论文部分内容阅读
为保证火区下煤层群开采的安全可行,对石圪节3#煤层火区下煤层群开采形成的裂隙发育高度进行了理论计算,得出了3#煤层开采对底板的破坏深度及下组煤开采形成的裂隙发育高度,并对裂隙的分布规律进行了分析。同时,利用UDEC软件对开采造成的裂隙发育规律进行了数值模拟,模拟结果与计算结果基本相符,得出8#与9#煤层开切眼及停采线各内错10m时,裂隙发育高度及贯通程度较小。
In order to ensure the safety of the mining of coal seams in the fire area, the height of fractures developed by coal seam grouping under the seam # 3 in Shijiejie section was theoretically calculated, and the destructive depth of the bottom plate in No.3 coal seam mining was obtained. The height of the fissure formed by mining is analyzed, and the distribution rule of the fissure is analyzed. At the same time, using UDEC software to simulate the development of fractures caused by mining, the simulation results are in good agreement with the calculated results. It is concluded that the fractured development height and Less through.