采场上覆3层厚硬岩浆岩破断规律

Broken Rules of Three Layer Thick-hard Magmatic Rocks on Stope

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。

By analyzing the geological condition of Yangliu coal mine 1061 working face, finding that the thick-hard magmatic rocks on the stope are prone to impending in a large area, thus inducing some dynamic hazards like rock burst and support dynamic load which seriously affect the safe-mining. This thesis takes three sets of states in magmatic rocks＇ thickness and distance on the stope, simulates the broken location of magmatic rocks through theoretical calculation and UDEC and analyzes broken rules of the three layer thick-hard magmatic rocks on the stope to make 1061 working face mime coal safely and smoothly.