Shandong Energy Zaozhuang Mining ( Group) Corporation Limited

为有效防止田陈煤矿7110工作面迎采空推采留设60 m隔离煤柱时发生冲击地压,采用理论分析及微震监测的方法,对冲击地压危险性进行分析,并提出相应的防治措施。理论分析可知冲击倾向性煤层发生冲击地压需满足应力条件和触发条件,其诱发因素主要有埋深、覆岩空间结构、扰动。根据实际条件分析可知7110工作面的轨道巷、联络巷实体帮满足冲击地压发生的应力条件和触发条件,冲击地压危险性高。微震监测结果表明:通过对危险区实施煤层钻孔卸压措施实现了应力转移,有效防止了冲击地压发生。

In order to effectively prevent the mine pressure bump occurred when No. 7110 coal mining face was advanced forward to the goaf at the isolated coal pillar with a width of 60 m,a theoretical analysis and microseismic monitoring and measuring method was applied to the analysis on the danger of the mine pressure bump and th e relevant prevention and control measures were provided. The theoretical analysis could understand the stress condition and triggering condition of the mine pressure bu mp occurred in the bump potential seam and the triggering factors would be the buried depth, overburden strata space structure and turbulences. The analysis on the actual condition showed that the coal mass sidewalls of the railway gateway and the connection gateway in No. 7110 coal mining face could meet the stress condition and the trig gering condition of the mine pressure bump occurred and the mine pressure bump danger was high. The microseismic mentoring and measuring results showed that the bo rehole pressure releasing measures conducted in the seam of the danger zone could realize the stress transfer and could effectively prevent the mine pressure bump occur red.