四川煤矿极薄煤层提高瓦斯抽采效果关键技术研究  

Research on Key Technology for Improving Gas Drainage Effect from Very Thin Seams in Coal Mines in Sichuan Province

作　　者：刘生龙[1] 

机构地区：[1]四川省安全生产监督管理局(四川煤矿安全监察局)安全技术中心,四川成都610045

出　　处：《矿业安全与环保》2011年第5期62-64,67,共4页Mining Safety & Environmental Protection

基　　金：四川省安全科技项目(2007-10;2008-22)

摘　　要：针对四川煤矿开采极薄煤层,矿井绝对瓦斯涌出量小于15.0 m3/min,能否抽采瓦斯的问题,选择了有代表性的5对煤矿,开展了煤层瓦斯基础参数的测定工作,系统地测定了四川须家河组煤层瓦斯压力和相关参数。根据各矿特点,进行了多种抽采瓦斯技术试验,得到抽采极薄煤层瓦斯的最佳范围,形成了高位顶板钻孔和底板钻孔的抽采技术,解决了以卸压瓦斯涌出为主的极薄煤层抽采瓦斯技术难题。To counter the problem of very thin seam mining and whether gas can be extracted and drained from such seams with the absolute gas outflow less than 15.0m3/min in coal mines in Sichuan Province,five typical mines were selected for the measurement of basic gas parameters,and systematic measurement was carried out on the gas pressure and relevant parameters of seams in Sichuan Xujiahe formation.Test on several gas extraction and drainage technologies was made according to the features of each mine,the optimum range for gas extraction and drainage from very thin seams was obtained,and the gas extraction and drainage technology by high-located roof holes and floor holes was formed,all of these solved the technical problem of gas extraction and drainage from very thin coal seams with releasing gas emission.

关 键 词：极薄煤层 抽采瓦斯 顶(底)板穿层钻孔 卸压瓦斯 

分 类 号：TD355[矿业工程—矿井建设]