工作面顺槽掘进期间冲击地压防治技术的研究及应用

Research and Application of Prevention and Control Technology for Rock Burst During Working Face Driving along Groove

在掘进工作面施工现场采取钻屑法监测,对迎头面、两帮及底煤实施卸压钻孔,对岩柱间隔小于3m的底板下煤体采取爆破卸压等综合防治技术。掘进期间钻屑法监测均未出现煤粉量达到或超过临界指标的现象,且应力在线及微震系统监测也均处于可防可控状态,有效地遏制了冲击地压事故的发生,为冲击地压防治工作积累了宝贵的经验。

At the construction site of the excavation work face, the method of drilling cuttings is used to monitor rock burst, the heading face, the two gangs and the bottom coal are drilled to relieve pressure, and the sub-bottom coal body with a rock column interval of less than 3m is subjected to blasting pressure removal and other comprehensive prevention and control techniques. During the excavation, no phenomenon of coal powder reaching or exceeding the critical index occurred based on the monitoring by drilling cuttings, and the monitoring of stress online and microseismic system was also in a preventable and controllable state, effectively curbing the occurrence of impact ground pressure accidents, and also accumulating valuable experience for the prevention and control of rock burst.