红阳矿区12^#煤层及其顶板冲击倾向性试验研究  

Experiment study on bursting liability of 12^# coal and roof rock of Hongyang coal mine

作　　者：王炯[1,2] 崔家森 郝育喜[1,2] 张逸龙[3] 孟志刚[1,2] 王浩[1,2] 

机构地区：[1]深部岩土力学与地下工程国家重点实验室,北京100083 [2]中国矿业大学(北京)力学与建筑工程学院,北京100083 [3]黑龙江科技大学矿业工程学院,黑龙江哈尔滨150022

出　　处：《中国矿业》2016年第5期70-73,101,共5页China Mining Magazine

基　　金：国家自然科学基金项目资助(编号:51404278;51479195);中央高校基本科研业务费专项基金项目资助(编号:2011QL07)

摘　　要：冲击地压是煤矿深部开采面临的最主要动力灾害之一,红阳矿区主采的12#煤层开采深度已接近1000m,冲击动力灾害愈发严重。为了解冲击动力学灾害发生的机理,依据煤层及顶板岩层冲击倾向性分类及指数的测定方法和标准,通过室内岩石力学试验得出煤样的单轴抗压强度为6.51MPa、冲击能量指数为1.93、弹性能量指数为3.11、动态破坏时间为252ms,煤层顶板弯曲能量指数为101.922kJ,综合判定12#煤层及其顶板均具有弱冲击倾向性。以上述研究结果为基础,结合红阳矿区12#煤层的实际生产条件,为该煤层深部开采延伸工程中的冲击地压预测及防治提供参考依据。Rockburst is a facing one of the most natural disasters in deep mining; the main mining of 12~ coal seam of Hongyang coal mine, which the depth has been closed to 1000 meters at present. The dynamic disaster phenomena are most serious. In order to understand the principle of dynamic phenomena, according to the classification of coal seam and roof rock impact proneness and index determinative methods and standards. Through the laboratory rock mechanics experiment results show that uniaxial compressive strength of coal seam, impact energy index, elastic energy index, dynamic destructive time and bending energy index of roof is 6.51 MPa, 1.93,3.11,252 milliseconds, 101. 922kj respectively, which indicate the 12~ coal seam and roof rock have both weak bursting proneness. Using the above test results and in combination with the practical production conditions of the 12＂ coal seam,the production process should be strengthened the prediction work of rock burst to ensure the safety of mine production.

关 键 词：红阳矿区 冲击倾向性 单轴抗压强度 冲击能量指数 弹性能量指数 动态破坏时间 

分 类 号：TD324[矿业工程—矿井建设]