.1090.016350.0660.08180.11450.13080.14720.16350.0880.15260.17440.19620.2180.027250.13630.19080.21800.24530.27250.22890.26160.29430.3270.038150.1150.26710.30520.34340.38150.1750.34880.39240.4
11、360.049050.1970.44150.4905 少量尘埃、正常湿度条件下物料水平运输功率N2值表 表6 （kw）0.00820.02450.04090.05720.07360.08170.11440.14700.16340.12260.14810.17160.19610.22060.24510.22880.26150.29420.32680.20430.36770.40850.14710.34320.39220.44120.49020.40040.45760.51470.57190.52290.58830.65360.66180.7353 大量尘埃、湿度大条件下物料水平运输功率N2值表
12、表7 （kw）0.10890.04260.08710.13070.15250.17430.21780.22870.26140.29410.32670.30500.34850.39210.43560.27230.38120.49010.54450.45740.52280.58810.65340.53370.6100.68610.76230.60990.69700.78410.87120.88210.9801 物料垂直提升运输功率N3值表 表8 （kw） Q（t/h）H（m）10.02730.05460.08190.10920.13650.16380.19110.21840.24570.27320
13、.27300.32760.38220.43680.49140.54630.40950.57330.65520.73710.81940.76440.87360.98281.09250.68250.95551.22851.36561.14661.31041.47421.63871.33771.52881.71991.91181.74721.96562.18492.21132.457 卸料器及导料槽附加功率N4值表 表9 （kw）带宽B（mm）500650800100012001400N4卸料器0.3n0.4n0.5n1.0n导料槽0.08L0.09L0.1L0.12L0.18L 附加功率系数k3值表 表10 Lh（m） 1545150200300300002.82.11.81.551.51.41.31.21.71.151201.451.141.131.1
