苏恒,曹运兴,陈莲芳
SU Heng,CAO Yunxing,CHEN Lianfang

• 1:河南理工大学安全科学与工程学院
• 2:河南省瓦斯地质与瓦斯治理重点实验室—省部共建国家重点实验室培育基地

摘要(Abstract)：

针对高瓦斯低渗煤层煤巷掘进工作面瓦斯抽采钻孔施工量大、抽采周期长、抽采效率低等问题,提出了气相压裂增透瓦斯治理技术,介绍了气相压裂设备及技术原理,确定了工作面压裂施工方案,并对气相压裂后的预抽效果进行了考察分析。结果显示:气相压裂孔较普通钻孔抽采量提高了4倍,压裂影响区域内的预抽孔抽采量提高了2.4倍。实践证明,气相压裂技术适用于矿井高瓦斯松软低渗煤层的瓦斯抽采。
Aimed at the problems such as large work volume, long extraction cycle and low gas drainage rate of holes for gas drainage in high-gas seam with low permeabilty in driving face of coal roadway, the paper presented gas phase permeability-enhancing fracturing technique, introduced the gas phase fracturing equipment and the technical principle, the scheme of fracturing operation in working face was determined, the pre-drainage effectiveness after gas phase fracturing was investigated and analyzed. The results show that the quantity of gas drainage of gas phase-fractured hole was four times more than that of ordinary hole, and the quantity of gas drainage of the pre-drainage hole increased by 2.4 times. The practice has proved that gas phase fracturing, as a technology and a technique for safe production in coal mine, is suitable for high gas and soft coal seam with low permeability. Gas phase fracturing has very important theoretical significance and wide application prospect.

关键词(KeyWords)： 气相压裂;瓦斯抽采;低渗煤层;透气性
gas phase fracturing;gas extraction;low permeability coal;permeability

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项课题(2011ZX05040-005)~~

作者(Author): 苏恒,曹运兴,陈莲芳
SU Heng,CAO Yunxing,CHEN Lianfang

参考文献(References)：

• [1]孙炳兴,王兆丰,伍厚荣.水力压裂增透技术在瓦斯抽采中的应用[J].煤炭科学技术,2010,38(11):78–80.SUN Bingxing,WANG Zhaofeng,WU Hourong.Hydraulic pressurized cracking and permeability improvement technology applied to gas drainage[J].Coal Science and Technology,2010,38(11):78–80.
• [2]顾德祥.低透气性突出煤层强化增透瓦斯抽采技术研究[D].淮南:安徽理工大学,2009.
• [3]董钢锋,林府进.高压水射流扩孔提高穿层钻孔预抽效果的试验[J].矿业安全与环保,2001,28(3):17–18.DONG Gangfeng,LIN Fujin.Test of improving gas predrainage effect from cross-seam holes by hole enlargement with water jet[J].Mining Safety&Environmental Protection,2001,28(3):17–18.
• [4]段康廉,冯增朝,赵阳升,等.低渗透煤层钻孔与水力割缝瓦斯排放的实验研究[J].煤炭学报,2002,27(1):50–53.DUAN Kanglian,FENG Zengchao,ZHAO Yangsheng,et al.Testing study of methane drainage by bore and hydraulic–cutting seam from low permeability coal seam[J].Journal of China Coal Society,2002,27(1):50–53.
• [5]马小涛,李智勇,屠洪盛,等.高瓦斯低透气性煤层深孔爆破增透技术[J].煤矿开采,2010,15(1):92–93.MA Xiaotao,LI Zhiyong,TU Hongsheng,et al.Technology of deep–hole blasting for magnifying permeability in coal seam with high methane–content and low permeability[J].Coal Mining Technology,2010,15(1):92–93.
• [6]李全贵,翟成,林柏泉,等.低透气性煤层水力压裂增透技术应用[J].煤炭工程,2012,44(1):31–33.LI Quangui,ZHAI Cheng,LIN Baiquan,et al.Application of hydraulic fracturing and permeability improvement technology to low permeability seam[J].Coal Engineering,2012,44(1):31–33.
• [7]周世宁,林柏泉.煤层瓦斯赋存与流动理论[M].北京:煤炭工业出版社,1999:205–208.

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