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移民新区东坡滑坡发育于小吉尔格朗河东岸二级残留阶地,坡面中部,坡体平均坡度35°,均为小型土质滑坡。因滑坡剪出口位置较高,滑动后,多为快速滑动,极易成灾,对沙尕村移民新区构成较大威胁。通过研究发现,滑坡主要受地形地貌、地层岩性、地质构造等原生地质条件控制,受大气降水、地下水、地震、人类工程活动等外界条件影响,其中大气降水和地下水为滑坡成因的主要影响因素。结合滑坡成因及影响因素,提出抗滑桩板墙和挡土墙相结合并辅以排水措施的防治方案,对该地区的滑坡防治具有较好的指导意义。
The Dongpo landslide in the resettlement new zone develops in the second-order residual terraces on the east bank of the Jilgrang River. The middle part of the slope has an average slope of 35 ° and is a small soil-based landslide. Due to the high position of the exit of the landslide shears, most of the landslides are prone to catastrophe after sliding, which is a big threat to the new area of Sha Ga Village. The research shows that the landslide is mainly controlled by the primary geological conditions such as topography, stratigraphy lithology and geological structure, and is influenced by external conditions such as precipitation, groundwater, earthquakes and human engineering activities. Among them, precipitation and groundwater are the main factors affecting the landslide . Combining with the causes of landslide and its influencing factors, this paper puts forward the prevention and cure scheme combining the anti-slide pile wall and retaining wall together with the drainage measures, which has a good guiding significance for landslide prevention in this area.