生态补水管道接入输配水系统方案及优化

Scheme and Optimization of Ecological Water Supply Pipeline Connecting to Water Transmission System

对南水北调中线工程新增生态补水管道是保障生态基流和应急生态补水的一个重要措施,如何在已有工程基础上优化增设方案成为新的问题。以大沙河生态补水管道工程为例,从安全可靠性、技术经济性及施工便捷性等方面考虑,对生态补水管道接入南水北调中线总干渠的连接线路、连接方式等进行了方案比选,并对管材选型、管径选择进行了优化设计,分析了管道穿越新河、大沙河左岸堤防、晋新高速及道路等交叉工程的具体方式。针对施工中存在的管道连接、降排水、导流及接合部碾压等关键问题,提出了具体处理措施,为今后类似工程的设计和施工提供技术参考。

Adding the ecological water replenishment pipeline to the middle route of the South-to-North Water Diversion Project is an important measure to ensure ecological base flow and emergency ecological water supply.How to optimize the additional scheme on the basis of the existing projects has become a new problem.Taking Dasha River Ecological Water Supply Pipeline Project as an example,the connection lines and connection modes of ecological water supply pipeline connecting to the main channel of the middle route of the South-to-North Water Transfer Project are compared from the aspects of safety,reliability,technical economy and construction convenience.The selection of pipe materials and pipe diameters are optimized designed.The specific ways of pipeline crossing Xinhe River,Dasha River left bank and Jin-Xin Expressway and roads are analyzed.In view of the key problems existing in the construction of pipeline connection,drainage,diversion and joint rolling,the specific treatment measures are proposed to provide technical reference for the design and construction of similar projects in the future.