论文部分内容阅读
11302 运输巷受到地质构造以及巷道掘进等因素影响,围岩破碎,顶板下沉量较大,给巷道后续使用带来较大威胁,为此,提出使用层次注浆方式控制巷道围岩变形。注浆选用新型无机加固材料,并依据现场实际情况对注浆加固参数进行设计。现场应用后,构造影响区巷道顶板下沉量在 4d 即可趋于稳定,最终下沉量控制在22mm,取得较好应用成果。研究成果可为其他矿井围岩注浆加固提供经验借鉴。“,”11302 transportation roadway is affected by geological structure and roadway excavation. The surrounding rock is broken and the roof subsidence is large, which brings great threat to the subsequent use of the roadway. Therefore, the layered grouting method is proposed to control the surrounding rock deformation of the roadway. New inorganic reinforcement materials are selected for grouting, and grouting reinforcement parameters are designed according to the actual situation. After field application, the roof subsidence of roadway in structure affected area tends to be stable in 4 days, and the final subsidence is controlled at 22 mm, which has achieved good application results. The research results can provide reference for grouting reinforcement of surrounding rock in other mines.