高瓦斯煤层群保护层开采卸压效果数值模拟  

Study on numerical simulation of pressure relief effect of protective seam mining in high gas coal seams

作　　者：肖同强[1] 李允生 顾树生 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]山东能源临矿集团田庄煤矿,山东兖州272103

出　　处：《河南理工大学学报（自然科学版）》2013年第5期527-530,共4页Journal of Henan Polytechnic University（Natural Science）

基　　金：河南省教育厅科学技术研究重点项目(13A440322);河南理工大学博士基金资助项目(B2012-081)

摘　　要：为合理选择保护层,针对高瓦斯突出煤层群安全开采问题,分析了保护层开采的保护作用机理,即保护层开采可对被保护层起到卸压增透作用,改善被保护层的瓦斯抽放效果是解决煤与瓦斯突出问题及瓦斯灾害的重要技术手段;卸压对煤与瓦斯突出及瓦斯问题的解决具有决定作用.针对某矿高瓦斯突出煤层群生产地质条件,采用FLAC3D数值软件模拟2个非突出煤层作为保护层开采时的卸压效果,并对其进行了分析比较,研究结果可为保护层的合理选择提供参考依据.In order to select a proper protective seam,firstly,in view of safety mining of high gas coal seams,the protective mechanism of protective seam mining was analyzed.Protective seam mining has pressure relief and a permeability-increasing function to a protected seam,and it can improve gas the drainage effect of a protected seam effectively.Thusly,protective seam mining is an important technique to solve gas disaster problems in high gas coal seams.Pressure relief is the key to solve the coal and gas outburst problems.In view of safe mining in high gas coal seams in a mine,the pressure relief effect of two protective seams mining was studied through FLAC3Dnumerical simulation method,and analysis and comparison have carried out.The results can provide a basis for the reasonable selection of a protective seam.

关 键 词：高瓦斯 煤层群 保护层开采 卸压效果 

分 类 号：TD821[矿业工程—煤矿开采]