| 降雨条件下非饱和土中污染物迁移的数值模拟 |
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| 引用本文： | 左自波,张璐璐,王建华.降雨条件下非饱和土中污染物迁移的数值模拟[J].地下空间与工程学报,2011,7(Z1):1347-1352. |
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| 作者姓名： | 左自波 张璐璐 王建华 |
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| 作者单位： | 上海交通大学船舶海洋与建筑工程学院,上海,200240 |
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| 基金项目： | 国家自然科学基金资助项目(50809038)和(41172252); 教育部博士点基金资助项目(2008024811128); 海洋工程国家重点实验室自主研究课题(GKZD010053-3) |
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| 摘 要： | 利用溶质传递方程与非饱和土非稳态渗流方程联立耦合,建立了非饱和土污染物迁移模型.采用有限元数值分析的方法,模拟了土体非饱和带中污染物在降雨条件下的迁移过程,研究了无降雨、连续降雨和间断降雨条件下土体非饱和带中孔隙水压力和含水量变化以及污染物的迁移规律.研究结果表明,非饱和带污染物浓度随着时间增加逐渐增大,达到峰值后逐渐...
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| 关 键 词： | 非饱和土 降雨 污染物 迁移规律 数值模拟 |
Numerical Simulation of Contaminants Transport in Unsaturated Soils under Rainfall |
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| Zuo Zibo,Zhang Lulu,Wang Jianhua.Numerical Simulation of Contaminants Transport in Unsaturated Soils under Rainfall[J].Chinese Journal of Underground Space and Engineering,2011,7(Z1):1347-1352. |
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| Authors: | Zuo Zibo Zhang Lulu Wang Jianhua |
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| Affiliation: | Zuo Zibo,Zhang Lulu,Wang Jianhua(School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiaotong University,Shanghai 200240,China) |
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| Abstract: | A model for contaminant transport in unsaturated soil is established based on the coupled governing equations of solute transport and transient flow in unsaturated soil.Numerical analyses are performed to investigate the effects of rainfall on the variation of pore water pressure,water content and the contaminant transport in vadose zone.In this study,three rainfall conditions are considered: no rain,continuous rainfall with various intensities,and a discontinuous rainfall.It is found that the contaminant c... |
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| Keywords: | unsaturated soils rainfall contaminants transportation rule numerical modeling |
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