|
|||||
|
|
| 考虑岩体开挖卸荷边坡岩体质量评价 | |
| 引用本文： | 王瑞红,李建林,蒋昱州,王乐华,李红心.考虑岩体开挖卸荷边坡岩体质量评价[J].岩土力学,2008,29(10):2741-2746. |
| 作者姓名： | 王瑞红 李建林 蒋昱州 王乐华 李红心 |
| 作者单位： | 1. 武汉大学,水利水电学院,武汉,430071;三峡大学,三峡库区地质灾害教育部重点实验室,宜昌,443002 2. 三峡大学,三峡库区地质灾害教育部重点实验室,宜昌,443002 3. 河海人学,岩土工程科学研究所,南京,210098 |
| 摘 要： | 正确评价开挖后岩体质量并对其进行分类,对研究岩石边坡开挖卸荷后的稳定性有十分重要的意义.以某水电站坝肩高边坡开挖工程为背景,运用卸荷岩体力学的理论与方法,对坝肩边坡开挖岩体进行三维有限元分析.根据边坡岩体开挖后应力应变场的动态变化情况,确定岩体开挖卸荷后质量损伤劣化程度,并根据岩体开挖卸荷后的力学参数,采用RMR法对开挖后的边坡岩体质量进行评价.结果表明,边坡岩体RMR值随开挖后卸荷量的增大基本呈线性递减趋势,进而考虑开挖卸荷影响因素,修正了RMR法中的评价参数,为以后用该法评价开挖后的岩体质量提供参考. |
| 关 键 词： | 开挖 动态卸荷 岩体质量评价 稳定性分析 RMR值 |
| 收稿时间： | 2006-12-11 |
Quality evaluation of unloaded slope rock mass |
|
| WANG Rui-hong,LI Jian-lin,JIANG Yu-zhou,WANG Le-hua,LI Hong-xin.Quality evaluation of unloaded slope rock mass[J].Rock and Soil Mechanics,2008,29(10):2741-2746. | |
| Authors: | WANG Rui-hong LI Jian-lin JIANG Yu-zhou WANG Le-hua LI Hong-xin |
| Institution: | 1. School of Water Resources and Hydropower, Wuhan University, Wuhan 430072, China; 2. Key Laboratory of Geological Hazards on Three Gorges Reservoir Area, Ministry of Education, China Three Gorges University, Yichang 443002, China; 3. Research Institute of Geotechnical Engineering, Hohai University, Nanjing 210098, China |
| Abstract: | Rock mass quality has great influence on rock slope stability.So it is very important and necessary to re-classify the rock mass and evaluate its quality correctly after excavation.Based on the unloading rock mass mechanics theory,the arch dam abutment excavated high slope of one power station is analyzed by finite element method.Comparing initial stress field with excavation stress field,the rock mass unloading degree is studied;and then the degree of rock mass quality deterioration after excavation is als... |
| Keywords: | excavation dynamic unloading rock mass quality evaluation stability analysis RMR |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《岩土力学》浏览原始摘要信息 | |
| 点击此处可从《岩土力学》下载免费的PDF全文 | |