| 入渗条件下某非饱和土坡稳定性的动态分析 |
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| 引用本文： | 周宏,徐祖阳,郭炳跃.入渗条件下某非饱和土坡稳定性的动态分析[J].地质学刊,2007,31(3):254-257. |
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| 作者姓名： | 周宏 徐祖阳 郭炳跃 |
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| 作者单位： | 浙江电力设计院华隆岩土工程有限公司 浙江杭州310014(周宏)，江苏省地矿生态环境研究中心 江苏南京210018(徐祖阳，郭炳跃) |
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| 摘 要： | 土坡在进行稳定性计算时传统的极限平衡分析方法对于同一土体多采用单一的土体强度参数。近年来,人们致力于土体含水量与抗剪强度之间的关系研究,试验证明不同的含水量下土体的抗剪强度指标有很大变化。在连续的降雨条件下,在土体内部形成渗流改变土体的含水量会引起抗剪强度的变化,随时间和渗入量的不同土坡稳定性将随之改变。基于降雨条件下边坡饱和—非饱和渗流计算,利用土水分离土条自重法计算在不同时刻土坡的动态稳定系数,同时分析潜在滑动面的变化规律。
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| 关 键 词： | 土坡 非饱和 入渗 抗剪强度 滑动面 |
| 文章编号： | 1003-6474（2007）03-0254-04 |
| 收稿时间： | 2006-08-24 |
| 修稿时间： | 2006年8月24日 |
Stability dynamic analysis for one unsaturated soil slope under infiltration |
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| ZHOU Hong,XU Zu-yang,GUO Bin-yue.Stability dynamic analysis for one unsaturated soil slope under infiltration[J].Jiangsu Geology,2007,31(3):254-257. |
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| Authors: | ZHOU Hong XU Zu-yang GUO Bin-yue |
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| Institution: | 1. Hualong Geotechnical Engineering Ltd, Electric Power Design Institute, Hangzhou 310014, China ;2. Ecological Environment Research Center, Jiangsu Bureau of Geology and Mineral Resources, Nanjing 210018, China |
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| Abstract: | The traditional limiting equilibrium method is used in calculating the slope stability in terms of same soil and single shear strength.Researchers have devoted to the study of relationship between moisture content and shear strength in recent years,shear strength varied greatly when moisture content changed,and was testified by trial.The soil shear strength will change with moisture content variation for water infiltration under continuous rainfall condition and the soil slope stability coefficient is also changed.The dynamic stability coefficients and the regularity of potential slip surface are obtained based on the saturated-unsaturated seepage calculation and the use of water separation from soil for slice weight calculation. |
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| Keywords: | Soil slope Unsaturated Infiltration Shear strength Sliding surface |
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