基于震源机制的煤矿采动主应力场反演分析  

Inversion Analysis of Principal Stress Field of Coal Mining Based on Focus Mechanism

作　　者：李守锋 屈英[1] LI Shoufeng;QU Ying(Huating Coal Mine,Huating Coal Industry Group,Huating 744100,China)

机构地区：[1]华亭煤业集团华亭煤矿,甘肃华亭744100

出　　处：《矿业安全与环保》2018年第3期90-93,共4页Mining Safety & Environmental Protection

摘　　要：矿井岩体应力场属性是冲击地压防治需考虑的重要因素,而开采扰动可使原岩应力场变异,故在掌握原岩应力场属性的同时,应用震源机制解答方法,以华亭煤矿250104工作面回采、250105工作面掘进时55个强度较高、震相清晰的矿震为基础,对矿井采动应力释放规律进行反演,分析了矿井采动应力场及其演化过程,进而反映受采动影响矿井应力场的调整和再平衡过程,并通过与现场地应力测量结果比较,认清矿井冲击地压发生机理,采取针对性较强的冲击地压防治措施,有效减轻了矿井冲击地压灾害。The property of stress field of mine rock mass is an important factor which should be considered for prevention and control of rock burst.The mining disturbance can make the original rock stress field vary.Therefore,in mastering the property of the original rock stress field,the solution method of focus mechanism was applied,based on 55 strong mining shocks with relatively high intensity and clear seismic phase,which produced in the mining of 250104 working face and tunneling of 250105 working face in Huating Coal Mine,the stress release rule of mine mining was reversed,the mine mining stress field and its evolution process was analyzed.Furthermore,it reflected the adjustment and rebalancing process of mining stress field affected by mining,and by comparing with the results of site stress measurement,the mechanism of rock burst in mine was understand. The targeted measures to prevent and control the impact of rock burst were adopted,which effectively reduced the impact of rock burst in coal mine.

关 键 词：应力场 矿震 震源机制 反演 冲击地压 

分 类 号：TD324[矿业工程—矿井建设]