摘要
为了明确21172工作面发生冲击危险的可能性,从应力变化方向入手,研究了21172工作面超前支撑应力、围岩应力、围岩活动规律,得出应力变化趋势及峰值影响范围,明确了21172工作面有6处高危险区域,为安全回采提供技术保障。
In order to make clear the possibility of rock burst of the 21172 working face, starting withthe variation of stresses, the advanced support pressure, the stresses of surrounding rocks and the active law of surrounding rocks of 21172 working face are studied. The stress trend and the influence range of peak stress are obtained. There are 6 high risk area in 21172 working face. The result provide technical guarantee for safe mining.
出处
《煤炭技术》
CAS
2018年第2期178-180,共3页
Coal Technology
关键词
冲击地压
应力
防治
rock burst
stress
prevention
