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朝阳村滑坡变形始于2000年8月,发育大规模多期拉裂变形,主要沿软弱泥岩(狼屎泥)层滑动,具有不同于一般平推式滑坡的发育特征。依据野外调查及访问,揭示了朝阳村滑坡发育的特殊性,并将其拉裂变形分为三个期次,各形成期滑坡变形强度为3期>1期>2期。以地质历史法分析了朝阳村滑坡,其变形机制为“剪切-滑移-拉裂”型,属牵引-平推式滑坡,其形成演化过程可分为斜坡形成期→滑坡孕育期→滑坡变形期→滑坡贯通期→滑坡失稳五个阶段。目前滑坡较不稳定,强降雨及地震作用下可能出现贯通破坏,危害前缘居民安全及下游哈达山水利枢纽的运行。
The deformation of the landslide in Chaoyang Village began in August 2000 and developed large-scale and multi-period fracturing deformation, which mainly slipped along the weak mudstone (shit mud), which has different development characteristics from general push-push landslides. Based on the field investigation and interview, the peculiarity of landslide development in Chaoyang village was revealed. The deformation of the landslide was divided into three phases. The deformation intensity of landslides during each formation period was 3 periods> 1 period> 2 periods. Geological and historical analysis of the Chaoyang Village landslide, the deformation mechanism for the “shear - slip - Crack” type, is a traction - push push landslide, the formation and evolution can be divided into the slope formation period → landslide incubation period → Landslide deformation period → Landslide continuity → Landslide instability in five stages. At present, the landslide is less stable. Through heavy rainfall and earthquakes, there may be through damage, endangering the safety of front-line residents and the operation of Hadashan Hydro-junction in the lower reaches.