窄煤柱沿空掘巷锚杆支护及矿压监测技术  

Practice of Bolt Support and Strata Pressure Monitoring Technology for Narrow Coal Pillar of Roadway Driving along Goaf

作　　者：辛晓东 王浩 

机构地区：[1]潞安矿业集团公司,山西长治046204

出　　处：《煤》2017年第6期16-18,共3页Coal

摘　　要：为了解决某矿7806回风巷窄煤柱沿空掘巷支护问题,设计采用预应力全长锚固强力锚杆锚索组合支护系统,并采用综合矿压监测技术结合日常监测,分析巷道稳定情况,及时变更补强了支护设计。通过矿压监测发现两帮尤其是窄煤柱帮变形较大,随着远离工作面,巷道趋于稳定,约600 m后巷道变形大幅减小,稳定周期缩短,预应力全长锚固组合支护系统在窄煤柱沿空掘巷实际应用中能起到较好的效果,保证了巷道掘进安全。To solve the supporting problem of roadway driving along next goaf in the 7806 return ainvay of a coal mine, the whole prestressed anchor bolts combined supporting system is designed, and the roadway stability, as well as the supporting design could be analyzed and increased in time respectively by way of utilizing the integrated pressure monitor technology combined with daily monitor. The monitoring of the mine pressure helps to detect that the two gangs, especially the narrow coal pillars, have a large deformation. Along with keeping far away from the working face, the roadway tends to be stable. When approaching to 600m, the deformation of the road-way is dramatically reduced, and the stability period is shortened. The whole prestressed combined supporting system plays an important role in practical application of the narrow coal pillar along the roadway driving. Furthermore, it brings about roadway excavation safety, which would play a guiding role for future work.

关 键 词：沿空掘巷 锚杆支护 矿压监测 

分 类 号：TD353.6[矿业工程—矿井建设]