综放工作面回采巷道防冲击地压技术实践

Practice of anti-shock ground pressure technology for mining roadway in fully mechanized caving face

为有效防止四水平北11层1-3区二段工作面回采期间出现冲击地压现象,通过分析工作面的地质情况,结合现有的监测和治理技术,决定采用点监测、局部监测和区域监测的形式进行综合监测,采用煤层注水,钻孔卸压和卸压爆破的方式对危险区域进行处理。结果表明:该监测技术和防冲击地压技术体系实施后,工作面的回采期间无冲击地压现象出现。

In order to effectively prevent the impact of ground pressure during the mining of the second section of the No.1 1-3 in the four-level North, the analysis of the geological conditions of the working face, combined with the existing monitoring and treatment techniques,decided to use point monitoring and local monitoring. Comprehensive monitoring is carried out in the form of regional monitoring, and the dangerous areas are treated by coal seam water injection, drilling pressure relief and pressure relief blasting. The results show that after the implementation of the monitoring technology and the anti-shock pressure technology system, no impact pressure phenomenon occurs during the mining of the working face.