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介绍了郑煤集团超化煤矿在“三软”条件下U型钢支护巷道的破坏特性及原因。该矿在31回风下山巷道变形严重地段进行了“O”形全封闭式支架试用，取得了良好的社会和经济效益。
U型钢支护巷道破坏原因及全封闭支架的应用
【摘 要】
：
介绍了郑煤集团超化煤矿在“三软”条件下U型钢支护巷道的破坏特性及原因。该矿在31回风下山巷道变形严重地段进行了“O”形全封闭式支架试用，取得了良好的社会和经济效益。
【机 构】
：
郑煤集团超化煤矿
【出 处】
：
煤炭科技
【发表日期】
：
2011年3期
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