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鉴于深部巷道围岩裂隙发育,锚网及架棚等传统支护不能有效控制矿山压力影响,造成已掘巷道翻修工程量大,劳动强度高,严重制约煤矿安全高效生产实际,目前,国内外煤矿研究工作者已着手开展壁后打设中空注浆锚杆及注浆管,通过喷浆封闭围岩松散破碎状况,借助注浆泵充填加固围岩裂隙,重新构建围岩稳定结构。但对于深部留窄煤柱沿空掘进巷道,喷浆封闭依然存在着施工难度大、工程投入量高、影响掘进施工进度等制约因素。基于此,为了保证深部留
In view of the development of deep rock roadway cracks, the traditional support such as anchor net and shelter can not effectively control the impact of mine pressure, resulting in large amount of renovation work has been digging lane, high labor intensity, seriously hindered the safe and efficient production of coal mines, at present, coal mines at home and abroad Researchers have embarked on setting up the hollow grouting bolt and grouting pipe behind the wall, closed the loose and broken status of the surrounding rock by shotcrete, and filled and strengthened the fractures of the surrounding rock by grouting pump to rebuild the stable structure of the surrounding rock. However, for the deep roadway with narrow coal pillar along the roadway, there are still some problems that the construction of the shotcrete block is difficult, the amount of engineering investment is high and the progress of excavation construction is affected. Based on this, in order to ensure deep stay