摘要
根据小回沟煤矿8#和9#煤层特殊地质情况,对其上行开采可行性进行研究。通过采动影响系数法、三带判断法、围岩平衡法论证得出9#煤层采用房柱式开采后可以实现8#煤层蹬空开采。结合房柱式开采工艺理论要求及8#煤层长壁工作面向底板传递载荷计算分析合理设计9#煤层采留比,并运用FLAC3D数值模拟验证了理论分析的正确性。
According to the special geological conditions of Xiaohuigou coal mining of 8^#and 9^#coal seam to analysis on upward mining. Using the ratio judging method,3-zone discriminance, surrounding rock equilibrium method result that the 9^#coal seam with room and pillar mining method can be achieved after the8^#coal seam overhead mining. Combined with room and pillar mining technology theory and 8^#coal seam longwall face plate to transfer load calculation and analysis to the reasonable ratio of 9^#coal seam mining,using FLAC^3 Dnumerical simulation to verify the theoretical analysis is correct.
出处
《煤炭技术》
CAS
北大核心
2014年第10期147-150,共4页
Coal Technology
基金
山西省科技重大专项(20121101009-03)
关键词
上行开采
蹬空开采
房柱式
传递载荷
upward mining
overhead mining
room-and-pillar
transmitted load
