平煤十一矿瓦斯分布东西分异的动力学机制  

The dynamic mechanism of east and west differentiation of gas distribution in Pingdingshan No.11 coal mine

作　　者：刘见宝[1,2,3] 宋志敏 任建刚[1,2] 曲艳伟[1,2] LIU Jianbao;SONG Zhimin;REN Jiangang;QU Yanwei(College of Environment and Bioengineering,Henan University of Engineering,Zhengzhou 451191,China;Engineering Research Center of Soil Pollution Detection and Controlling in Coal Producing Area of Henan Province,Zhengzhou 451191,China;Institute of Resources&Environment,Henan Polytechnic University,Jiaozuo 454000,China)

机构地区：[1]河南工程学院环境与生物工程学院,河南郑州451191 [2]煤产地土壤污染检测与治理河南省工程研究中心,河南郑州451191 [3]河南理工大学资源环境学院,河南焦作454000

出　　处：《河南工程学院学报（自然科学版）》2021年第4期19-25,共7页Journal of Henan University of Engineering：Natural Science Edition

基　　金：国家自然科学基金(41872169,41972177);中国博士后科学基金(2018M642747);河南省博士后科研项目(001803030);河南省高等学校重点科研项目(20A170006)。

摘　　要：通过构造分析、数值模拟、理论计算等手段,研究了平煤十一矿煤层瓦斯分布的动力学机制。以中央NE向雁列式断层为界,十一矿瓦斯分布存在东西分异的现象,瓦斯含量和瓦斯压力东部高、西部低。十一矿东部受锅底山断层左行走滑拖拽,表现为挤压应力场,形成了一系列NW向逆断层;西部受锅底山断层同沉积作用影响,表现为拉张应力场,形成了数量众多的小型正断层。东、西部不同的应力场性质,形成了NE向雁列式断层,作为矿井瓦斯地质单元的天然分割线,造成了矿井东、西部不同的瓦斯地质规律。By means of structural analysis,numerical simulation and theoretical calculation,the dynamic mechanism of controlling coal seam gas distribution in Pingding shan No.11 coal mine is studied.Taking the central NE trending an echelon fault as the boundary,the gas distribution in Pingdingshan No.11 coal mine is different from east to west,and the gas content and pressure are high in the east and low in the west.Influenced by the left strike slip of Guodishan fault,the eastern part of Pingdingshan No.11 coal mine shows compressive stress field and forms a series of NW trending reverse faults;the western part shows tensile stress field and forms a large number of small normal faults under the influence of syndeposition of Guodishan fault.Different stress fields in the east and west of the mine result in NE trending an echelon faults,which act as the natural dividing line of the mine gas geological unit,resulting in different gas geological laws in the east and west of the mine.

关 键 词：瓦斯分布 东西分异 雁列式断层 动力学机制 

分 类 号：P624.6[天文地球—地质矿产勘探]