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中文摘要：
准确掌握采空区孔隙率分布规律,对研究采空区瓦斯分布规律及指导采空区卸压瓦斯抽采等具有重要的意义。以平煤六矿戊8-22310综采面为例,利用UDEC软件建立了物理模型,模拟了采动覆岩结构移动变形破坏情况,得到了上覆岩层下沉量分布,研究了综采面采空区孔隙率的分布规律。研究表明,综采面采空区孔隙率大致呈＂簸箕＂状分布,工作面附近孔隙率较大,深部孔隙率较小;中间孔隙率较小,两帮孔隙率较大。研究成果为准确研究采空区瓦斯运移及分布规律提供了基础数据。
英文摘要：
It is significant to accurately grasp the goaf porosity distribution and study gas distribution law and guide the pres-sure relief gas extraction in goaf .Wu8 -22310 fully mechanized work face of Pingdingshan Coal Group No .6 coal mine is taken as an example in this paper .The physical model is constructed in UDEC software ,the deformation damage of overly-ing strata is simulated , the distribution of strata subsidence is obtained and also the porosity distribution in goaf of fully mechanized face is researched .Research shows that：the porosity distribution in goaf of fully mechanized face is shaped ap-proximately a‘dustpan’ .The porosity is large near the working face ,air intake and return and low in deep and middle of goaf .The research could provide basis data for accurate study on gas migration and distribution in goaf .
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