房采采空区上方近距煤层反程序开采数值仿真  

Numerical Simulation of Upward Mining Coal Seam Near over Gob Left by Room and Pillar Mining

作　　者：顾铁凤[1] 

机构地区：[1]太原理工大学理学院工程力学系,山西太原030024

出　　处：《煤矿开采》2011年第1期32-35,107,共5页Coal Mining Technology

基　　金：国家科技支撑计划项目(2007BAD29B02);山西省科技攻关项目(200631118-02);山西省自然科学基金(200601047)联合资助

摘　　要：基于神东矿区寸草塔矿的近距煤层赋存条件,应用ANSYS仿真方法研究以往房采采空区上方的近距煤层反程序开采的可行性。其主要结论是:(1)下部2-2上煤房柱开采后,留设6m煤柱稳定,其顶板稳定未垮落;(2)2-1中煤层可用反程序长壁开采;(3)2-1中煤层长壁开采时,底板保持稳定;(4)2-1煤层开采时,地表最大下沉613mm,最大水平移动13.6mm。数值仿真研究成果证明,在2-2上房采煤柱采空区上方反程序开采2-1中煤层是安全可行的。ANSYS was applied to researching the feasibility of upward mining coal seam near over gob left by room and pillar mining based on coal-seam occurrence condition of Cuncaota Colliery in Shendong mining field.Main results were list as follows.（1） 6m coal pillar and its roof kept stable after lower 2-2-upper coal seam was mined by room and pillar mining method;（2） 2-1-middle coal seam might be mined by upward mining method;（3） floor of 2-1-middle coal seam kept stable by longwall mining method;（4） in 2-1-middle coal seam mining,maximum surface subsidence was 613mm,maximum horizontal movement was 13.6mm.The results showed that upward mining coal seam near over gob left by room and pillar mining was safe and feasible.

关 键 词：房采采空区 近距煤层 反程序开采 顶(底)板稳定性 数值仿真 

分 类 号：TD823.81[矿业工程—煤矿开采]