矿井瓦斯单元划分及其应用  

Mine Gas Unit Division and Application

作　　者：何鑫 崔洪庆[1,2,3] 何峰 王泽华 HE Xin;CUI Hongqing;HE Feng;WANG Zehua(College of Safety Science and Engineering Henan Polytechnic University,Jiaozuo,Henan 454000;Key Laboratory of Gas Geology and Gas Control in Henan Province,Jiaozuo,Henan 454000;Co-innovation Center of Coal Seam(Shale)Gas in Central Plains Economic Zone,Jiaozuo,Henan 454000;Henan Energy Group Dazhong Coal Mine,Anyang,Henan 454000)

机构地区：[1]河南理工大学安全科学与工程学院,河南焦作454000 [2]河南省瓦斯地质与瓦斯治理重点实验室,河南焦作454000 [3]中原经济区煤层(页岩)气协同创新中心,河南焦作454000 [4]河南能源集团大众煤矿,河南安阳455000

出　　处：《中国煤炭地质》2023年第11期10-17,9,共9页Coal Geology of China

基　　金：国家自然科学基金项目“高突煤层长壁回采工作面四维瓦斯地质研究”(41372160)。

摘　　要：为了使瓦斯灾害防治工作因地制宜,须在煤矿生产中对地下空间进行区域划分。在分析目前我国煤矿区域划分的方法及存在问题的基础上,提出了以采区瓦斯单元为基本单元开展瓦斯治理工程的设想。基于煤层瓦斯赋存、突出危险性和地质构造三者之间的紧密联系,提出了依据地质构造及其组合类型相同、煤层变质程度及煤体特征相近、瓦斯逸散条件相似等原则划分瓦斯单元的方法。研究表明,根据瓦斯地质区划论与主导因素分析法圈定的区域能准确地反应该单元瓦斯赋存特征,即不同单元中煤体宏观裂隙发育特征、煤层渗透性及瓦斯优势渗流方向等方面均呈现不同规律。河南古汉山矿瓦斯抽采工程实践表明,该区划方法不仅能使煤与瓦斯突出危险性预测工作有的放矢,且能够实现瓦斯抽采的优化设计,是一种合理有效的瓦斯治理技术途径。In order to make gas disaster prevention and control suitable to local conditions,underground space should be divided into different regions in coal mining area.The method and existing problems of zoning of coal mines in our country are analyzed,and the idea of gas management based on gas unit in mining area is put forward.Based on the close relationship between coal seam gas occurrence,outburst hazard and geological structure,a method is proposed to divide gas unit in mining area according to the same type of geological structure and its combination,similar degree of coal seam metamorphism,similar characteristics of coal body and similar gas dissipation conditions.The results show that the area delineated by gas geological zoning theory and dominant factor analysis can accurately reflect the gas occurrence characteristics in different units,that is to say,the macrofracture development characteristics,coal seam permeability and gas dominant seepage direction all show different laws in different units.The practice of gas extraction project in Guhan Mountain mine in Henan shows that the zoning method can not only target the prediction of coal and gas outburst hazard,but also realize the optimal design of gas extraction,and is a reasonable and effective way of gas treatment technology.

关 键 词：瓦斯灾害防治 地质构造 地质单元 瓦斯单元 瓦斯抽采 

分 类 号：TD713[矿业工程—矿井通风与安全]