深部巷道留底煤区域冲击地压机理与防治

Mechanism and Control of Rock Burst in Deep Roadway Retaining Bottom Coal Region

根据郓城煤矿1300工作面回风巷留底煤区域的深度和范围,划分了工作面回风巷危险区域。通过对留底煤区域冲击地压的破坏机理分析,对划分的危险区域采用爆破卸压、大直径钻孔卸压、开掘卸压槽等综合措施进行防冲治理,并结合钻屑法和应力在线监测技术对危险区域进行实时监测,有效地降低了冲击地压灾害的发生。

While dividing the risk degree of Yuncheng coal mine 1300 working face return airway bottom coal region is depending on the depth and scope of bottom coal region. According to destructive mechanism and analysis of bottom coal region＇s rock burst, there are many effective methods to reduce occurrence of rock burst and guarantee the safety production of deep bottom coal region, such as some comprehensive measures to manage scour prevention, like digging pressure-relieving groove, unloading pressure with dynamite and big diameter drilling, and combining the method of drilling slack.