由于岷江含沙量大，使得映秀湾水电站拦河闸在多年运行中间室底板、上游铺盖和下游护坦磨损严重。
High sediment charge of Minjiang River caused severe abrasim of barrage gate 's bottom plate , upstreams blanket & downstreams fencing wall during many year 's operation .
映秀湾水电站