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随着开采深度的增加,深井大型硐室围岩控制与支护越来越困难。文章针对滕东生建煤矿采区泵房大埋深、松软围岩等工程条件,采用锚网索喷高强耦合一次支护,以最大限度的利用硐室围岩的自撑能力,通过锚索加长支护调动硐室深部围岩强度实现对浅部围岩的控制,使支护体与围岩在强度上、刚度上和时间上实现有机耦合,待围岩压力充分释放、变形稳定后再进行浇注混凝土二次支护,取得了良好的支护效果,确保了支护的成功。
With the increase of mining depth, it is more and more difficult to control and support the surrounding rock of deep chamber. In this paper, according to the engineering conditions such as large depth of pumping station and soft surrounding rock in Tengdongsheng coal mine, a bolting and shotcrete high-strength coupled support is adopted to maximize the self-supporting capacity of the surrounding rock of the cavern, Controlling the strength of surrounding rock in deep chamber can realize the control of the shallow surrounding rock, make the support body and the surrounding rock realize the organic coupling in strength, rigidity and time. When the pressure of surrounding rock is fully released, the deformation is stable before pouring Secondary concrete support, and achieved good support effect, to ensure the success of support.