摘要
为了研究埋藏较深的煤炭资源开采期间所面临的冲击地压显现难题,对典型的4种冲击地压从动静载叠加诱发冲击机理的角度进行了分析,并指出不同诱因的冲击地压的监测预警均可从能量的角度入手,防止因弹性应变能积聚过高而诱发冲击显现。通过对比传统监测与预警分析和优化后监测与预警分析关于微震能量分布演化规律情况,指明优化后监测与预警分析方法能够很好地对能量事件平均化分布集中区进行监测,并能实时分析集中区的演化规律以及其中能量的集中程度状况,起到了事前对冲击显现位置监测预警的效果。
In order to study the problems of rock bursts during the mining of deeply buried coal resources,the four typical rock bursts are analyzed from the perspective of the shock mechanism induced by the superposition of dynamic and static loads,and the rock bursts with different inducements are pointed out.The monitoring and early warning can be started from the perspective of energy to prevent the shock from being induced due to the excessive accumulation of elastic strain energy.By comparing traditional monitoring and early warning analysis and optimized monitoring and early warning analysis on the evolution of microseismic energy distribution,it is pointed out that the optimized monitoring and early warning analysis method can monitor the evenly distributed concentrated area of energy events,and can analyze and concentrate in real time.The evolution law of the area and the degree of energy concentration in it have played a role in monitoring and warning the impact of the impact in advance.
作者
杨增强
李丰硕
任长乐
YANG Zengqiang;LI Fengshuo;Ren Changle
出处
《山西焦煤科技》
CAS
2021年第3期4-7,11,共5页
Shanxi Coking Coal Science & Technology
基金
国家自然科学基金项目(51874292)
山东省深部冲击地压灾害评估工程实验室开放项目(鲁煤研开(2020)005号)。
关键词
冲击地压
动静载
微震能量
监测与预警
Rockburst
Dynamic and static loads
Microseismic energy
Monitoring and early warning
