严寒地区抽水蓄能电站混凝土面板堆石坝抗冰冻关键技术研究

Research on improving the durability of concrete face rockfill dams of pumped storage power stations in severe cold regions

摘要

抽水蓄能电站水库的运行条件与常规水电站水库有所不同，具有库水位升降频繁、涨落速度快、消落深度大等特点。为适应严寒地区的低温运行环境，对面板堆石坝的筑坝料和止水系统提出更高的要求。依托清原抽水蓄能电站，对混凝土面板堆石坝面板结构混凝土配合比、表层止水结构型式、垫层料设计、面板表面抗冰拔措施等进行系统研究，提出严寒地区面板堆石坝抗冰冻关键技术的建议，供后续工程参考。

Abstract

The operation condition of the reservoir of pumped-storage hydroelectricity is different from conventional hydropower station reservoir, which has the characteristics of frequent rise and fall of reservoir water level, fast rise and fall, and large drop depth. In order to adapt to the low-temperature operating environment in severe cold areas, higher requirements have been put forward for the construction materials and water stop system of the face slab rockfill dam in the design. Relying on Qingyuan Pumped-storage hydroelectricity, this paper systematically studies the cushion material design of concrete face rockfill dam, concrete mix ratio of face slab structure, surface water stop structure type, anti ice uplift measures of face slab surface, and puts forward suggestions on key anti freezing technologies of face slab rockfill dam in severe cold areas for reference of subsequent projects.

关键词

抽水蓄能 / 严寒地区 / 面板堆石坝 / 抗冰冻 / 止水结构

Key words

pumped storage energy / severe cold areas / concrete face rock-fill dam / anti freezing and water stopping / sealing structure

Author summay

邢珊珊(1994—), 女, 工程师, 硕士, 主要从事水工结构设计研究。E-mail: [e-mail]