四川省煤层瓦斯赋存分布规律  

Gas Occurrence and Distribution of Coal Seam in Sichuan Province

作　　者：熊建龙[1,2] 贾天让 赵文峰[1,6] 闫江伟 XIONG Jianlong;JIA Tianrang;ZHAO Wenfeng;YAN Jiangwei(Sichuan Institute of Coalfield Geological Engineering Exploration and Designing,Chengdu 610072,China;Sichuan Provincial Coal Mine Gas(Coalbed Methane)Engineering Research Center,Chengdu 610072,China;State Key Laboratory Cultivation Base for Gas Geology and Gas Control(Henan Polytechnic University),Jiaozuo 454003,China;Institute of Gas Geology,Henan Polytechnic University,Jiaozuo 454003,China;Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region,Henan Province,Jiaozuo 454003,China;Sichuan Nengtou Oil and Gas Exploration and Development Co.,Ltd.,Chengdu 610095,China)

机构地区：[1]四川省煤田地质工程勘察设计研究院,成都610072 [2]四川省煤矿瓦斯(煤层气)工程研究中心,成都610072 [3]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(河南理工大学),河南焦作454003 [4]河南理工大学瓦斯地质研究所,河南焦作454003 [5]中原经济区煤层(页岩)气河南省协同创新中心,河南焦作454003 [6]四川省能投油气勘探开发有限公司,成都610095

出　　处：《煤炭技术》2023年第1期143-146,共4页Coal Technology

基　　金：河南省科技攻关(202102310221;202102310619);中国工程科技发展战略河南研究院战略咨询研究项目(2020HENZDB02)。

摘　　要：搞清煤层瓦斯赋存规律是做好瓦斯灾害防治和生产规划的前提和基础。应用瓦斯地质的研究方法,结合四川省煤矿瓦斯地质图编制资料,探讨了四川省煤层瓦斯赋存分布规律。研究结果表明:四川省煤层瓦斯赋存具有明显的分区性,晚二叠世煤层瓦斯赋存明显高于晚三叠世煤层;叙永-筠连叠加褶皱带和华蓥山滑脱褶皱带晚二叠世煤层长期处于强烈的构造挤压中,构造煤发育,加之煤变质程度高,瓦斯含量高,是全省突出矿井主要集中在该区域的根本原因;芙蓉矿区位于叙永-筠连叠加褶皱带中段北部,主控构造珙长背斜是由多个次级背、向斜组成,且除其倾伏端发育的中型断层对煤层有一定破坏作用外,无切割煤系的区域性断层,有利于瓦斯保存,是造就该矿区成为四川省瓦斯灾害最严重的矿区的原因。Understanding the occurrence law of coal seam gas is the premise and foundation of gas disaster prevention and production planning.Basing on research methods of gas-geology,combining with datum of Sichuan province coal mine gas-geology map,the gas occurrence and distribution law of coal seam in Sichuan province was discussed.The results show that the gas occurrence and distribution in Sichuan province is obvious.Gas occurrence in the Late Permian coal seams is significantly higher than that in the Late Triassic coal seams.Late Permian coal seams in the Xuyong-Junlian superimposed fold belt and the Huayingshan detachment fold belt are high gas occurrence zones.These two zones have been under strong structural compression for a long time,tectonic coal stratified,which are the fundamental reasons why outburst mines in Sichuan province are mainly located in this region;Furong mining area locates in the middle north of Xuyong-Junlian superimposed fold belt.Its controlling structure is Gongchang anticline composed of multiple secondary anticlines and synclines,and there are no regional faults cutting coal measures,except that the medium-sized faults develop at its dip end have a certain destructive effect on the coal seam,which are in favor of gas preservation and the reasons why Furong mining area is the most serious gas disasters mining area in Sichuan province.

关 键 词：瓦斯赋存 构造控制 瓦斯地质规律 瓦斯分带 

分 类 号：TD712[矿业工程—矿井通风与安全]