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一、泥沙问题黄河三门峡水库开始蓄水时,渭河挟带大量泥沙汇入水库,泥沙一入静水即淤淀结成碍航的“拦门沙”,使陕人大哗,以致耗时三年,耗资十亿的三门峡大坝不得不予以改建。原拟发电120万kW,改为20万kW,而且不能常年发电。长江三峡水库蓄水后,有嘉陵江等多沙河流流入静水,淤积当不可免,如果也出现“翘尾巴和“拦门沙”现象,则将蹈三门峡水库的覆辙,前车之鉴不可不慎。我意在三峡工程施工的同时,应在上游多沙河流中段建拦沙坝。这种坝可建成低滚水坝(视需要后期可加高),
First, sediment problem When the Yellow River Sanmenxia reservoir began to impound, the Weihe River with a large amount of sediment into the reservoir, sediment into a stagnant water that silt stagnation into a barrage of “barricade sand”, so that the Chinese people uproar, so time-consuming In three years, the San Miaoxia Dam, which cost billions, had to be rebuilt. Originally intended to generate 1.2 million kW, to 200,000 kW, and can not be perennial power generation. After the impoundment of the Three Gorges Reservoir in the Three Gorges Reservoir, there are Jiujiang River and other sandy rivers flowing into the still water, sedimentation is inevitable, if there is “curled tail and” bar door sand "phenomenon, then the mistakes of Sanmenxia Reservoir, a lesson learned. At the same time of the construction of the Three Gorges Project, a sand bar dam should be built in the middle section of the upper stream of the Dousha River, which can be built into a low rolling dam (which can be increased later if necessary)