阿艾矿区煤层瓦斯赋存规律及其主控因素  

Occurrence Law and Main Controlling Factors of Coal Seam Gas in A′ai Mining Area

作　　者：李文 LI Wen(China Coal Technology and Engineering Group Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《煤炭技术》2023年第11期157-161,共5页Coal Technology

摘　　要：为实现新疆阿艾矿区瓦斯高效治理,利用实验测试、数理统计、现场测试、理论分析等方法对矿区瓦斯赋存规律及其主控因素开展研究,研究结果表明:矿区比尤勒包谷孜背斜单元瓦斯含量普遍在8 m3/t以上,夏阔坦向斜单元瓦斯含量分布在4~8 m3/t,捷斯德里克向斜单元瓦斯含量分布在0~3 m3/t。比尤勒包谷孜背斜单元瓦斯含量主要受控于高煤化作用阶段导致的良好瓦斯生成条件、强烈构造挤压超低渗效应导致的煤层良好保存条件。夏阔坦向斜单元瓦斯含量主要受控于较高煤化作用阶段导致的较好瓦斯生成条件,高惰质组含量、高吸附能力、高孔隙度导致的煤层良好储气能力。捷斯德里克向斜单元低瓦斯含量主要受控于低煤化作用阶段导致的较差瓦斯生成条件,低惰质组含量、低吸附能力导致的煤层较差储集能力,浅埋深、高透气性导致的煤层较差保存条件。In order to realize the accurate and efficient control of gas in Xinjiang A′ai mining area,uses experimental testing,mathematical statistics,field testing,theoretical analysis and other methods to study the law of gas occurrence in the mining area,and studies the main controlling factors of gas occurrence.The research results show that:the gas content in the Biyoulebaoguzi anticline unit is generally above 8 m3/t.The gas content in the Xiakuotan syncline unit is 4-8 m3/t.The gas content in the Jiesidelike syncline unit ranges from 0 to 3 m3/t.The gas content of Biyoulebaoguzi anticline unit is mainly controlled by the good gas generation condition caused by high coalification stage and the good coal seam preservation condition caused by the strong tectonic extrusion ultra-low permeability effect.The gas content of the Xiakuotan syncline unit is mainly controlled by the better gas generation conditions caused by the higher stage of coalification.The good gas storage capacity of the coal seam caused by the high inertinite content,high adsorption capacity and high porosity.The low gas content of the Jiesidelike syncline unit is mainly controlled by the poor gas generation conditions caused by the low coalification stage,the poor storage capacity of the coal seam caused by the low inertinite content and low adsorption capacity,and the poor preservation conditions of the coal seam caused by the shallow burial depth and high permeability.

关 键 词：阿艾矿区 煤层瓦斯 煤化作用 煤岩组分 煤层透气性 

分 类 号：TD712[矿业工程—矿井通风与安全]