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兰州皋兰山Ⅰ-4号滑坡紧靠市区,严重威胁滑坡前缘的人民生产、生活安全,对其进行稳定性分析和防治具有重要的现实意义。滑坡区年内降水集中,暴雨强度大,山坡陡峻,水流侵蚀强烈,岩土体工程地质性质较差,新构造运动强烈,水文地质条件对滑坡极为不利。在人为因素诱导下,滑坡出现明显的复活特征,滑坡在暴雨和地震两种工况下稳定性较差。结合滑坡特征和地形地貌条件,建议采用桩板式抗滑挡土墙对滑坡进行治理。
Landslide I-4, Gaolan Mountain, Lanzhou is close to the urban area, which poses a serious threat to the people’s production and living safety in the landslide front. It is of great practical significance for stability analysis and prevention. During the year, the landslide area has concentrated precipitation, heavy rain intensity, steep hill slopes and intense water erosion. The geotechnical properties of the rock and soil bodies are poor, and the neotectonic movement is intense. Hydrogeological conditions are extremely unfavorable to landslides. Landslides show obvious resurrection features under the guidance of human factors. Landslides are less stable under heavy rainfall and earthquake conditions. Combined with the characteristics of landslide and topography, it is suggested that the landslide should be treated with pile-plate anti-skid retaining wall.