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三门峡水库是解放后在多泥沙黄河上修建的第一座大型水库,1960年9月建成运用后,因泥沙问题被迫两次改变了运用方式,即由“蓄水拦沙”改变为“滞洪排沙”,又改变为合理防洪排沙,低水头径流发电。以“确保西安,确保下游”为原则,并先后对枢纽进行了两次改建。水库运用32年来。为下游带来了巨大的防洪效益和经济效益及明显的社会效益,这是以库区大量淹没、移民和日益发展的洪涝灾害为代价的。我省关中东部100万亩平川好地被淹没,
Sanmenxia Reservoir was the first large-scale reservoir built on the sediment-laden Yellow River after its liberation. After its completion and utilization in September 1960, it was forced to change its mode of operation twice due to the problem of sediment, from “water storage and sediment removal” to “Flood detention and sediment flushing”, but also changed to a reasonable flood control sediment, low head runoff power generation. With the principle of “ensuring Xi’an and ensuring the downstream”, it has carried out two alterations to the hub. Reservoir used 32 years ago. Bringing huge flood control benefit, economic benefit and obvious social benefit to the downstream. This is at the cost of massive flooding, immigration and flood disaster in the reservoir area. 1000000 acres of plain in the eastern part of Guanzhong in our province is well submerged,