液态CO_(2)驱替技术的煤层瓦斯防治应用研究  

Application of Liquid CO_(2)Displacement Technology for Coal Seam Gas Prevention and Control

作　　者：张兴润 ZHANG Xingrun(Yuwu Coal Industry Co.,Ltd.,Shanxi Lu′an Group,Changzhi 046000,China)

机构地区：[1]山西省潞安集团余吾煤业有限责任公司,山西长治046000

出　　处：《煤炭技术》2025年第4期194-197,共4页Coal Technology

摘　　要：为提高低渗煤层瓦斯抽采效率,以余吾煤矿3^(#)高瓦斯煤层S2207工作面为研究对象,展开注液态CO_(2)驱替煤层瓦斯现场工业性试验,研究了分次压注液态CO_(2)对CO_(2)影响半径及瓦斯抽采效果的影响。现场试验结果表明:煤层分次压注液态CO_(2),能够使16 m范围内煤体孔裂隙充分发育,且注气置换作用效果显著,注液态CO_(2)驱替技术能够有效降低煤层瓦斯。In order to improve the efficiency of gas extraction in low permeability coal seam,a field industrial test of liquid CO_(2)injection was carried out on the S2207 working face of the No.3 high gas coal seam in Yuwu coal mine,and the influence of fractional pressure injection of liquid CO_(2)on CO_(2)influence radius and gas extraction effect was studied.The field test results show that:the fractional pressure injection of liquid CO_(2)in coal seam can fully develop the coal hole cracks within the range of 16 m,and the gas injection displacement effect is significant,and the liquid CO_(2)injection displacement technology can effectively reduce the coal seam gas.

关 键 词：高瓦斯煤层 液态CO_(2) 瓦斯抽采 驱替技术 

分 类 号：TD712[矿业工程—矿井通风与安全]