| 基于抛物线型D-P准则的岩质边坡稳定性分析 |
| |
| 引用本文： | 黄宜胜,李建林,常晓林.基于抛物线型D-P准则的岩质边坡稳定性分析[J].岩土力学,2007,28(7):1448-1452. |
| |
| 作者姓名： | 黄宜胜 李建林 常晓林 |
| |
| 作者单位： | 1.武汉大学 水资源与水电工程科学国家重点实验室，武汉 430072；2.三峡大学 地质灾害防治研究院，宜昌 443002 |
| |
| 摘 要： | 岩质边坡内通常会存在部分拉剪屈服区，因此，在岩质边坡的稳定性分析中采用能够同时考虑拉剪屈服和压剪屈服的H-B准则相较M-C准则来说更为合适。推导了基于H-B准则的抛物线型D-P准则，克服了H-B准则在数值计算中的困难。针对基于抛物线型D-P准则的有限元强度折减法，证明了折减抛物线型D-P准则材料参数的合理性。结合上述研究成果，分析了茨哈峡水电站右岸泄水边坡在天然状况下和泄水雾化状况下的稳定安全度。计算结果表明，该边坡在天然状况下是稳定的，但在泄水雾化状况下将会发生失稳。因此，需对该边坡采取工程处理措施，提高其稳定安全度，以防泄洪雾化失稳。
|
| 关 键 词： | 岩质边坡 稳定性分析 有限元强度折减法 抛物线型D-P准则 茨哈峡水电站 |
| 文章编号： | 1000-7598-（2007）07-1448-05 |
| 收稿时间： | 2006-10-26 |
| 修稿时间： | 2006-10-26 |
Stability analysis of rock slope based on parabola Drucker-Prager criterion |
| |
| HUANG Yi-sheng,LI Jian-lin,CHANG Xiao-lin.Stability analysis of rock slope based on parabola Drucker-Prager criterion[J].Rock and Soil Mechanics,2007,28(7):1448-1452. |
| |
| Authors: | HUANG Yi-sheng LI Jian-lin CHANG Xiao-lin |
| |
| Institution: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Institute of Geological Hazards Mitigation, China Three Gorges University, Yichang 443002, China |
| |
| Abstract: | In the light of parts of tension-shear yield area inside a rock slope, Hoek-Brown criterion is more suitable for the stability analysis of the rock slope than Mohr-Coulomb criterion because Hoek-Brown criterion can be used to analyze both tension-shear yield and compression-shear yield of the rock slope. Parabola Drucker-Prager criterion based on Hoek-Brown criterion is deduced to get rid of the difficulty which Hoek-Brown criterion is hard to use in numerical analysis, In order to use strength reduction FEM based on parabola Drucker-Prager criterion for the stability analysis of a rock slope, the rationality of reducing material parameters of parabola Drucker-Prager criterion is proved. With these research results, the paper analyses the stability of the slope on the right bank of Cihaxia Hydropower Station under natural and atomization conditions due to spillway discharging. The result indicates that the slope is stable under natural condition, but unstable on atomization condition. Therefore, the engineering measures are necessarily taken to enhance stability of the slope against instability under the atomization condition due to spillway discharging. |
| |
| Keywords: | rock slope stability analysis strength reduction FEM parabola Drucker-Prager criterion Cihaxia Hydropower Station |
| 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 |
