地下水密度流边界元法数值分析及防渗墙抗盐水入侵效果

THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY Pub Date : 1900-01-01 DOI:10.5917/JAGH1959.27.51

K. Fujino

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引用次数: 1

摘要

据报道，由于沿海地区水井过度排放新鲜地下水和降水不足导致地下水位下降，咸水侵入内陆，使含水层受到盐的污染。因此，计算含盐地下水的运动具有重要意义。本文讨论了用边界元法对地下水密度流进行数值分析的公式，用于研究防止盐水入侵问题。对非承压地下水的定常问题和承压地下水的非定常问题进行了数值分析。得到了非定常数值解的稳定性，计算了每一时间步长的特征值实部。对于淡水和咸水界面的行为，数值解与实验结果吻合较好。并对防渗墙在防盐水入侵中的作用进行了评价。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Numerical Analysis of Groundwater Density Flow with Boundary Element Method and the Effect of Impervious Wall against Salt Water Intrusion

It has been reported that the salt groundwater invade inland and the aquifers become contaminated with salt as a result of over discharges of fresh groundwater by the wells in coastal areas, and the drawdown of groundwater level by the shortage of precipitation. Consequently, it is significant to calculate the movement of salt groundwater.
In the present paper, for the study of preventation of salt water intrusion, the author discusses the formulation for a numerical analysis of the groundwater density flow with the boundary element method. Numerical analysis was carried out for the following two cases, (1) the steady problem in -unconfined groundwater, (2) the unsteady problem in confined groundwater.
The stability of unsteady numerical solution was obtained to calculate the real part of eigen values every time step. About the behavior of fresh and salt water interface, the numerical solutions show good agreement with the experimental results.
Also, the author estimated the effect of the impervious wall for countermeasure against salt water intrusion.

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THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY

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