工程地质学报2013，Vol.21Issue(3)：443-449,7.
翠华山山崩地质遗迹景观离散元数值模拟
NUMERICAL SIMULATION OF CUIHUA ROCK AVALANCHE WITH DISCRETE ELEMENT METHOD
吕艳 1王根龙 2张新社3
作者信息
- 1. 长安大学地球科学与资源学院 西安710054
- 2. 中国地质调查局西安地质调查中心 西安710054
- 3. 中国科学院工程地质力学重点实验室 北京100029
- 折叠
摘要
Abstract
It is very important to investigate geological relics landscapes for urban geological work.The Cuihua rock avalanche is a marvellous spectacle of seismic avalanches in China.Based on dynamic discrete element method,the dynamic response and failure process are simulated under a typical natural earthquake loading.The failure process of Cuihua rock avalanche is reproduced with the numerical simulation.The following results are obtained.Firstly,the amplification effect of velocity and acceleration is the reason of earthquake inertia force.The maximum magnification factor reaches 2.0 on the top of slope.Secondly,high speed and long run out are the characteristic of the rock avalanche.The results shown the maximum horizontal velocity reaches up to 44m· s-1 and the horizontal movement distance for some rocks reaches 460m at the front of the rock avalanche.Thirdly,the whole failure process include four stages:starting up stage,accelerating stage,decelerating stage and accumulation stage.关键词
地质遗迹景观/离散单元法/地震山崩/动力放大效应/高速远程Key words
Geo-site/ DEM/Seismic rock avalanche/ Magnification effect/ Long run out分类
天文与地球科学引用本文复制引用
吕艳,王根龙,张新社..翠华山山崩地质遗迹景观离散元数值模拟[J].工程地质学报,2013,21(3):443-449,7.
