特厚老顶工作面高位钻孔参数优化设计  

The Parameters Optimization Design of High Level Borehole for Extra Thick Old Top Coal Mining Face

作　　者：张云峰[1,2] 胡依鲁[2] 

机构地区：[1]徐州赛孚瑞科高分子材料有限公司,江苏徐州221008 [2]中国矿业大学安全工程学院,江苏徐州22116

出　　处：《煤矿安全》2013年第3期136-138,共3页Safety in Coal Mines

摘　　要：金能煤业分公司4321综采工作面瓦斯涌出量大,且瓦斯来源主要是采空区。针对煤层顶板复杂特性及高位钻孔抽放效果不佳问题,利用ABAQUS数值模拟软件研究了顶板岩层裂隙发育特性。模拟结果显示:裂隙高度发育区位于距风巷水平距离18～24 m、顶板上方20 m处,依此对高位钻孔的抽放参数进行了优化设计。The gas emission is large in No. 4321 fully mechanized coal mining face in Jinneng Mine, and the gas emission sources are mainly from the goaf. Aiming at the the problems of roof＇s complex nature and poor drainage effect of high level borehole, the character- istics of roof rock crack is researched by using the numerical simulation software - ABAQUS. Simulation result shows that rational fis- sure development zone is located in the place from air gate horizontal distance 18 - 24 m and above roof 20 m. So, drainage parame- ters of high level borehole is designed and optimized on account of this result.

关 键 词：瓦斯涌出 采空区 高位钻孔 数值模拟 瓦斯抽放 特厚老顶 

分 类 号：TD712[矿业工程—矿井通风与安全]