| 强震条件下碎裂岩体崩塌机理及崩塌后壁对堆积体稳定性影响研究 |
| |
| 引用本文： | 赵伟华,黄润秋,赵建军,巨能攀,李果.强震条件下碎裂岩体崩塌机理及崩塌后壁对堆积体稳定性影响研究[J].工程地质学报(英文版),2011,19(2):205-212. |
| |
| 作者姓名： | 赵伟华 黄润秋 赵建军 巨能攀 李果 |
| |
| 作者单位： | 成都理工大学 地质灾害防治与环境保护国家重点实验室 成都 610059 |
| |
| 摘 要： | 5 12 汶川地震的强震作用诱发产生了大量崩塌地质灾害,且多发生于碎裂结构岩体中。崩塌后斜坡后缘岩体及前缘堆积体的稳定性和后缘岩体对前缘堆积体稳定性的影响研究同样是震后灾害所面临的问题。以干河沟沟口斜坡为例,在分析该斜坡结构特征及崩塌机理的基础上,采用二维离散元软件UDEC模拟了斜坡在天然或强震条件下的稳定状态和可能失稳过程; 运用极限平衡法对陡壁岩体再次崩塌,产生新物质堆载在现有崩塌堆积体后缘前、后分别建立模型进行了稳定性分析。研究结果表明:碎裂岩体崩塌过程可分为应力重分布、潜在崩塌体形成和地震诱发崩塌3个阶段。崩塌堆积体在考虑后缘堆载作用之前,在天然或地震环境下均处于相对稳定状态,考虑堆载作用之后,其可能会在地震条件下失稳。离散元法和极限平衡法的组合使用,对于解决同类斜坡的同类问题切实可行。
|
| 关 键 词： | 强震 碎裂岩体 崩塌后壁 堆积体 稳定性 |
| 收稿时间： | 2010-08-20 |
ROCKFALL MECHANISM OF CATACLASTIC ROCK MASS AND INFLUENCE OF BACK WALL UPON THE STABILITY OF ACCUMULATION UNDER STRONG EARTHQUAKE |
| |
| ZHAO Weihua HUANG Runqiu ZHAO Jianjun JU Nengpan LI Guo.ROCKFALL MECHANISM OF CATACLASTIC ROCK MASS AND INFLUENCE OF BACK WALL UPON THE STABILITY OF ACCUMULATION UNDER STRONG EARTHQUAKE[J].Journal of Engineering Geology,2011,19(2):205-212. |
| |
| Authors: | ZHAO Weihua HUANG Runqiu ZHAO Jianjun JU Nengpan LI Guo |
| |
| Institution: | State Key, Geological Hazard, Geological Environment, Chengdu University 610059 |
| |
| Abstract: | The Wenchuan 8.0 earthquake triggered a huge number of rockfall hazards.The hazards most happened in cataclastic rock mass.The respective stability of the back wall and the front accumulation of the slope and the influence of the back wall upon the stability of accumulation are problems that are faced by people after the earthquake.This paper takes the Ganhekou rockfalling accumulation as a example.It is based on analysis of the structure feature and genetic mechanism of the slope.It uses the 2D Discrete El... |
| |
| Keywords: | Strong earthquake Cataclastic rock mass Rockfall back wall Rockfalling accumulation Stability |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《工程地质学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《工程地质学报(英文版)》下载免费的PDF全文 |
