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中文摘要：
在分析煤层水力压裂增透机理的基础上，根据五阳煤矿地质条件，经现场试验确定出适合五阳煤矿的水力压裂工艺及压裂参数。水力压裂后，在增透影响半径内煤层瓦斯平均抽采浓度和平均抽采纯流量较原始抽采增大2．3倍和2．6倍，煤层平均含水率增大1．78倍。通过综合测定钻孔瓦斯抽采纯流量、抽采浓度和煤层含水率得到水力压裂增透影响半径为20～25 m，压裂湿润煤体范围略大于压裂增透范围。
英文摘要：
Based on the analysis of permeability increasing mechanism by hydraulic fracturing of coal seams and inaccordance with the geologic conditions in Wuyang Coal Mine, the hydraulic fracturing technology and parameters suitable for coalseams in this mine were determined by site tests. After hydraulic fracturing, the average gas drainage concentration and theaverage pure gas drainage volume in the influence radius of permeability increase respectively increased by 2.3 and 2.6 times ascompared with the origins, and the average water content of the coal seam increased by 1.78 times. The permeability increasingradius was determined as 20 m to 25 m by measuring the pure gas drainage volume and concentration from borehotes and the watercontent of coal seams. The scope of the coal seam wetted by hydraulic fracturing was slightly larger than that of the permeabilityincreasing by hydraulic fracturing.
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