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1 调水工程概况南水北调西线第一期工程位于青藏高原东南部边缘地带,引水枢纽处在海拔3500mm 左右,位于大渡河的支流阿柯河、玛柯河、杜柯河和雅砻江支流泥曲河、达曲河。工程由“五坝七洞一渠”组成,即5座引水坝、260km 隧洞和16km 明渠输水40亿 m~3入黄河。隧洞通过沟河的自然分段和开凿人工支洞后,最长施工洞段37km。工程分别位于四川省甘孜、色达、壤塘、阿坝县,青海省班玛县和甘肃省玛曲县境内。工程示意图如图。
A water diversion project profile The first phase of the South-North Water Diversion West Line project is located in the southeast edge of the Qinghai-Tibet Plateau, diversion hub at an altitude of about 3500mm, located in the tributaries of the Dacu River Aku, Marco, Duke River and Yarlung tributary mud song River, up to Qu River. The project is made up of “five dams and seven ditches and one culvert”, that is, five dams, 260km tunnels and 16km open channels will inject 4 billion m3 into the Yellow River. After the tunnel is naturally divided by the ditch and the artificial branch holes are drilled, the longest construction section reaches 37 km. The project is located in Ganzi, Seda, Zhaotang, Aba, Sichuan Province, Banma County, Qinghai Province and Maqu County, Gansu Province respectively. Project diagram shown in Figure.