水力压裂技术在成庄煤矿低透气性突出煤层的应用及效果  

Application and Effect of Hydraulic Fracturing Technology in Low Permeability Outburst Coal Seam in Chengzhuang Coal Mine

作　　者：孟小红 MENG Xiaohong(CCTEG Chongqing Research Institute,Chongqing 400039,China)

机构地区：[1]中煤科工集团重庆研究院有限公司

出　　处：《矿业安全与环保》2019年第4期95-97,共3页Mining Safety & Environmental Protection

基　　金：天地科技股份有限公司科技创新创业资金专项项目(2018-TD-QN062)

摘　　要：为了解决成庄煤矿高瓦斯含量、低透气性煤层在开采过程中遇到的瓦斯难以抽采的问题,在该煤矿进行了水力压裂现场试验并优化钻孔布置,定量分析水力压裂的影响范围及效果。结果表明:采用水力压裂技术后的煤层透气性系数提高了26.3倍、煤层内瓦斯压力降低了53.5%,消除了煤与瓦斯突出的潜在危险,同时瓦斯抽采纯流量及其抽采浓度也有了大幅度的提高。通过优化钻孔布置,有效降低了成庄煤矿的瓦斯治理成本。In order to overcome the difficulty in gas extraction in the mining process of the coal seam with high gas content and low permeability in Chengzhuang Coal Mine,the field test of hydraulic fracturing was carried out in this mine,and the layout of boreholes was optimized.The influence range and effect of hydraulic fracturing were quantitatively analyzed.The results show that after adopting hydraulic fracturing technology,the permeability coefficient of coal seam has been increased by 26.3 times,and the gas pressure in coal seam has been reduced by 53.5%,the potential danger of coal and gas outburst was eliminated,meanwhile,the pure flow rate and concentration of gas extraction have been greatly increased.By optimizing the drilling arrangement,the gas control cost of Chengzhuang Coal Mine is effectively reduced.

关 键 词：低透气性煤层 瓦斯抽采 煤与瓦斯突出 水力压裂 优化布置 

分 类 号：TD712[矿业工程—矿井通风与安全]