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1、瓦斯管路流量计算表中梁山煤电气有限公司矿业分公司北矿通风队使用说明：1.本表根据水力学公式推出井下瓦斯管路流量公式为： 按此公式计算出混合瓦斯流量。2.将测得的管路动压（公厘水柱）和瓦斯浓度值于表内查找出相应的混合瓦斯流量，再乘以瓦斯浓度，即得纯瓦斯量，m3/min。3.本表适合目前井下抽放情况，若个别从表中查不到相应的数据时，则可用上述公式在附表中查相应混合瓦斯容重r代入公式，即可计算出混合流量。我矿瓦斯管主要巷道平均流速值（用中心点测法）测定地点动压范围ReN平均流速m/min钻场0.100.50160006.90.814Vmax0.501.001090007.30.832Vmax各异支管
2、1.003.00899306.90.81443.007.001421907.40.8252泵站10.82313.005.001107707.90.83485.107.002336448.10.83841985.11.1不同管径断面积 附表2管径寸2寸4寸6寸8寸12寸毫米50100150200300断面积米20.0020.0080.0180.0320.071不同沼气浓度与空气混合气体的容重r值（在20和760mmHg时）（单位：公斤/米3） 附表1沼气浓度%112345678901.205001.199631.194261.188891.183251.178151.172781.167411.
3、162041.15667101.151301.145931.140561.135191.124821.24451.119081.114011.108341.10297201.097601.092231.086861.081491.076121.070751.065381.060011.054641.04927301.043901.038531.0331610.27791.022421.017051.011681.006311.000940.99557400.990200.984830.979460.974090.968720.963350.957980.952610.947240.941875
4、00.93650.931130.925760.920390.915020.909650.904280.898910.893540.88817600.882800.871430.872060.866690.861320.855950.850580.845210.839840.83447700.829100.823730.818360.812990.807620.802250.796880.791510.786140.78077800.775400.770030.764660.759290.753910.748550.743180.737810.732440.72707900.721700.716
5、330.710960.705590.700220.694850.743180.737810.737810.732441000.66800r=1.205-0.537*CH4%2寸管混合瓦斯流量表浓度% 流 量 m3/min动压mmHg20-2525-3030-3535-4040-4545-5050-5555-6060-6565-7070-7575-8080-8585-900.01-0.050.0820.0830.0840.0850.0860.0870.0880.0900.0910.0930.0940.0960.0980.0990.05-0.100.1420.1420.1440.1470.1490
6、.1510.1540.1560.1580.1610.1630.1660.1690.1720.10-0.150.1830.1830.1850.1900.1930.1950.1990.2010.2040.2070.2110.2140.2180.2220.15-0.200.2160.2160.2190.2250.2280.2310.2350.2380.2420.2450.2490.2540.2580.2630.20-0.250.2450.2450.2490.2550.2590.2620.2670.2700.2740.2780.2830.2880.2930.2980.25-0.300.2710.271
7、0.2750.2820.2860.2900.2950.2980.3030.3080.3100.3180.3240.3290.30-0.350.2950.2950.2990.3070.3110.3150.3200.3240.3290.3350.3400.3460.3520.3580.35-0.400.3170.3170.3210.3290.3340.3380.3440.3480.3540.3590.3650.3710.3780.3850.40-0.450.3370.3370.3420.3510.3550.3600.3660.3710.3770.3830.3890.3950.4020.4090.4
8、5-0.500.3570.3570.3610.3710.3760.3810.3870.3920.3980.4040.4110.4180.4250.4330.50-0.550.3750.3870.3850.3900.3950.4010.1070.4120.4190.4250.4320.4390.4470.4550.55-0.600.3920.3970.4020.4080.4130.4190.4260.4310.4390.4450.4520.4600.4680.4760.60-0.650.4090.4140.4200.4250.4310.4370.4440.4500.4570.4640.4710.
9、4790.7880.4970.65-0.700.4250.4310.4360.4420.4480.4540.4620.4680.4750.4820.4900.4980.5070.5350.70-0.7504420.4460.4520.4580.4640.4710.4790.4850.4920.5000.5080.5160.5250.5350.75-0.800.4560.4610.4670.4730.4750.4870.4950.5010.5090.5170.5250.5340.5430.5530.80-0.850.4700.4760.4820.4880.4950.5020.5110.5170.
10、5250.5330.5420.5510.5600.5700.85-0.900.4840.4900.4960.5030.5100.5170.5260.5320.5400.5490.5570.5670.5770.5880.90-0.950.4980.5040.5100.5170.5240.5320.5410.5470.5560.5640.5740.5830.5930.6040.95-0.100.5110.5170.5240.5310.5380.5460.5550.5620.5700.5790.5890.5990.6090.6191.00-1.050.5240.5310.5370.5440.5520
11、.5600.5690.5670.5850.5940.6040.6140.6250.6361.05-1.100.5370.5430.5500.5580.5650.5730.5830.5900.5990.6080.6180.6290.6400.6511.10-1.150.5490.5660.5630.5700.5780.5860.5960.6040.6130.6220.6330.6430.6540.6661.15-1.200.5610.5680.5750.5830.5910.5990.6090.6190.6260.6360.6460.6570.6690.6811.20-1.250.5730.5800.5870.5950.6030.6120.6220.6300.6390.6500.6600.6710.6830.6951.25-1.300.5840.5920.5990.6070.6160.6240.6350.6430.6520.6630.6730.6850.6970.7091.30-1.350.2970.6030.6110.6190.6270.6360.6470.6550.6650.6750.6860.6980.7100.7231.35-1.40
