长锚索预锚固控顶在谦比希铜矿中的应用

Application of long anchor cable reinforcement technique in Chambishi Copper Mine

谦比希铜矿深部上向分层水平充填采场顶板暴露面积较大,且上盘围岩节理裂隙发育,导致顶板垮冒严重,贫化问题突出。据此提出了采场顶板长锚索预锚固控顶技术,阐述了其支护机理、支护参数及施工工艺。实际应用表明:采用长锚索预锚固控顶、配合锚杆(钢带)联合支护,能够有效控制采场顶板冒落,为类似矿山提供了借鉴意义。

The room and pillar upward horizontal sublevel filling method is adopted in the deep ore body of Chambishi Copper Mine, the large exposed area of mine roof and developing joints of surrounding rock in the hanging wall led to serious roof collapse and ore dilution. Thus, the prestress anchorage technology with long anchor cable was put forward to control the stability of roof. The sup- port mechanism, parameter, and construetion process was introduced. Practice application shows that long anchor cable reinforcement technique can control effectively the collapse of mine roof in conjunction with the bolt and steel strip, which is a reference to similar mine.