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针对急倾斜煤层底板巷道受采动影响破坏严重的现象,运用数值试验方法,对煤层开采引起的顶底板岩体的应力和位移分布规律进行了研究。结果表明,采动影响区域内的岩体可划分为垮落带、剪切屈服带、卸压带和整体滑移带,明显呈区域性分布;底板巷道应布置在受采动影响最小的相对稳定带中,且与煤层底板保持一定的安全距离。研究结果对于同类地质和开采条件的矿区具有重要参考价值。
Aiming at the phenomenon that the roadway of steep coal seam floor is seriously damaged by mining, the stress and displacement distribution rules of roof and floor rock mass caused by coal mining are studied by numerical test method. The results show that the rock masses in the mining affected area can be divided into caving zone, shear yield zone, pressure relief zone and the whole slip zone, showing a regional distribution obviously. The bottom roadway should be arranged in the least affected by mining Stable belt, and the coal floor to maintain a certain safety distance. The research results have important reference value for the mining area of the same geological conditions and mining conditions.