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左岸排水倒虹吸采用河穿渠交叉型式,穿渠建筑物渗漏或总干渠内水外渗均会影响总干渠的渗透稳定,加强对该部位的反滤排水设计,直接关系到总干渠的安全问题。经过分析研究,参考长江勘测规划设计研究有限责任公司编制的《南水北调中线一期工程总干渠渠道设计补充技术规定》,对左岸排水倒虹吸渗控设计进行研讨。
Inverted siphon drainage on the left bank adopts a cross-river crossing type. The seepage through the canal construction or the water infiltration in the main canal will affect the infiltration stability of the main canal. Reinforcing the design of filtration and drainage at this site is directly related to the safety of the main canal problem. After analysis and research, reference is made to the Supplementary Technical Specification for Channel Design of Main Canal of the First Phase of the South-to-North Water Diversion Project compiled by Changjiang Surveying Planning Design and Research Co., Ltd. to discuss the design of drainage inverted siphon control on the left bank.