The paper deals with design, placement, drainage and treatment measures of the water conveyance trunk canal of the extension and rehabilitation works of the north Xinjiang water delivery project. Because the scale of trunk canal system is enlarged, the canal shall be heightened and its associated structures shall be rehabilitated, therefore the canal slope hydraulic parameters and stability calculation shall be rechecked, its plan and placement shall be designed accordingly. The construction of the project started in 2015. Heightening of the canal will signifi cantly alleviate the current unbalance between supply and demand and further promote coordination and sustainable development of the water delivery project in north Xinjiang.%介绍北疆调水工程改扩建工程输水干渠渠道的设计，填筑，排水及处理措施。因干渠规模变大加高结构设计，相应对渠系建筑物进行加长改建。工程渠道贴坡加高水力学复核、方案设计、渠道填筑及坡稳定计算等。该工程已于2015年进入施工阶段，渠道加高工程建成后将会较大的缓解当前用水需求的矛盾，更好地促进北疆调水工程的协调和可持续发展。
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