美姑河火洛村溃散型滑坡的成因动力学机理研究
发布时间：2018-07-25 11:03
【摘要】：以火洛村古滑坡为研究对象,调查研究区地质构造和地形环境条件,查明滑坡山体的破坏现象和岩体结构,分析滑坡发育特征,建立山体地质结构模型,采用数值计算反演滑坡山体破坏的成因,探讨溃屈的诱导因素及临界动力强度。结论如下:滑坡于晚更新世中晚期形成,具有溃散性高速远程碎屑流的特点;斜坡底部软弱带及陡倾节理控制山体结构及滑坡发育特征,其对地震动力的响应显著;溃屈临界地震加速度为0.3 g。
[Abstract]:Taking Huoluomungu landslide as the research object, the geological structure and topographic environmental conditions of the study area are investigated, the failure phenomenon and rock mass structure of the landslide are found out, the development characteristics of the landslide are analyzed, and the geological structure model of the mountain body is established. The causes of landslide failure are inversed by numerical calculation, and the induced factors and critical dynamic strength of buckling are discussed. The conclusions are as follows: the landslide formed in the middle and late Pleistocene and has the characteristics of collapsing high speed and long distance clastic flow, the weak zone at the bottom of the slope and the steep dip joint control the structure of the mountain body and the characteristics of the landslide development, and its response to the seismic dynamics is remarkable. The critical seismic acceleration of buckling is 0.3 g.
【作者单位】： 成都理工大学环境与土木工程学院;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】：国家自然科学基金面上项目(41072231) 地质灾害防治与地质环境保护国家重点实验室方向性项目(40100-00002219)资助
【分类号】：P642.22
[Abstract]:Taking Huoluomungu landslide as the research object, the geological structure and topographic environmental conditions of the study area are investigated, the failure phenomenon and rock mass structure of the landslide are found out, the development characteristics of the landslide are analyzed, and the geological structure model of the mountain body is established. The causes of landslide failure are inversed by numerical calculation, and the induced factors and critical dynamic strength of buckling are discussed. The conclusions are as follows: the landslide formed in the middle and late Pleistocene and has the characteristics of collapsing high speed and long distance clastic flow, the weak zone at the bottom of the slope and the steep dip joint control the structure of the mountain body and the characteristics of the landslide development, and its response to the seismic dynamics is remarkable. The critical seismic acceleration of buckling is 0.3 g.
【作者单位】： 成都理工大学环境与土木工程学院;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】：国家自然科学基金面上项目(41072231) 地质灾害防治与地质环境保护国家重点实验室方向性项目(40100-00002219)资助
【分类号】：P642.22
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