岩土工程学报2015，Vol.37Issue(11)：2045-2050,6.DOI:10.11779/CJGE201511015
特厚煤层冲击地压重复发生的机理研究
Mechanism of repeated rock bursts in extra-thick coal seam
摘要
Abstract
Taking the rock burst recurring in the same region as the engineering background, the mechanism of the repeated rock bursts is explored by using the methods of theoretical analysis, field monitoring and numerical simulation. The results are as follows: (1) The region with repeated rock bursts in extra-thick coal seam has stress restoration phenomenon, and the extra-thick coal seam expands under source of force is the major reason which leads to stress restoration; (2) The repeated impact is the result of competition of many times between the impact force and the impedance force of the impacted body, and rock burst occurs many times during coal body transfers from relatively complete state to fracturing state when the impact force is greater than impedance force, till the coal body fractures completely. (3) Eliminating the force and stopping stress restoration can prevent the recurrence of rock burst. The results of this study may provide a useful reference for the prevention and control of rock bursts in extra-thick coal seam.关键词
特厚煤层/冲击地压/重复冲击/应力恢复/力源Key words
extra-thick coal seam/rock burst/repeated impact/stress restoration/source of force分类
建筑与水利引用本文复制引用
杨伟利,姜福兴,杨鹏,朱权洁,魏全德,王存文..特厚煤层冲击地压重复发生的机理研究[J].岩土工程学报,2015,37(11):2045-2050,6.基金项目
国家重点基础研究发展计划("973"计划)项目(2010CB226803) （"973"计划）
国家自然科学基金项目(51274022,51174016) （51274022,51174016）
