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为避免寒冷地区抽水蓄能电站岸坡砌石拔出及止水撕裂破坏的问题,以抽水蓄能电站蒲石河上库冰冻为例,分析了水库水流条件、机组运行规律、气温变化等因素对冰层形成厚度及分布的影响;并实测了典型位置的冰压力,依据实测数据和现场破坏情况分析了冰压力、基土冻胀及风浪、浮力拉拔对上库砌石岸坡的破坏情况。结果表明,浮力拉拔破坏是造成岸坡砌石拔出及止水撕裂破坏的主要原因。
In order to avoid the problem of rockfill pull-out and water-stop tear in the slope of pumped-storage power station in cold region, taking the ice-storage of the reservoir as an example, this paper analyzes the reservoir water flow conditions, the operating rules of the unit and the temperature change The influence of ice pressure, the frost heave of foundation soil, the storm wave and buoyancy drawing on the crushed rockfill bank slopes was analyzed. The ice pressure of the typical location was measured. The results show that the failure of buoyancy drawing and drawing is the main reason that leads to the dewatering and tearing failure of the quayside masonry.