中文摘要：

针对突出矿井底抽巷合理位置的布置问题,结合豫西某矿首采工作面地质条件,采用FLAC3D对8种回采巷道与底抽巷相对位置的设计方案进行数值模拟,对比分析各布置方式条件下巷道围岩应力分布规律及巷道变形特征,综合经济因素及现场操作情况确定最优设计方案。结果表明：回采巷道与底抽巷垂距为5.8 m、垂距为10 m平距分别为10 m和15 m的设计方案均能满足巷道稳定性和支护要求,但从经济效益方面考虑垂距平距均为10 m的设计方案最优;经实践验证,回采巷道与底抽巷垂距和平距均为10 m的设计方案顶底板和两帮移近量可满足安全生产要求,抽采后残存瓦斯含量控制在3.3-5.8 m3/t,防突效果明显。此设计方案的成功运用,不仅可以指导该煤矿的安全、高效生产,而且也可为具有类似地质条件矿井的底抽巷布置提供借鉴和参考。

英文摘要：

To work out the reasonable position of floor drainage lane in outburst mines,eight designing positions combined with the geological conditions of a coal mining working face in west Henan are numerically simulated by means of FLAC3 D. Besides the roadway surrounding rock stress distribution and deformation characteristics from numerical simulation,economic factors and operating situation on site are also considered,the optimal design scheme is determined. It is revealed by the results that the three position that are vertical distance5. 8 m,vertical distance 10 m,and horizontal distance 10 m and 15 m respectively can all meet the requirements of roadway stability. However considerations economy,the best position is both the vertical and horizontal distance 10 m between roadway and bottom lane. The practice shows that the best position can meet the requirements of safety production,and the gas concentration after drainage is in the scope from 3. 3 m3/ t to 5. 8m3/ t,which is effective to reduce the gas outburst. The results can not only guide the coal safety and efficient production,but also provide a reference for similar geological coal mines.