兰州地区公路黄土边坡失稳机理研究

Study on Instability Mechanism of Highway Loess Slope in Lanzhou Area

在对兰州地区山丘、梁峁、台地的开挖过程中,由于强降雨等气候耦合作用,可能导致坡体失稳,对安全造成威胁,故须对影响开挖坡体的相关因素进行研究。通过对兰州地区公路沿线黄土边坡进行调查,分析黄土特征、地形地貌、降雨及气温等影响因素,研究了黄土边坡在地形、施工过程、降雨等因素影响下的失稳机理,为以后黄土边坡治理提供可靠的科学依据。

In the excavation process of massif, two loess hills and tableland in Lanzhou Area, it may cause the slope instability and the threats to security because of climate coupling of heavy rainfall. Therefore, it must be to study the relevant factors affecting the excavated slope. According to survey of loess slope along the highway of Lanzhou Area, the article analyzes the affecting factors of loess characteristics,topography, rainfall and temperature, and studies the instability mechanism of loess slope under the factor influences of topography, construction process and rainfall, which can provide the reliable scientific basis for the treatment of loess slope.