围岩应力回迁诱发滞后性冲击与突出现象机制研究  

Mechanism of hysteretic rockburst and outburst induced by surrounding rock stress returning

作　　者：朱权洁[1] 尹永明[2] 刘金海[1] 温经林[3] 石建军[1] ZHU Quanjie YIN Yongming LIU Jinhai WEN Jinglin SHI Jianjun(School of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, China Information Center,China Academy of Safety Science and Technology, Beijing 100012, China School of Civil and Environment Engineering, University of Science and Technology Beijing, 8eijing 100083, China)

机构地区：[1]华北科技学院安全工程学院 [2]中国安全生产科学研究院信息中心,北京10012 [3]北京科技大学土木与环境工程学院,北京100083

出　　处：《中国安全科学学报》2017年第7期99-104,共6页China Safety Science Journal

基　　金：国家自然科学基金资助(51604115;51504096);河北省省级科技计划项目(16275512);廊坊市科学技术研究与发展计划项目(2016013116);河北省自然科学基金资助(E2016508003)

摘　　要：为探究卸压区域再次应力集中诱发异常冲击与突出事故的发生机制,以河南某矿25110工作面为例,结合河南2起典型事故,提出应力回迁概念。利用理论分析、数值模拟、现场实测等方法,研究应力回迁现象的发生过程、力学机制及防治对策。结果表明:围岩应力回迁现象存在,且具有滞后性、隐蔽性特征;深部煤体过度卸压弱化自身承载能力,并迫使支承压力向巷道方向回迁,是滞后性冲击与突出灾害发生的主要原因。结合该类灾害特点,提出近场强卸压与强支护、深部控卸压与强监测的防治对策,并被应用于河南某矿25110工作面,保证了该工作面的安全回采。To investigate the occurrence mechanism of rockburst and outburst accidents induced by returned stress of surrounding rocks,a Stress Returning（ SR） concept was proposed on the basis of a case-study within a 25110 working face in a coal mine（ locates in Henan Province,China）,where two typical accidents had been occurred before. The process of occurrence,mechanical mechanism,and corresponding prevention countermeasures of the SR phenomenon were thoroughly studied using methods of theoretical analysis,numerical simulations and field measurements,etc. The results indicate that the SR is characterized by hysteresis and an eclipse period and that the excessive pressure relief of deep coal body reduces its load-bearing capacity and the abutment pressure is coerced back to the roadway,which is the main reason for occurrence hysteretic rockburst and outburst. Countermeasures adopted according to the results have been applied in the 25110 working face to guarantee the mining safety.

关 键 词：围岩应力 滞后性冲击与突出 应力回迁 数值模拟 微震监测 

分 类 号：X936[环境科学与工程—安全科学] TD32[矿业工程—矿井建设]