红阳矿区7^#煤层及顶板冲击倾向性试验研究  

Experiment Study on Burst Tendency of 7^# Coal Seam and Roof in Hongyang Coal Mine

作　　者：夏洪满[1,2,3] 王炯[2,3] 崔家森 张逸龙[4] 王兵[1] 宋景利 

机构地区：[1]沈阳焦煤股份有限公司,辽宁沈阳110122 [2]中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,北京100083 [3]中国矿业大学(北京)力学与建筑工程学院,北京100083 [4]黑龙江科技大学矿业工程学院,黑龙江哈尔滨150022

出　　处：《煤矿安全》2015年第5期50-53,57,共5页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51404278;51479195);中央高校基本科研业务费资助项目(2011QL07)

摘　　要：红阳矿区主采的7#煤层最大采深近1 000 m,冲击动力灾害越来越严重。为了解其发生机理,利用RMT-100型岩石力学试验机对7#煤层及顶板进行冲击倾向性试验研究。结果表明:煤样的冲击能量指数1.553,弹性能指数2.586,动态破坏时间221.25 ms,具有弱冲击倾向性,煤层顶板总弯曲能量达到532.08 k J,具有强冲击倾向性,得出煤样单轴抗压强度分别与冲击能量指数和弹性能指数呈现正相关性,而与动态破坏时间呈现负相关性。The largest mining depth is more than 1 000 meters in Hongyang Coal Mine, and burst dynamic disaster is more and more obvious. For the sake of understanding the mechanism of the dynamic phenomenon, the burst tendency test of 7^# coal seam and roof is used by RMT - 100 rock mechanics testing machine. The result shows that the impact energy index of coal seam is 1. 553, elastic energy index is 2. 586, dynamic damage time is 221.25 ms, the determination result is weak burst tendency, and the total bending energy of roof rock is 532.08 kJ with strong burst tendency, the uniaxial compressive strength of coal has positive correlation with impact energy index and elastic energy index respectively, and has negative correlation with the dynamic failure time.

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

分 类 号：TD324.1[矿业工程—矿井建设]