| LNAPL在二维含水介质中运移规律的研究 |
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| 引用本文： | 宋超,刘财,张宇白,鹿琪.LNAPL在二维含水介质中运移规律的研究[J].世界地质,2014,33(3):708-715. |
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| 作者姓名： | 宋超 刘财 张宇白 鹿琪 |
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| 作者单位： | 1. 吉林大学 地球探测科学与技术学院，长春 130026; 2. 吉林大学 化学学院，长春 130012 |
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| 摘 要： | 为研究LNAPL(轻质非水相液体)污染物在均匀含水介质中的运移规律,本文建立微元模型推导出LNAPL在均匀含水介质中的对流--弥散方程。针对不同的介质模型,对二维对流--弥散方程运用差分法进行数值模拟,求其数值解。分析LNAPL污染物的运移特征,得出在均匀介质和非均匀层状介质中运移规律:LNAPL污染物在含水介质中的运移规律遵循对流--弥散方程,介质的弥散系数是影响LNAPL污染物运移的主要因素。
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| 关 键 词： | LNAPL 污染物 对流- - 弥散方程 有限差分 数值模拟 |
Pattern of LNAPL's migration and distribution in 2- D auriferous media |
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| SONG Chao,LIU Cai,ZHANG Yu-Bai,LU Qi.Pattern of LNAPL's migration and distribution in 2- D auriferous media[J].World Geology,2014,33(3):708-715. |
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| Authors: | SONG Chao LIU Cai ZHANG Yu-Bai LU Qi |
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| Institution: | 1. College of Geo- exploration Science and Technology，Jilin University，Changchun 130026，China; 2. College of Chemistry，Jilin University，Changchun 130012，China |
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| Abstract: | In order to study the pattern of Light Non- Aqueous Phase Liquid (LNAPL) contaminant''s migration and diffusion in homogeneous aqueous media，an infinitesimal model was set to derive the dispersion equation for LNAPL contaminant in homogeneous aqueous media． The authors built different media models，numerical simulate 2-D advection- dispersion equation with finite difference method to get numerical solution，and analyzed the features of LNAPL contaminant''s migration to get the pattern of LNAPL contaminant''s migration and diffusion in the homoge- neous media and homogeneous layered media． The pattern of LNAPL''s migration and distribution in auriferous fol- low the advection- dispersion equation，and the dispersion coefficient of media is the main factor that influences the migration of LNAPL''s contaminant． |
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| Keywords: | LNAPL contaminant advection- dispersion equation finite difference numerical simulation |
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