冰与混凝土坝坡间的冻结强度模拟试验

Laboratory simulation for freezing strength between ice and cement dike-dam

根据实际水库观测冰盖与护坡的冻结情况，在实验室内进行模拟水库冰盖与护坡局部断面的冻结试验．采用冰与混凝土板间的冻结，进行一次冻结、多次冻结、冰晶冻结、雪冰冻结等模式．分析出冰压力与冻结力的关系；在不同温度下测得各种冻结情况中的冻结强度，给出冻结强度随着温度变化的规律和数值．其结果为寒区平原水库坝坡抵抗冰推力破坏提供了设计参数．

According to freezing between ice cover and dike-dam in real reservoirs, the ice cover and cement dike-dam tests have been simulated in the laboratory. Freezing between ice and cement plate has been made under the first freeze, multiplicity freeze, ice crystal freeze and snow-ice freeze. Analyzing the relationship between ice pressure and freezing force, all kinds of freezing strength have been measured under different temperatures, giving its numerical value and change regulation with the temperature. The results provide some design parameters for the reservoirs in the cold region.