| 蓄水对三峡库区土石混合体直剪 |
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| 引用本文： | 李维树,丁秀丽,邬爱清,熊诗湖.蓄水对三峡库区土石混合体直剪[J].岩土力学,2007,28(7):1338-1342. |
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| 作者姓名： | 李维树 丁秀丽 邬爱清 熊诗湖 |
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| 作者单位： | 1. 长江科学院,水利部岩土力学与工程重点实验室,武汉,430010;长江科学院重庆岩基研究中心,重庆,400014
2. 长江科学院,水利部岩土力学与工程重点实验室,武汉,430010;长江科学院岩基研究所,武汉,430010 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金 |
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| 摘 要： | 在三峡库区滑坡体中大量存在的土石混合体是一种不同于土和岩体的高度非均质不连续体。基于三峡库区水位涨落将引起土石混合体含水率变化的特点,研究了土石混合体在不同含水状态下直剪强度参数的变化规律,并在大量的试验基础上建立了c,φ值与含水率之间的关系式,得出了不同碎石含量下c,φ值随着含水率变化的弱化公式,为评价三峡库岸稳定与治理提供了量值依据。
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| 关 键 词： | 三峡库区 土石混合体 直剪强度参数 含水率 弱化程度 |
| 文章编号： | 1000-7598-（2007）07-1338-05 |
| 收稿时间： | 2006-02-23 |
| 修稿时间： | 2006-02-23 |
Shear strength degeneration of soil and rock mixture in Three Gorges Reservoir bank slopes under influence of impounding |
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| LI Wei-shu,DING Xiu-li,Wu Ai-qing,XIONG Shi-hu.Shear strength degeneration of soil and rock mixture in Three Gorges Reservoir bank slopes under influence of impounding[J].Rock and Soil Mechanics,2007,28(7):1338-1342. |
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| Authors: | LI Wei-shu DING Xiu-li Wu Ai-qing XIONG Shi-hu |
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| Institution: | 1. Geomechanics and Engineering Key Laboratory of the Ministry of Water Resources, Yangtze River Scientific Research Institute, Wuhan 430010, China; 2. Research Center for Rock Foundations, Yangtze River Scientific Research Institute, Chongqing 400014, China; 3. Department of Rock foundations, Yangtze River Scientific Research Institute, Wuhan 430019, China |
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| Abstract: | Soil and rock mixture is a kind of highly inhomogeneous and noncontinuous material which is different from soil and rock mass, being widely distributed over the Three Gorges Reservoir bank slopes. Considering that the water fluctuation of the reservoir would cause soil water content to change, the law, under which the shear strength parameters for soil and rock mixture vary in accordance with water content's varying, is studied. The relationship among c, ? and water content of the mixture with different macadam contents is established based on numerous tests. It could be a quantized basis for evaluating and enhancing the stability of the Three Gorges Reservoir bank slopes. |
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| Keywords: | Three Gorges Reservoir soil and rock mixture shear strength parameters water content softening degree |
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