摘要
寒冷地区水库土石坝护坡 ,冬季受冰冻作用 ,普遍发生严重破坏 .这种破坏主要是由护坡基土残余冻土层冻胀、冰推力及冰层弯矩等共同作用造成的 .在分析破坏机理及过程的基础上提出削减和抵抗冰冻坡坏作用的结构型式和设计计算方法 .
Heilongjiang Province is situated in the middle\|high latitude zone, freeze\|up period is more than half a year, mean annual temperature is \{-5\} ℃ to 4 ℃, the lowest temperature is \{-52.3\} ℃, frozen depth is 1\^5 m to 3\^0 m, the deepest depth can reach 4 m, ice depth of reservoir usually ranges from 1\^0 m to 1\^5 m, and the deepest ice sheet is 3\^0 m.\;The main factors for revetment damage of earth\|dam of plain reservoir in cold regions are as follows: uneven frost heaving of the underlying soil, ice thrust onto slope due to temperature variation, ice cover moment on revetment due to changing water level in reservoir.\;Up to now, based on the test results and experience, in Heilongjiang Province, dry pitching and later stone pitching cementation of fissures are not applicable. They cannot resist the damage of frost heaving, ice thrust and ice cover moment.\;Analyzing the mechanisms of underlying soil frost heaving, ice thrust and ice cover moment on the earth\|dam revetment, large smooth and thick packs, anti\|frost heaving blanket and rubble concrete are suggested to be plain reservoir revetment.
出处
《冰川冻土》
CSCD
北大核心
2002年第5期642-645,共4页
Journal of Glaciology and Geocryology
