急倾斜软煤层煤巷锚网支护技术研究

Study on support of mine roadway in steep soft seam

针对青海省某煤矿开采煤层为急倾斜煤层且较松软,煤巷掘进巷道支护难度大,支护方式相对落后的问题,提出采用管缝式锚杆、金属网、钢筋梯的锚网支护方式。通过现场施工试验段进行验证,试验结果表明支护方案能够有效控制巷道围岩变形,取得了良好的技术经济效果,降低了支护成本,减轻工人的劳动强度。

According to the problem that supporting in steep soft seam is very difficu-h in a certain coal mine of Qing hai Province. The style of supporting in mine roadway is very backward. According to above problems, bolt net support with slit wedge bolt, metal net, steel ladder was put forward. Field test showed that the support scheme could effectively control the surrounding rock deformation and achieved good technical and economic effects.