铜绿山矿新南风井石门壁后注浆施工

The Operation of Backwall Injection at CrossCut for New South AirShaft in Tonglushan Mine

铜绿山矿新南风井－１８５ｍ石门围岩条件复杂，有一较大裂隙穿过该地段，石门原已施工混凝土拱墙支护，在进行出水点顶水注浆前压水试验时，发现该支护段大量漏水，遂采取壁后注浆。

The geological condition of host rock is complicated and a wider fissure cross over at -185m crosscut for new south airshaft in Tonglushan Mine. The arch and walls of crosscut was primary supported with concrete lining. But during the pressing water test before grouting against water at the water outlet, it was founded that a great deal of water leaks happened in the supported zone. And then a backwall injection was applied to the zone with a satisfactory result.