天安煤矿5404工作面带压开采安全性综合评价研究

Study on comprehensive safety evaluation of 5404 working face with pressure in tianan coal mine

山西阳煤集团天安煤矿5#煤层开采受到底板奥灰水的威胁,为准确掌握5404工作面带压开采的安全性,通过现场勘察、数值模拟及理论分析计算等方法,研究分析回采动压和底板承压水压力联合作用下煤层底板岩层的塑性破坏深度,得知工作面回采期间底板破坏深度为15m,通过井下水文孔探查得知底板隔水层的厚度及岩性,分析计算结果表明底板隔水性能较好,采用突水系数法计算结果表明,天安煤矿5#煤层5404工作面能够进行安全带压开采。

Shanxi YangMei tianan coal mine group 5 # coal seam mining under the threat of floor Mr Grey water,for the security of accurate grasp of under pressure mining of 5404 working face,through the field survey and methods of numerical simulation and theoretical analysis and calculation,analysis of dynamic pressure and bottom pressure under the joint action of water pressure plastic failure depth of coal floor strata,learned that during the mining face plate damage depth of 15 m,by underground hydrological hole probe that floor water-resisting layer thickness and lithology,analysis and calculation results show that the bottom water performance is good,the water inrush coefficient method to calculate the results showed that the tianan coal mine 5 # 5404 on to mining of coal seam.