| 裂隙土等效连续介质的渗透张量及表征单元体积 |
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| 引用本文： | 李锦辉,张利民,雷卫东.裂隙土等效连续介质的渗透张量及表征单元体积[J].西北地震学报,2011,33(Z1). |
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| 作者姓名： | 李锦辉 张利民 雷卫东 |
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| 作者单位： | 1. 哈尔滨工业大学深圳研究生院土木与环境学院,广东深圳,518055
2. 香港科技大学土木与环境工程系,香港 |
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| 基金项目： | 国家自然科学基金(51009043); Research Grants Council of the Hong Kong SAR(622207); 广东省自然科学基金(8151805705000001) |
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| 摘 要： | 裂隙土的渗透特性是裂隙土边坡稳定性分析中重要的参数。文中通过分别考虑随机裂隙网络和土体本身的渗透性,推导裂隙土的渗透系数,并用张量的形式表示渗透系数的各向异性。同时建立了确定裂隙土表征单元体积的准则,为应用等效连续介质模型提供了基础。结果表明裂隙土的渗透系数大于裂隙网络和土体的渗透系数,其渗透方向取决于裂隙网络的渗透方向。算例中裂隙土的表征单元体积大约是裂隙长度平均值的5倍。
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| 关 键 词： | 裂隙土 渗透系数 张量 表征单元体积 等效连续介质模型 |
Permeability Tensor and Representative Elementary Volume of Equivelent for Cracked Soil |
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| LI Jun-hui,ZHANG Li-min,LEI Wei-dong.Permeability Tensor and Representative Elementary Volume of Equivelent for Cracked Soil[J].Northwestern Seismological Journal,2011,33(Z1). |
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| Authors: | LI Jun-hui ZHANG Li-min LEI Wei-dong |
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| Affiliation: | LI Jun-hui 1,ZHANG Li-min 2,LEI Wei-dong 1(1.Shenzhen Graduate School Harbin Institute of Technology,Guangdong Shenzhen 518055,China,2.The Hong Kong University of Science and Technology,Hong Kong) |
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| Abstract: | Permeability is an important parameter for analysis on stability of slopes.The permeability of a cracked soil is derived by considering the permeability of a random crack network and of soil mass separately in this paper.A permeability tensor is used to demonstrate the anisotropy of the cracked soil.In addition,a criterion is established to determine the representative elementary volume(REV) of the cracked soil.Results show that the value of permeability of the cracked soil is larger than those of the crack... |
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| Keywords: | Cracked soil Permeability Tensor Representative elementary volume Equivalent continuum model |
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