采动影响下煤层底板破坏特征试验研究
Experimental Study on Destruction Characteristics of Floor Strata Under Mining
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摘要: 针对上层煤采动条件下煤层底板破坏这一实际问题,采用数值模拟试验和相似材料试验的方法对工作面不同推进距离底板破坏特征进行研究,确定了采动条件下底板的破坏特征与工作面推进距离之间的关系,确定了近距离煤层下层煤开采回采巷道布置、支护及顶板管理方案。Abstract: For the problem of floor rock destruction under upper coal seam mining, the failure characteristics of floor under different advancing distance are studied by numerical simulation and similarity simulation, and the relationship between floor failure characteristics and advancing distance of coal face is determined. The results can be used as guidance for the options about arrangement, supporting and the plan of roof management of roadway in the mining of close coal seams.
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