High sedimentcharge of Minjiang River caused severe abrasim of barrage gate's bottom plate, upstreams blanket & downstreams fencing wall during many year's operation.
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。
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Power charge is the most important funds income to change its charge taken mode, it can raise fund taken speed shorten midway and sediment time, raise fund using rate.