摘要
汶川地震造成了大量的次生地质灾害,同时在灾区也形成了大量高陡斜坡堆积体,有的位于河流岸边,有的位于泥石流沟内,有的位于居民点及重要基础设施周围。在雨季来临时,强降雨对斜坡堆积体影响的大小对灾后重建有着重要的影响。本文采用室内物理模型进行实验研究,得出了在软岩地区的这类坡面堆积体产生运动的条件,并给出了粗颗粒的含量对坡体产生失稳的影响模式。
Wenchuan earthquake caused a large number of secondary geohazards, at the same time also created a large number of high and steep accumulations in the hit region, and some at the river shore, and some located in trenches of the debris flow, and some located around critical infrastructure. In rain season, the size of the effect of the heavy rainfall on the accumulations has an important impact on post disaster reconstruction. In this paper, the physical model of the experimental studies, drawn in the incipient motion conditions of this type of accumulations in soft rock areas, and given the impact model of the content of coarse particles on the accumulations instability.
出处
《地质灾害与环境保护》
2009年第4期81-85,共5页
Journal of Geological Hazards and Environment Preservation
基金
成都理工大学地质灾害防治国家重点实验室"科技减灾
重建家园"开放基金(DZJK-0810)
关键词
汶川地震
软岩
松散堆积体
灾害预测
Wenchuan earthquake
soft rock
accumulations
disaster prediction
