不同采煤方法对冲击地压影响的研究  

Study on Influence of Different Mning Methods on Rockburst

作　　者：张当俊[1] 靳钟铭[1] 康天合[1] 

机构地区：[1]太原理工大学采矿工艺研究所

出　　处：《太原理工大学学报》2006年第6期676-679,共4页Journal of Taiyuan University of Technology

基　　金：山西省自然科学基金资助项目(20021059)

摘　　要：根据两种采煤方法在大同矿区忻州窑煤矿两个盘区产生冲击地压程度不同的事实,通过现场观测、数值模拟和对工作面前方支承压力分布的理论分析,以及裂隙分布的分形统计,归纳出放顶煤开采使支承压力峰值降低、分布范围扩大、顶煤裂隙发育的规律,阐明放顶煤开采使冲击地压强度减弱的机理,得出放顶煤开采可有效减少冲击地压发生的结论。According to the fact that two different kinds of mining methods give rise to the different degrees of rockburst in two panels of Xinzhouyao mine in Da Tong , through the observation on the spot, numerical simulation and theoretical analysis of supporting stress on frontage of coalface, and fractal statistics of distribution of cranny, a law is concluded that peak value of supporting stress plays clown and region of distribution of supporting stress extends, cranny of top coal develops. At the same time the mechanism is illustrated that top coal caving weakens strength of rockburst, and the conclusion can be obtained that top coal caving can reduce effectively the happening of rockburst.

关 键 词：冲击地压 采煤方法 支承压力 裂隙 分维 

分 类 号：TD324[矿业工程—矿井建设]