云岗矿煤层顶板冒裂安全性分区研究

Study on safety zoning of coal seam roof crack in Yungang Mine

针对云岗矿开采过程中出现的顶板冒裂、导水层裂隙带发育等现象,以该矿410盘区51041工作面为研究对象,建立工作面的数值仿真模型,确定顶板冒裂安全性分区的标准。通过分析得出,井田的西一盘区和北二盘区是煤层顶板冒裂的危险区,煤层可能受含水层的威胁发生突水事故;井田南部比较安全,发生突水事故的可能性较小。

In view of the roof crack and fracture zone development in water conducting layer in the mining process of Yungang Mine,the numerical simulation model of 51041 working face in 410 panel of the mine is established to determine the standard of roof crack safety zoning.Through the analysis,it is concluded that the west first panel and north second panel of the mine field are the danger zone of coal seam roof crack,and the coal seam may be threatened by aquifer sudden water accident;the south of the mine field is relatively safe,and the possibility of sudden water accident is small.