长江科学院院报2018，Vol.35Issue(3)：65-69,74,6.DOI:10.11988/ckyyb.20171103
坚硬煤岩组合体变形破坏特征及冲击特性研究
Failure and Coal Bumps Characteristics of Hard Roof-coal Structure
摘要
Abstract
Uniaxial compression tests with different loading rates were conducted on standard samples of combination samples of"roof-coal"structure caused by coal bump. By analyzing the stress and strain development process and acoustic emission response characteristics under different loading conditions, the basic damage modes and the possibleconditions of abrupt change were obtained. The deformation and failure of the samples experienced obvious developmentstages with the increase of loading rate, namely progressive shear failure, splitting failure and structuralfailure. Sudden holistic instability eventually occurred with the weakening of internal bearing structure. Through analyzingthe relative slip characteristics of composite structure and the geological conditions and mining effects of typicalmines, the failure mode of coal bumps under the condition of compound coal-rock is clarified. The results offerreference for targeted failure control.关键词
冲击地压/煤岩组合体/应力条件/冲击特性/变形破坏特征/煤岩破坏模式Key words
coal bumps/compound coal-rock/stress condition/burst characteristics/deformation characteristics/failure mode of coal-rock分类
矿业与冶金引用本文复制引用
王宁,姜耀东,朱登元,闫正余..坚硬煤岩组合体变形破坏特征及冲击特性研究[J].长江科学院院报,2018,35(3):65-69,74,6.基金项目
国家重点基础研究发展计划(973)项目(2010CB226801) （973）
