近距离大倾角含水煤层群软围岩支护技术
煤炭科技(2014)
Abstract
昊源煤矿+525 m水平1314轨道巷施工过程中,较长范围处于上段采空区积水线内,属近距离大倾角含水煤层群软弱围岩,采用让抗结合的柔刚耦合支护方式,开挖初期采取柔性支护,二次支护采用刚性支护,抑制巷道流变,改善围岩应力,成功地控制了顶板的离层大变形,安全通过了积水区.更多还原
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