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以晋煤集团圣华煤业3#煤层复采巷道掘进为研究对象,分析研究过破碎冒落区的巷道围岩支护形式,提出以注浆加固围岩为主的“深(浅)孔管棚注浆+对棚+金属网+背板”方案,即采用管棚法构造人工假顶,配合工字钢对棚进行支护,通过管棚对假顶上部松散煤岩体进行水泥注浆永久加固、巷道两侧用背板和金属网加固的支护方案。
In this paper, the tunneling of roadway in 3 # coal seam of Jinhua Group Sanhua Coal Mining Company was studied as the research object, the support form of surrounding rock in the roadway with broken and falling area was analyzed and studied, and the “deep (shallow) Hole pipe shed grouting + shed + metal mesh + backplane ”program, that is, the use of pipe shed law artificial false roof, with the I-beam on the shed support through the roof of the false roof of loose coal and rock body Cement grouting permanent reinforcement, both sides of the roadway with the backing plate and metal mesh reinforcement support program.