1786年磨西地震触发的摩岗岭滑坡演化过程与成因机理
发布时间：2019-03-31 17:35
【摘要】：研究1786年磨西地震触发的摩岗岭滑坡特征及形成演化过程。采用资料收集、地面调查、三维实体模型、高精度遥感影像、理论分析、数值模拟等技术方法,对摩岗岭滑坡的形成进行全过程演化分析。摩岗岭地震滑坡演化过程分为6个阶段:河谷高边坡形成阶段以及斜坡浅表部岩体卸荷拉裂阶段、卸荷拉裂隙扩展阶段、潜在滑动面形成阶段、震动拉裂和高速启动阶段、抛射撞击溃散阶段、滑体堵江及溃决阶段。其成因机理为卸荷震动拉裂-剪断抛射堆积。
[Abstract]:The characteristics and evolution of the Morangling landslide triggered by the Moxi earthquake in 1786 are studied. Data collection, ground investigation, three-dimensional solid model, high-precision remote sensing image, theoretical analysis, numerical simulation and other techniques were used to analyze the whole process evolution of Morangling landslide. The evolution process of the Morangling earthquake landslide is divided into six stages: the formation stage of the high slope in the valley, the stage of unloading and pulling crack of the shallow rock mass of the slope, the stage of expansion of the unloading and pulling fracture, the stage of formation of the potential sliding surface, the stage of seismic pull-fracture and the stage of high-speed start-up. Ejection impingement stage, sliding body blockage and collapse stage. Its genesis mechanism is unloading vibration pull-crack-shear ejection accumulation.
【作者单位】： 中国地质调查局成都地质调查中心;四川省地质工程勘察院;地质灾害防治与地质环境保护国家重点实验室(成都理工大学);成都市勘察测绘研究院;
【基金】：中国地质调查局国土资源大调查项目(DD20160272,12120114069501)
【分类号】：P642.22
[Abstract]:The characteristics and evolution of the Morangling landslide triggered by the Moxi earthquake in 1786 are studied. Data collection, ground investigation, three-dimensional solid model, high-precision remote sensing image, theoretical analysis, numerical simulation and other techniques were used to analyze the whole process evolution of Morangling landslide. The evolution process of the Morangling earthquake landslide is divided into six stages: the formation stage of the high slope in the valley, the stage of unloading and pulling crack of the shallow rock mass of the slope, the stage of expansion of the unloading and pulling fracture, the stage of formation of the potential sliding surface, the stage of seismic pull-fracture and the stage of high-speed start-up. Ejection impingement stage, sliding body blockage and collapse stage. Its genesis mechanism is unloading vibration pull-crack-shear ejection accumulation.
【作者单位】： 中国地质调查局成都地质调查中心;四川省地质工程勘察院;地质灾害防治与地质环境保护国家重点实验室(成都理工大学);成都市勘察测绘研究院;
【基金】：中国地质调查局国土资源大调查项目(DD20160272,12120114069501)
【分类号】：P642.22
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