弱胶结软岩斜井支护形式及监测方案研究

Study on support forms and monitoring scheme of inclined shaft of weak-bonding soft rock

鉴于红庆梁矿主斜井随着掘进深度的不断增加,主斜井顶板、两帮均出现不同程度的渗水现象,尤其是底板部分出现了大量的涌水使得掘进速度变慢,围岩遇水软化,施工难度大,提出了树脂锚杆+注浆锚杆+金属网+喷射混凝土封闭式支护形式,并阐述了具体的支护措施,指出该支护形式机械化程度高、施工速度快、综合效益好,可用于能注入浆液的砾岩层。

In light of inclined shaft conditions of Hongqingliang mine including tunnel depth increasing and top inclined shaft roof and lateral leakage phenomenon and tunneling slowing owning large amount of bottom water bursting,water softening of surrounding rock,construction difficulty,the paper puts forward enclosure support forms of resin bolt ＋ grouting bolt ＋ mental network ＋ spraying concrete,and describes its specific support measures,and finally points out its advantages,such as higher mechanization,fast construction speed,comprehensive benefits and being good for grouting slurry into conglomerate layer.