严寒地区抽水蓄能电站上水库冰块物理力学性能试验研究

Experimental study on physical and mechanical properties of ice cube in upper reservoir of pumped storage power station in cold region

由于抽水蓄能电站向上库抽水蓄能,向下库放水发电的运行特点,使得库区水位会频繁发生变化,冬季库区结冰后,随着水位变化流冰与冰排会对建筑物产生撞击。若库区形成完整冰盖,还可能会影响造成上下水库水流的交换。本文依托敦化抽水蓄能电站工程,对上水库制取冰样进行不同温度条件下的抗压强度与密度试验,明确了工程冰的物理力学性能特征,从而分析冰块撞击对建筑物的影响,同时为冰盖破碎条件的研究提供数据支撑。

Due to the operation characteristics of pumped storage power station,the water level in the reservoir will change frequently.After the reservoir freezes in winter,flowing ice and ice rows will impact buildings with the change of water level.If a complete ice sheet is formed in the reservoir,it may also affect the flow exchange between the upper and lower reservoirs.In this paper,based on Dunhua pumped storage power Station project,the compressive strength and density tests of ice samples from the upper reservoir were carried out under different temperature conditions,and the physical and mechanical properties of engineering ice were defined,so as to analyze the influence of ice impact on buildings and provide data support for the study of ice sheet breaking conditions.