桃园煤矿大断面岩巷施工特大冒顶事故经验分析

Experience Analysis on Serious Collapse Accidents Because of Large Sectton Rock Entry in Taoyuan Coal Mine

根据大断面岩巷施工实践及遇构造变化冒顶特征,提出了U型钢加补木垛、撞楔复合超前支护的施工技术方案,为大跨度巷道冒顶施工提供了借鉴经验。

The article raises replenishing stacks of wood with “U”steel,a scheme for supporting ahead of time of knocking woods,according to engage in unstru ehton, experience on large seeteon rock entry and changing character of collapse. And put it into practice, make sure it safely is worked, - istie provide more experience.