华阳二矿主采煤层瓦斯赋存特征分析  

Analysis of Gas Occurrence Characteristics of Main Mining Coal Seams in No.2 Mine of Huayang

作　　者：杨德方 陈绍杰[2] YANG Defang;CHEN Shaojie(School of Emergency Management and Safety Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China;School of Safety Engineering,North China Institute of Science and Technology,Sanhe 065201,China)

机构地区：[1]中国矿业大学(北京)应急管理与安全工程学院,北京100083 [2]华北科技学院安全工程学院,河北三河065201

出　　处：《煤炭技术》2023年第11期172-174,共3页Coal Technology

基　　金：国家自然科学基金项目(52174181)。

摘　　要：以华阳二矿瓦斯压力和瓦斯含量随着深度的增加而减少为工程背景,从盖层性质及组合特征分析瓦斯运移规律,提出盖层岩性及组合特征是控制煤层间瓦斯垂向运移难易程度的主控因素。结果表明:8#煤层瓦斯含量高于3#煤层和15#煤层;3#煤层瓦斯压力高于8#和15#煤层,出现了逆瓦斯梯度的现象,也是煤与瓦斯突出多发生3#煤层的主要原因,预测结果也得到了生产实践验证。The gas pressure and gas content decrease with the increase of depth as the engineering background,taking No.2 mine of Huayang coal mining group as an example.The gas migration law is analyzed from the properties and assemblage characteristics of cap strata,it is pointed out that the lithology and combination characteristics of the cap are the main controlling factors for the difficulty of vertical gas migration between coal seams.The results show that:the gas content of No.8 coal seam is higher than that of No.3 coal seam and No.15 coal seam;the gas pressure of No.3 coal seam is higher than that of No.8 and No.15 coal seam,the phenomenon of inverse gas gradient law appears,it is also the main reason for the occurrence of coal and gas outburst in No.3 coal seam,the predicted results have also been verified by production practice.

关 键 词：垂向运移 主控因素 逆瓦斯梯度 华阳二矿 

分 类 号：TD712[矿业工程—矿井通风与安全]