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矿山巷道的支护维护是和地下采煤关联着的复杂而又繁重的工作。架设支架的劳动消耗占掘进巷道总消耗量的40～60％。在复
Mine roadway support and maintenance is associated with the underground coal complex and heavy work. Erection of the rack of labor consumption accounted for the total roadway tunneling consumption of 40 to 60%. In complex