受矿坑充水影响工作面防隔水煤柱留设分析

Retention of Waterproof Coal Pillars in Working Faces Affected by Pit Water Filling

利用数学模型对山西沁和能源集团九鑫煤业有限公司矿坑充水情况进行模拟分析,预测矿坑充水量,确定防隔水煤柱留设宽度。根据矿坑面积及断层实际情况,在矿坑内沿已控制的地质断层上盘边界线上设置防隔水煤柱点位,通过点位连接确定防隔水煤柱边界线,以此完成防隔水煤柱设计。为验证设计的有效性,进行对比实验,证明了设计方案矿坑工作面导水量小于传统设计方案矿坑工作面导水量。

The mathematical model was used to simulate and analyze the water filling situation of the mine pit of Jiuxin Coal Industry Co.,Ltd.of Qinhe Energy Group of Shanxi,in order to predict the water filling volume of the mine pit,and determine the reserved width of the waterproof coal pillars.Based on the area of the mine pit and the actual situation of the fault,waterproof coal pillars points were set along the boundary line of the controlled geological fault hanging wall inside the mine pit,and the boundary line of the waterproof coal pillars was determined through point connection,in order to complete the design of the waterproof coal pillars.In order to verify the effectiveness of the design,comparative experiments were conducted to prove that the water conduction volume of the mining faces in the design scheme was smaller than that in the traditional design scheme.