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以蒙陕矿区葫芦素煤矿2-1煤东翼回风大巷掘进为工程背景,详细介绍了深部高应力矿井永久巷道支护技术与现场应用情况。在深部巷道围岩地质力学测试与评估、可锚性试验、锚杆支护作用机理分析的基础上,提出合理的锚网索支护方案。
Taking the excavation of the return air large roadway in the east wing of coal mine 2-1 of Hunsu coal mine in Meng-Shan mining area as the engineering background, the supporting technology and field application of permanent roadway in deep high stress mine are introduced in detail. On the basis of the geotechnical mechanics test and evaluation of surrounding rock in deep tunnel, anchorage test and the mechanism of bolting support, a reasonable scheme of anchor net support is proposed.