远程卸压瓦斯抽采特征与采动裂隙演化的数值模拟  

Numerical Simulation of Remote Pressure-released Gas Drainage Characteristics and Mining-induced Fracture Evolution

作　　者：刘红旗[1] 刘建庄[1,2] 李建民[2] 耿清友 马宁[1] 李智[1] LIU Hongqi;LIU Jianzhuang;LI Jianmin;GENG Qingyou;MA Ning;LI Zhi(Hebei Key Laboratory of Mining Development and Safety Technology, North China University of Science and Technology,Tangshan 063009, China;Kailuan Mining ( Group) Co. , Ltd. , Tangshan 063009, China)

机构地区：[1]华北理工大学河北省矿业开发与安全技术重点实验室,河北唐山063009 [2]开滦(集团)有限责任公司,河北唐山063009

出　　处：《矿业安全与环保》2016年第6期16-20,共5页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(51374089);河北省高校科学研究项目(Z2003144);华北理工大学研究生创新项目(2016S19)

摘　　要：为了解远程卸压开采中的瓦斯抽采特征及裂隙演化过程,以朱集矿首采工作面综合抽采为例,对比分析了各措施抽采参数变化规律。研究结果表明:留巷埋管和地面钻井抽采瓦斯浓度较高,穿层钻孔因顶板运动可能造成钻孔错断,尚不能准确实现远程定点抽采,各孔瓦斯抽采纯量和浓度差异较大,在钻孔布位和维护方面仍有较大的优化空间。运用UDEC软件模拟了采动裂隙的演化进程,模拟结果与瓦斯抽采参数的监测结果和来压规律较为吻合,可辅助查明留巷内穿层钻孔的损毁原因。In this paper, comparative analysis was carried out on the change rule of gas drainage parameters of everymeasures by taking the gas drainage in the first fully mechanized face in Zhuzhuang Mine as the example in order to understandthe characteristics of gas drainage and the evolution process of the mining-induced fractures during the remote pressure-reliefmining. The research results indicated that the gas drainage by bur^^ing pipes and surface well was more effective than that bycrossing holes, because the crossing holes might be staggered or broken due to the roof movement, the remote fixed-point gasdrainage can not be accurately achieved, the gas drainage flow and concentration of each hole were quite different, and there wasa larger optimization space in the aspect of hole layout and maintenance. UDEC software was used to simulate the evolutionprocess of the mining-induced fractures, the simulated results relatively accorded with the monitoring data of gas drainage andthe weighting rule, so it can assist to find out the damage cause of the crossing hole in the roadway.

关 键 词：远程卸压开采 采动裂隙 瓦斯治理 钻孔抽采 地面钻井抽采 UDEC 

分 类 号：TD712.6[矿业工程—矿井通风与安全]