| 澜沧江某水电站右坝肩岩体倾倒变形的数值模拟 |
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| 引用本文： | 谢,莉 李渝生 曹建军 刘根亮.澜沧江某水电站右坝肩岩体倾倒变形的数值模拟[J].中国地质,2009,36(4):907-914. |
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| 作者姓名： | 谢 莉 李渝生 曹建军 刘根亮 |
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| 作者单位： | 1. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川,成都,610059
2. 煤炭科学研究总院西安研究院,陕西,西安,710054 |
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| 摘 要： | 对该水电站坝址区陡立反倾板状结构岩体而言,纵向河谷的地形特征,使坝址两岸边坡大范围发育倾倒变形。针对该水电站倾倒变形问题,在掌握坝址区工程地质条件背景的基础上,通过对岩体倾倒变形基本特征及破裂程度分级等分析,建立边坡离散元的工程开挖和破坏机理的数值计算模型,得出了工程开挖边坡岩体倾倒变形特征和变形破坏机理发展过程为:初期弱倾倒变形岩体的层内剪切错动、强倾倒变形岩体的层内拉张变形、强倾倒变形岩体的切层张-剪破裂及极强倾倒破裂岩体的折断张裂(坠覆)破裂。研究结果为倾滑体的稳定性评价及工程开挖施工提供一定科学依据。
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| 关 键 词： | 工程开挖边坡 破坏机理模型 倾倒变形 离散单元法 |
Numerical simulation of toppling rock mass deformation in the right dam abutment of a hydropower station on the Lancang River |
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| XIE Li,LI Yu-sheng,CAO Jian-jun,LIU Gen-liang.Numerical simulation of toppling rock mass deformation in the right dam abutment of a hydropower station on the Lancang River[J].Chinese Geology,2009,36(4):907-914. |
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| Authors: | XIE Li LI Yu-sheng CAO Jian-jun LIU Gen-liang |
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| Institution: | 1.State Key Laboratory of Geohazard Prevention and Geoenvironment Protection;Chengdu University of Technology;Chengdu 610059;Sichuan;China;2.Xi'an Branch of China Coal Research Institute;Xi'an 710054;Shaanxi;China |
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| Abstract: | Steep and antithetic platy structure of rock mass and geomorphology of the longitudinal valley in the dam site area cause wide-range toppling deformation on the cross-strait slope.Aimed at solving problems of toppling deformation,the authors,in the light of regional engineering geological conditions,analyzed characteristics of toppling rock mass deformation,made degree classification of toppling ruptures,established discrete element slope models for excavation and failure mechanism,and detected characterist... |
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| Keywords: | excavated slope failure mechanism model toppling deformation discrete element method |
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