| 黄土崩塌破坏模式及离散元数值模拟分析 |
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| 引用本文： | 王根龙,张茂省,苏天明,曾庆铭.黄土崩塌破坏模式及离散元数值模拟分析[J].工程地质学报(英文版),2011,19(4):541-549. |
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| 作者姓名： | 王根龙 张茂省 苏天明 曾庆铭 |
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| 作者单位： | 1.中国地质调查局西安地质调查中心 西安 710054; |
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| 基金项目： | 中国博士后科学基金(20090450565); 交通部西部交通建设科技项目(200831822353) |
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| 摘 要： | 黄土崩塌是黄土高原区最常见、致灾最为严重的一种地质灾害.首先,从黄土地形地貌、黄土类型及结构、黄土垂直节理、坡脚侵蚀、降雨、人类工程活动等方面分析了黄土崩塌的成因,认为黄土中的垂直节理和坡脚侵蚀作用是造成黄土崩塌的主要原因；其次,通过野外黄土崩塌变形破坏特征及地质现象分析,将黄土崩塌归纳为拉裂-坠落式、拉裂-倾倒式、拉...
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| 关 键 词： | 垂直节理 黄土崩塌 坡脚侵蚀 破坏机制 离散元数值模拟 |
| 收稿时间： | 2011-05-20 |
COLLAPSE FAILURE MODES AND DEM NUMERICAL SIMULATION FOR LOESS SLOPES |
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| WANG Genlong ZHANG Maosheng SU Tianming ZENG Qingming.COLLAPSE FAILURE MODES AND DEM NUMERICAL SIMULATION FOR LOESS SLOPES[J].Journal of Engineering Geology,2011,19(4):541-549. |
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| Authors: | WANG Genlong ZHANG Maosheng SU Tianming ZENG Qingming |
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| Institution: | 1.Xi'an Center of Geological Survey, China Geological Survey,Xi'an 710054;2.Key Laboratory of Engineering Geo-Mechanics, Chinese Academy of Sciences, Beijing 100029;3.Research Institute of Highway, Ministry of Transport, Beijing 100088 |
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| Abstract: | Loess collapse is a type of very common geological disasters in the loess plateau area of Northwest China.At first,this paper studies loess topography,loess type and structure,loess vertical joints,slope erosion,rainfall and human activities.The results show that both the vertical joints in loess and erosion at the toe of slope are the main causes of loess collapse.Secondly,based on field investigation and analysis on the geological phenomena,four typical failure modesare put forward to describe different t... |
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| Keywords: | Vertical joints Loess collapse Toe erosion Failure mechanism DEM numerical simulation |
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