双峰寺水库大坝上游柔性防渗设计和施工要点分析

Key points of design and construction of flexible impermeable in upstream of Shuangfengsi Reservoir Dam

碾压混凝土大坝上游防渗设计和施工是这类坝型需要重视的关键环节,而碾压混凝土层面结合质量直接影响坝体的抗渗性,往往是碾压混凝土大坝防渗的薄弱环节。从碾压混凝土上游防渗设计、表面辅助防渗方案选择、原材料性能和施工要点等方面开展研究,最后选定双峰寺水库大坝上游防渗设计方案,明确施工要点,保证工程顺利实施。

The design and construction of upstream impervious layer of roller compacted concrete(RCC)dam is the key link of this kind of dam.The combination quality of roller compacted concrete(RCC)layer directly affects the impermeability of dam,which is the weak link of RCC dam.In this paper,the design of impervious layer of roller compacted concrete upstream,the choice of surface-aided impervious scheme,the performance of raw materials and construction points are studied.Finally,the design scheme of upstream impermeable layer of Shuangfengsi Reservoir dam is selected,the key points of construction are defined,and the smooth implementation of the project is ensured.