岩土力学2012，Vol.33Issue(9)：2850-2856,7.
基于离散单元法的滑坡堆积及其涌浪计算
Calculation of heap shape of landslide and its surge based on discrete element method
徐寅 1陈胜宏2
作者信息
- 1. 武汉大学水资源与水电工程科学国家重点实验室,武汉430072
- 2. 南昌工程学院水利与生态工程学院,南昌330029
- 折叠
摘要
Abstract
Discrete element method (DEM) is adopted to simulate the whole failure process of reservoir bank slope. The flow chart of this paper is carried out and its corresponding software is developed. The basic principles of DEM are introduced. The disadvantages of the existing methods of calculating landslide velocity and advantages of DEM are analyzed. The height and shape of the surge of the reservoir stirred up by the landslide is simulated by combining the block information provided by DEM and wave equation, the heap shape of the landslide is also carried out by DEM. The feasibility and accuracy of the method is verified by case studies. The results of the examples indicate that the block velocity on the slope calculated by DEM agrees well with that the energy conservation method and Pan Jiazheng method; the DEM is more convenience and has a higher efficiency. The height of surge stirred up by multi-blocks is greater than that of single-block due to the plus of surges, which indicates that it is important to consider the plus of surges when analyzing the height of surge. The heap shape of the blocks provides basic data for the disaster assessment of landslide. The sliding of the block and the generating and transmitting of surge are also carried out by a self-developed DEM software, which provides a new idea for the study of the start, the process and the risk assessment of slope failure.关键词
滑坡灾害/涌浪/离散单元法/滑坡堆积Key words
landslide hazard/ surge/ discrete element method/ heap shape of landslide分类
建筑与水利引用本文复制引用
徐寅,陈胜宏..基于离散单元法的滑坡堆积及其涌浪计算[J].岩土力学,2012,33(9):2850-2856,7.
