五沟煤矿10煤的开采受上覆含水层的制约,尤其是第四含水层严重威胁了矿井的安全开采。为了确定五沟煤矿四含水层下合理回采上限,在确保安全的前提下尽可能多的解放呆滞煤量,文章以1011工作面为例,通过理论计算和RFPA数值模拟相结合的研究方法对五沟煤矿合理回采上限进行分析。研究结果表明1011工作面煤层开采导水裂隙带高度为52.84m,最终确定工作面的合理回采上限为-300m。
A mining in No.10 seam of Wugou Mine is restricted by above No.4 aquifer and the aquifer is seriously threatening the safety mining of the mine.In order to determine the up-limit of the rational mining under the aquifer in the mine and on the premise of the safety ensured to liberate more dead coal quantity possibly,taking No.1011 coal mining face as a case,a study method with the theoretical calculation and RFPA numerical simulation was applied to analyze the up-limit of the rational coal mining in Wugou Mine.The study results showed that No.1011 coal mining in the seam caused the water flow crack zone with a height of 52.84m and the rational mining up-limit of the coal mining face in No.10 seam was finally set as-300m.