| 三峡库区滑带土抗剪强度参数的统计规律研究 |
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| 引用本文： | 李远耀,殷坤龙,柴波,张桂荣.三峡库区滑带土抗剪强度参数的统计规律研究[J].岩土力学,2008,29(5):1419-1424. |
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| 作者姓名： | 李远耀 殷坤龙 柴波 张桂荣 |
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| 作者单位： | 中国地质大学 工程学院，武汉 430074 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 收集和整理了近年来三峡库区地质灾害防治工程中近400处滑坡的勘察资料，采用地质分析和工程地质类比法，指出三峡库区内存在5类易滑地层。运用K-S有限比较法，对3 308组抗剪强度参数试验数据分类进行了拟合优度检验，发现5类易滑地层中滑坡滑带土的c、? 值一般均能接受正态和对数正态分布，但c值与? 值相比，最优分布服从对数正态分布者更多，而服从正态分布者更少。针对区内滑带土普遍含有碎石的显著特点，对? 值与碎石含量的相关关系进行了线性回归分析发现滑带土? 值与含石量呈现良好的正相关关系。
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| 关 键 词： | 三峡库区 易滑地层 滑带土 抗剪强度参数 最优分布 |
| 文章编号： | 1000-7598-(2008)05-1419-07 |
| 收稿时间： | 2006-11-16 |
| 修稿时间： | 2006年11月16 |
Study on statistical rule of shear strength parameters of soil in landslide zone in Three Gorges Reservoir area |
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| LI Yuan-yao,YIN Kun-long,CHAI Bo,ZHANG Gui-rong.Study on statistical rule of shear strength parameters of soil in landslide zone in Three Gorges Reservoir area[J].Rock and Soil Mechanics,2008,29(5):1419-1424. |
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| Authors: | LI Yuan-yao YIN Kun-long CHAI Bo ZHANG Gui-rong |
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| Institution: | Engineering Faculty, China University of Geosciences, Wuhan 430074, China |
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| Abstract: | Data about 400 landslides in Three-George reservoir area were collected and summarized in recent years. It is concluded that there are five types of sliding-prone strata in reservoir area on the basis of geologic analysis and engineering geology analogy analysis. Through K-S finite contrast method, test of goodness of fit was respectively carried out on 3 308 groups of shear strength parameters; and the results showed that distribution forms of parameters c and ? are normal distribution and logarithmic normal distribution. The optimum fits of probabilistic models of c are mainly logarithmic normal distribution. As there are gravels in soil in landslide zone, linear regression analysis was carried out between the gravel content and the parameter ? of soil in landslide zone and the results indicated a well positive correlation relationship. |
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| Keywords: | Three Gorges Reservoir area sliding-prone strata soil in landslide zone shear strength parameter optimum fit of probabilistic model |
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