顶板走向钻孔抽放采空区瓦斯数值模拟与分析  

Numerical Simulation and Analysis of Methane Drainage from Goaf by Drills along Roof Strike

作　　者：邓明[1,2] 张国枢[1] 秦汝祥[1] 

机构地区：[1]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南市232001 [2]阜阳师范学院计算机与信息学院,安徽阜阳市236041

出　　处：《矿业研究与开发》2008年第5期20-22,66,共4页Mining Research and Development

基　　金：安徽自然科学基金项目(050450404);安徽省高校科技创新团队计划项目(2006KJ005TD)

摘　　要：针对"U"型通风工作面采空区上隅角容易积聚瓦斯,以渗流理论为基础,根据气体扩散定律和质量守恒定律,建立了顶板走向钻孔抽放采空区瓦斯流场模型。在Visual-Basic6.0平台上,利用工程软件SURFER模拟了抽放钻孔周围瓦斯压力场。结果表明,煤体自身所具备的条件和抽放瓦斯的技术条件是影响瓦斯抽放量的主要因素,采取诸多因素相结合的切实可行方案,顶板走向钻孔抽放采空区瓦斯可以取得良好的效果,在技术上是可行的。In order to solve the problems of methane accumulation at upper comer angle in coal mining faces of which ventilation system is U - type, based on seepage theory, the law of gas diffusion and the law of mass conservation, a flow field model for methane drainage from mined -out area by borehole along the roof strike was established. And the methane pressure field around drainage boreholes was simulated by SUFER based on Visual Basic6. 0. The results of the simulation indicated that the conditions of coal seam and the technical conditions of methane drainage are the main factors infecting drainage volume. By taking operable and practicable scheme, the methane drainage by borehole along the roof strike can result in good effect of drainage, and is feasible in technology.

关 键 词：采空区 瓦斯抽放 顶板走向钻孔 数值模拟 

分 类 号：TD823.82[矿业工程—煤矿开采]