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夏甸金矿2006年末在主斜井-653 m 中段,安装了3台 MD280×65×8型多级清水泵,排水管路上配有φ250高压闸阀及逆止阀,压力值
At the end of 2006, Xiadian Gold Mine installed three MD280 × 65 × 8 multi-stage clean water pumps in the main inclined shaft of -653 m. The discharge pipe was equipped with φ250 high-pressure gate valve and check valve. The pressure value