防灾减灾工程学报2011，Vol.31Issue(2)：212-217,6.
汶川地震高速远程滑坡速度研究
Study on Kinematic Velocity of High-speed and Long-range Landslides Induced by Wenchuan Earthquake
摘要
Abstract
The Wenchuan earthquake triggered lots of high-speed and long-range landslides, and under the super-strong ground motions,the slope was easily torn and ejected,then the sliding mass was crashed and transferred into debris flow for long-range movement because of the terrain and its potential energy. This type of rock-fragment flow had great kinematic velocity and extraordinary running out distance which caused great disasters and losses to the stricken region people. Based on lots of field investigations of large-scale typical high-speed and long-range landslides induced by the Wenchuan earthquake, this paper summarizes and analyzes the initial flight velocity, maximum kinematic velocity and debris flow velocity,comparatively calculates the movement velocity and motility of Donghekou landslide by different simplified methods. Results show that the movement characteristic value of Donghekou landslide is 0. 2292,maximum kinematic velocity is 63.40 m/s, and average velocity exceeds 25 m/s, which belongs to superhigh speed landslide and has strong debris flow characteristics.关键词
汶川地震/高速远程滑坡/滑坡运动特征Key words
Wenchuan earthquake/ high-speed and long-range landslide/ characteristics of landslide movement分类
天文与地球科学引用本文复制引用
方华,裴来政,向灵芝..汶川地震高速远程滑坡速度研究[J].防灾减灾工程学报,2011,31(2):212-217,6.基金项目
国家"973"计划项目(2008CB425802)资助 （2008CB425802）
