老的阿斯旺坝是一个拦河闸。

The old aswandam was a barrage.

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.