摘要
以某矿掘进工作面冲击地压事故为工程背景,通过理论分析和数值模拟,研究了夹矸厚煤层冲击地压的发生机理,认为夹矸带形成的应力集中区与掘进面超前应力叠加造成局部应力高度集中,是诱发掘进工作面冲击地压的主要原因;在此基础上,提出了"迎头-巷帮-底板"综合卸压方法以及合理的掘进支护方案。
Taking the rock burst accidents occurred in driving face of a certain coal mine as engineering background, through theoretical analysis and numerical simulation, the mechanism of rock burst occurred in driving face of thick coal seam with rock parting was stud- ied. When driving face is in rock parting zone, stress concentration area in rock parting zone superimposes advancing stress of driving face so that local stress is highly concentrated in driving face, which is the main reason of the occurrence of rock burst. Based on the mechanism, ＂driving face - roadway walls - floor＂ comprehensive distressing method and reasonable supporting scheme during driv- ing were adopted.
出处
《煤矿安全》
CAS
北大核心
2016年第1期88-91,共4页
Safety in Coal Mines
基金
国家重点基础研究发展计划(973计划)资助项目(2010CB226803)
国家自然科学基金资助项目(51274022
51174016)
关键词
夹矸
厚煤层
掘进工作面
冲击地压机理
防治技术
rock parting
thick coal seam
driving face
mechanism of rock burst
prevention technology
