基于数值模拟的煤层瓦斯抽采半径合理化试验研究  

Experimental Study of Coal Seam Gas Drainage Radius Based on Numerical Simulation

作　　者：张嘉勇 陈建 周凤增[2] 张新双[2] 张金海[3] 李凤志[3] 

机构地区：[1]华北理工大学矿业工程学院,河北唐山063009 [2]开滦(集团)有限责任公司,河北唐山063000 [3]开滦(集团)有限责任公司钱家营矿业分公司,河北唐山063000

出　　处：《煤矿开采》2017年第3期121-124,共4页Coal Mining Technology

基　　金：国家自然基金资助项目(51374089)

摘　　要：针对井下煤与瓦斯的突出问题,在开滦钱家营矿进行了煤层瓦斯抽放半径测定的实验。运用压力指标法对5煤层的瓦斯抽放半径进行测定,结果表明5煤层的抽放半径大于1m;采用改进含量指标法现场测定了5煤层瓦斯的有效抽放半径,在3~4m范围内;采用RFPA2D-Gas Flow模拟软件对瓦斯在抽放过程中的渗流情况进行模拟,最终确定模拟有效半径为3.4m;通过数学分析最终确定抽放钻孔布置最佳间距为4.8m,测定结果为钱家营矿防突措施的开展提供关键数据和依据。To the problem of rockburst in deep, and experimental detection of coal seam gas drainage radius experimental was done inQianjiaying mine of Kailuan, and gas drainage radius of 5# coal seam was detected with pressure index method, the results showedthat the gas drainage radius of 5# coal seam more than 1m, and then an effective radius of 5# coal seam was field test with improvedcontent index method, it is between 3 ~ 4m, then seepage situation during drainage process was simulated with software RFPA2D-Gas-Flow, an effective radius was determined as 3. 4m, and the optimum spacing of drainage hole distribution was 4. 8m with mathematicsanalysis, it references for outburst prevention development of Qianjiaying coal mine.

关 键 词：含量指标法 矿井防突 抽放半径 数值分析 

分 类 号：TD712.6[矿业工程—矿井通风与安全]