煤矿深部煤层水力压裂增透效果研究  

Permeability Enhancement Effect of Hydraulic Fracturing in Deep Coal Seam of Coal Mine

作　　者：翟勇 ZHAI Yong(Yangquan Xinyu Geotechnical Engineering Co.,Ltd.,Yangquan 045000,Shanxi,China)

机构地区：[1]阳泉新宇岩土工程有限责任公司,山西阳泉045000

出　　处：《能源与节能》2025年第3期288-291,317,共5页Energy and Energy Conservation

摘　　要：以山西省阳泉市市区西部新景矿为试验工点,基于现场原位试验,选取深部高瓦斯低透气性煤层(15号煤层)为研究对象,从抽采效果、压裂影响范围、瓦斯含量多方面对深部煤层水力压裂增透效果进行了探讨。结果表明:水力压裂能有效提升瓦斯抽采效率,瓦斯抽采体积分数、流量、纯流量经压裂试验后分别提升了2.05、1.96、10.65倍;水力压裂影响范围为10~20 m,渗透速度及方向受煤层水平倾角及试验巷道倾角影响;经水力压裂后,煤层瓦斯含量从11.63m^(3)/t降到5.49m^(3)/t,降低了52.79%。Taking Xinjing Mine in the west of Yangquan City,Shanxi Province as the research site,based on the in-situ test,the deep coal seam with high gas and low permeability(No.15 coal seam)was selected as the research object,and the permeability enhancement effect of hydraulic fracturing in deep coal seam was discussed from the aspects of extraction effect,fracturing influence range and gas content.The results showed that hydraulic fracturing can effectively improve gas extraction efficiency,and the volume fraction of gas extraction,gas extraction flow rate and net flow rate were respectively increased by 2.05,1.96 and 10.65 times after fracturing test;the influence range of hydraulic fracturing was 10-20 m,and the permeability velocity and direction were affected by the horizontal dip angle of coal seam and the dip angle of test roadway;after hydraulic fracturing,the gas content of coal seam decreased from 11.63 m^(3)/t to 5.49 m^(3)/t,which decreased by 52.79%.

关 键 词：水力压裂 深部煤层 瓦斯抽采 增透效果 

分 类 号：TD712.6[矿业工程—矿井通风与安全]