| 一维稳态渗流时非饱和土中的基质吸力分布 |
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| 引用本文： | 李顺群,赵少飞,王学志.一维稳态渗流时非饱和土中的基质吸力分布[J].岩土力学,2006,27(Z1):90-94. |
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| 作者姓名： | 李顺群 赵少飞 王学志 |
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| 作者单位： | 1.辽宁工学院 土木建筑系，锦州 121001；2.山东科技大学 土木建筑学院，青岛 266510 |
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| 基金项目： | 辽宁省教育厅科学研究计划资助（No.2004F105） |
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| 摘 要： | 首先对非饱和土中的土水势和干土吸水过程中土水势的变化进行了定性分析。然后利用水相连续性条件、广义Darcy定律及Gardner关于非饱和土导水系数和基质吸力的经验公式，建立了非饱和土一维稳态渗流情况下基质吸力沿深度变化的关系表达式，并利用差分方法对稳态入渗和稳态蒸发两种情况进行了求解。根据提出的方法，不仅可以方便地得到基质吸力沿深度的分布，而且可以求出水头和导水系数沿深度的变化。
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| 关 键 词： | 非饱和土 稳态渗流 基质吸力 导水系数 土水势 |
| 收稿时间： | 2006-05-25 |
Matric suction of unsaturated soils in one-dimensional steady flow |
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| LI Shun-qun,ZHAO Shao-fei,WANG Xue-zhi.Matric suction of unsaturated soils in one-dimensional steady flow[J].Rock and Soil Mechanics,2006,27(Z1):90-94. |
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| Authors: | LI Shun-qun ZHAO Shao-fei WANG Xue-zhi |
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| Institution: | 1. Department of Civil Engineering, Liaoning Institute of Technology, Jinzhou 121001, China;
2. School of Civil Engineering, Shandong University of Science and Technology, Qingdao 266510, China |
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| Abstract: | Potential energy of water phase in unsaturated soils and corresponding change during the process of water be soaked into initially completely dry soils are discussed qualitatively. Then, based on water phase continuity requirement, generalized Darcy’s law and Gardner’s empirical equation on relationship between coefficient of hydraulic conductivity and matric suction, formulas are established and solved by finite difference method to calculate matric suction in unsaturated soils along depth in the condition of one-dimensional steady flow, respectively for permeation and for evaporation. Not only matric suction, but also head and coefficient of hydraulic conductivity can be attained easily by the proposed method. |
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| Keywords: | unsaturated soil steady flow matric suction coefficient of hydraulic conductivity potential energy of water |
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