巷道高强度、高预应力锚杆索强力支护技术效果监测分析

Monitoring and Analysis of Strong Support Effect of Roadway with High-strength and Highprestress Anchor Cable

本文以四台矿8702综采工作面为工程背景,针对5702回风巷进行锚杆、锚索受力监测和巷道变形监测。通过监测巷道围岩表面位移、锚杆索受力分析等来评价支护效果。结果表明:该高强度、高预紧力锚杆+短锚索强力支护技术在大幅提高巷道掘进速度的同时,能够有效控制巷道围岩变形,取得较好效果。

Based on the engineering background of 8702 fully mechanized mining face in Sitai Mine, the stress monitoring of bolt and cable and the deformation monitoring of roadway in 5702 air return roadway are carried out. The supporting effect is evaluated by monitoring the surface displacement of surrounding rock and stress analysis of bolt cable. The results show that the high strength, high pre-tension bolt + short anchor cable strong support technology can effectively control the deformation of surrounding rock while greatly improving the roadway driving speed, and achieve better results.