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分析杨柳煤矿1061工作面地质条件,采场上覆厚硬岩浆岩容易发生大面积悬空,从而诱发冲击地压和支架动载等动力灾害,严重影响了安全开采。对采场上覆3层岩浆岩的厚度和距离选取3组数据,通过理论计算和UDEC数值模拟判断岩浆岩的破断位置,分析采场上覆3层厚硬岩浆岩的破断规律,实现1061工作面开采的安全顺利进行。
The geological conditions of the face of 1061 in Yangliu Coal Mine are analyzed. It is easy for a large area of dilapidation to occur in the overlying thick and hard magmatic rocks in the stope, thus inducing dynamic disasters such as rock burst and stent dynamic load, which seriously affect the safe mining. Three sets of data are selected for the thickness and distance of overlying strata of magmatic rocks in the stope, and the fracture location of magmatic rocks is judged by theoretical calculation and UDEC numerical simulation. The breaking rules of overlying three-layer hard rock are analyzed to realize the work of 1061 Safety of surface mining proceeded smoothly.