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一、工程概况:西川河排洪洞是金堆城钼业公司露天矿的关键配套工程,它将流经采矿场的西川河的河水引出采场,对露天矿的持续生产意义十分重大。该工程由引渠、排洪洞、洞后消能三大部分所组成,全长1488.92米。其中排洪洞长1143.62米,断面为城门洞形,最大开挖断面为5.9×7.5m~2(宽×高),最大成洞断面为4.5×6.6m~2。排洪洞明流泄洪能
First, the general situation of the project: Xichong River Paihong hole Jinduicheng Molybdenum Company open pit mine is a key ancillary works, it will flow through the mining area of the Nishikawa River River lead-out stope, the continuous production of open-pit mines is of great significance. The project by the drainage, drainage hole, hole energy dissipation consists of three parts, a total length of 1488.92 meters. Among them, the discharge hole is 1143.62 meters in length with a section of the gate with a hole shape of 5.9 × 7.5m ~ 2 (width × height) and a maximum hole section of 4.5 × 6.6m ~ 2. Flood discharge Dongming flood discharge can