【摘要】 寒区面板坝止水结构因低温易产生冰冻破坏，严重影响大坝的稳定性与安全性。本文通过对寒区面坝板止水结构冻害机理和破坏的分析，总结了目前解决止水结构受冻害的防冻措施和方法。同时，基于电伴热良好的防冻能力，对电伴热技术在寒区混凝土面板坝止水结构抗冻中的应用进行了可行性分析，同步结合传热过程的分析，提出电伴热系统的功率选用和布置设计的方法，为寒区混凝土面板坝止水结构的抗冻设计提供新的思路和参考。更多还原

【Abstract】 The sealing structure of face dam in cold area is easily damaged by freezing due to low temperature, which seriously affects the stability and safety of dam. Based on the analysis of freezing damage mechanism and damage of dam plate sealing structure in cold area, this paper summarizes the current anti-freezing measures and methods to solve freezing damage of sealing structure. At the same time, based on the good anti-freezing ability of electric heat tracing technology, the feasibility analysis of the application of electric heat tracing technology in the anti-freezing structure of concrete face dam in cold areas is carried out. Combined with the analysis of heat transfer process, the power selection and layout design method of electric heat tracing system is proposed, which provides a new idea and reference for the anti-freezing design of concrete face dam in cold areas.更多还原