| 粗石英砂层厚度及倾角对核废物处置库顶盖毛细屏障效应的影响 |
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| 引用本文： | 霍丽娟,杨改强,杨国义,何秋生,李一菲,赵世平,钱天伟.粗石英砂层厚度及倾角对核废物处置库顶盖毛细屏障效应的影响[J].环境污染与防治,2009,31(4). |
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| 作者姓名： | 霍丽娟 杨改强 杨国义 何秋生 李一菲 赵世平 钱天伟 |
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| 作者单位： | 太原科技大学环境科学研究所,山西,太原,030024 |
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| 基金项目： | 国家自然科学基金，山西省自然科学基金，山西省高校青年学术带头人项目，山西省人才引进与开发专项基金，太原科技大学校青年基金 |
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| 摘 要： | 毛细屏障作为核废物处置库顶盖的工程屏障之一,已经在国内外得到了广泛应用.采用箱体实验方法,研究了非饱和稳定流条件下粗石英砂层厚度和倾角对毛细屏障效应的影响.结果表明,随着粗石英砂层厚度的增大,水分的相对绕流量增大,毛细屏障效应增强;随着粗石英砂层倾角的增大,其表面积水减少,水的横向流动能力增强,毛细屏障效应增强.
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| 关 键 词： | 毛细屏障 基质势 绕流 穿透 |
Effects of thickness and slope of the coarse layer cover of radioactive waste disposal site on its capillary barrier function |
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| Huo Lijuan,Yang Gaiqiang,Yang Guoyi,He Qiusheng,Li Yifei,Zhao Shiping,Qian Tianwei.Effects of thickness and slope of the coarse layer cover of radioactive waste disposal site on its capillary barrier function[J].Environmental Pollution & Control,2009,31(4). |
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| Authors: | Huo Lijuan Yang Gaiqiang Yang Guoyi He Qiusheng Li Yifei Zhao Shiping Qian Tianwei |
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| Institution: | Institute of Environmental Science;Taiyuan University of Science and Technology;Taiyuan Shanxi 030024 |
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| Abstract: | Many nuclear waste disposal site covers are constructed to provide desired capillary barriers function that reduces water infiltration. Typically a fine-grain soil layer is placed on a coarse layer cover to provide the desired capillary barrier function. Upon reaching the fine-coarse interface,infiltrating water would be held at the interface by capillary forces and move laterally along the slope instead of downward into the coarse layer. Steady state unsaturated infiltration tests were conducted to determi... |
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| Keywords: | capillary barrier suction head dispersive flow breakthrough |
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