存在截渗墙情况下地下咸水恢复的优化方案

本文首先分析了咸水分布区的自然地理和水文地质条件，然后对研究区的水文地质条件进行了概化，建立了相应的地下水水量和水质的数值模型，最后通过地下水模拟软件Visual—MODFLOW3.1对存在截渗墙情况下的不同咸水恢复方案进行了数值分析。研究结果表明。单纯的抽水方案对于高浓度咸水的去除非常有效，但是低浓度咸水残留量较大；抽水——注水方案对高低浓度的去除效果都比较好；而抽水优化方案对高浓度和低浓度的咸水的去除更加经济、快速和彻底。

Optimizing Scheme to Restore the Saline Groundwater under the Condition of Impenetrable Wall

Based on analyzing and approximating the graphic and hydrogeologic conditions of the saline water distribution area, a quantity and quality solute numerical model is set up by generalizing the hydrogeologic conditions of the study area. Then different restoration schemes considering the impenetrable wall are put forward, and are simulated and analyzed by groundwater simulation software-Visual-MODFLOW 3. 1. The simulating results indicate the pumping scheme is only efficient to remove the high concentration saline water, while the pumping-recharglng one has a high efficiency both to the high and low concentration saline water, while the optimizing one is more economical, guieker and more exhaustiveced.