平推式滑坡多期拉裂变形特征及演化机制研究

发布时间：2018-03-04 05:00

本文选题：平推式滑坡　切入点：多期拉裂变形　出处：《水电能源科学》2017年10期 　论文类型：期刊论文

【摘要】：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。
[Abstract]:The deformation of the Chaoyang village landslide began in August 2000 and developed a large scale multi-stage tensile deformation, mainly sliding along the layer of weak mudstone (wolf dung mud), which is different from the development characteristics of the general flat push landslide. According to the field investigation and interview, This paper reveals the particularity of the development of the Chaoyang landslide, and divides its tensile crack deformation into three stages. The deformation intensity of the landslide in each forming period is 3 periods 1 stage 2. The geological history method is used to analyze the Chaoyang village landslide. Its deformation mechanism is "shear-slip-tension crack" type, which belongs to tow-flat type landslide, and its forming and evolution process can be divided into slope forming period. 鈫扡andslide incubation period. 鈫扡andslide deformation period. 鈫扡andslide through period. 鈫扵he landslide is unstable in five stages. Under the action of heavy rainfall and earthquake, the landslide may be broken through, which endangers the safety of the front residents and the operation of the downstream Hadashan water conservancy project.
【作者单位】：成都理工大学地质灾害防治与地质环境保护国家重点实验室;
【基金】：国家创新研究群体科学基金项目(41521002) 国家自然科学基金项目(41572302)
【分类号】：P642.22

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