西部寒旱地区岩石冻融损伤机理研究  

Study on Freeze Thawing and Damage Mechanism of Rock in Western Cold and Dry Areas

作　　者：沈瑜[1] 王新新[2] 

机构地区：[1]兰州交通大学,甘肃兰州730070 [2]洛阳理工学院,河南洛阳471023

出　　处：《城市道桥与防洪》2017年第9期223-224,共2页Urban Roads Bridges & Flood Control

基　　金：国家自然科学基金项目(No.51541902,51669010,61162016,61202314);甘肃省自然基金项目(No1506RJZA082)

摘　　要：西部寒旱地区干燥、寒冷、温差、强紫外线和大风等气候特征形成了干湿冻融循环、冷热交替等典型的自然条件,对西部寒旱地区的恶劣气候环境下的岩石冻融损伤机制进行分析,详细阐述了岩石的冻融损伤过程,然后分析了冻融循环、冻融温度、化学环境和应力状态等外部影响因素对岩石冻融损伤的影响。The climatic characteristics of drying, frigidity, temperature difference, strong ultraviolet ray and high wind in the western cold and dry areas form the typical natural conditions of dry and wet freeze-thaw cycle, and the cold and hot alternation. The article analyzes the freeze thawing and damage mechanism of rock under the heavy weather environment of the western cold and dry areas, sets forth the freeze thawing and damage process of rock in detail, and then analyzes the influence of the external factors of freeze-thaw cycle, freeze-thaw temperature, chemical environment and stress state on the freeze thawing and damage of rock.

关 键 词：西部寒旱地区 岩石 冻融 

分 类 号：P642[天文地球—工程地质学]