尾巷对采空区瓦斯流场影响的数值模拟  

Numerical Simulation of Influence of Tailing Way upon Gas Flow Field in Gob

作　　者：董钢锋[1,2,3] 邹银辉[2,3] 王振[2,3] 冀超辉[2,3] 周灿凯 

机构地区：[1]安徽理工大学,安徽淮南232001 [2]瓦斯灾害监控与应急技术国家重点实验室,重庆400037 [3]中煤科工集团重庆研究院,重庆400037

出　　处：《矿业安全与环保》2012年第5期19-21,25,共4页Mining Safety & Environmental Protection

基　　金：国家科技重大专项资助项目(2011ZX05040-004);国家重大基础研究发展计划(973计划)项目(2005CB221504);国家自然科学基金青年基金项目(50904034)

摘　　要：以数值模拟为主要手段,结合现场实际,分析了尾巷对五虎山煤矿1201工作面采空区瓦斯流场的影响,结果表明:尾巷对工作面采空区瓦斯流场的影响主要体现在上隅角附近,能有效地降低上隅角瓦斯浓度;尾巷对工作面采空区瓦斯流场的影响主要集中在采空区回风侧,且距离底板越远,尾巷在水平方向的影响面积越小;1201工作面瓦斯涌出大部分来自上邻近层,涌出的瓦斯易积聚在采空区上部,尾巷对工作面及采空区瓦斯流场的影响区域有限;高位钻孔终孔布置在其上覆岩层中,尾巷对1201工作面高位钻孔的抽放基本不产生影响。研究结果为接续无尾巷工作面的瓦斯治理工作提供了依据。Analysis was carried out on the influence of the tailing way upon gas flow field in the gob of 1201 working face in Wuhushan Mine by means of numerical simulation and according to the actual conditions at the site,the results showed that the influence of the tailing way upon the gas flow field in the gob was mainly embodied at the place near the upper corner,and it can effectively reduce the gas concentration in the upper corner;the influence of the tailing way upon the gas flow field in the gob was mainly concentrated at the air-return side of the gob,the farther the distance from the tailing way to the floor,the smaller the influence area of the tailing way in the horizontal direction;the gas emission in 1201 working face mostly came from the upper adjacent seam,the emitted gas easily accumulated in the upper of the gob,and there was a limited influence area of the tailing way upon the gas flow field in the working face and gob;the high-level boreholes were arranged in the overburden rock,the tailing way did not basically produce any influence on the gas drainage from the high-level boreholes in 1201 working face.This research result provided basis for gas control of the working face without tailing way.

关 键 词：数值模拟 尾巷 瓦斯流场 高位钻孔 

分 类 号：TD712[矿业工程—矿井通风与安全]