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在长江上游通天河、支流雅砻江和大渡河上游筑坝建库,开凿穿过长江与黄河的分水岭巴颜喀拉山的输水隧洞,调长江水入黄河上游。西线工程的供水目标主要是解决涉及青、甘、宁、内蒙古、陕、晋等6省(自治区)黄河上中游地区和渭河关中平原的缺水问题。结合兴建黄河干流上的骨干水利枢纽工程,还可以向邻近黄河流域的甘肃河西走廊地区供水,必要时也可相机向黄河下游补水。
In the upper reaches of the Yangtze River Tongtian River, tributaries of the Yalong River and the upper reaches of the Dadu dam building, digging through the Yangtze River and the Yellow River watershed Bayan Har Mountains water diversion tunnel, transfer the Yangtze River into the upper reaches of the Yellow River. The water supply goal of the Western Line Project mainly aims to solve the problem of water shortage in the upper and middle reaches of the Yellow River and the Guanhe Plain of Weihe River in six provinces (autonomous regions) including Qinghai, Gansu, Ningxia, Inner Mongolia, Shaanxi and Shanxi. Combined with the construction of the backbone of the Yellow River water main dam project, but also to the adjacent Yellow River Gansu Hexi Corridor water supply, if necessary, can also camera to the lower reaches of the Yellow River hydration.