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南水北调中线干线工程自2014年通水运行以来,部分明渠段与水面交接部位衬砌面板发生冻损现象,面板表层剥蚀脱落。工程位于华北平原地区,冬季温差变化较大,尤其是京石段工程受气温变化影响较大,水面交接部位冻损破坏较多。考虑到中线干线工程主要以明渠输水为主,渠道全长1 103km,为做好水面交接部位衬砌板冻损破坏维修工作,特开展水面交接部位衬砌面板冻损破坏修复技术研究。
Since the mid-route of the South-to-North Water Diversion Project has run through the water in 2014, some of the lining panels at the junction of the open channel and the water surface have suffered freeze-thawing phenomenon, and the surface of the panel has been ablated and exfoliated. The project is located in the North China Plain. The winter temperature variation is quite large. In particular, the project of Jingshi section is greatly affected by temperature changes, and the damage caused by freeze-damage at the water transfer site is more. Considering that the main trunk line works mainly in the open channel, the channel length is 1 103 km in length. In order to do well in the repair and repair of the freeze-damaged lining panels of the water transfer sites, the research on the repairing techniques for the freeze-damaged lining panels at the water transfer sites is carried out.