松花江佳木斯市区段江水对地下水补给程度分析

采用MODFLOW软件,在佳木斯市区建立了地下水流模拟模型。在地下水开采井正常运行和全部关闭两种情况下,分别对现状年和设计典型年,运用所建模型求解松花江水对研究区地下水的补给量,分析补给程度,从一个侧面探讨江水污染对地下水水质的影响程度。计算结果表明:从求解的年内总量上,通过关闭开采井的方式能够抑制近1/4的江水侧渗补给;关闭开采井初期并不能迅速降低江水的侧渗补给量。

Recharge of Jiamusi downtown section of Songhua River to the groundwater

A numerical model was established for groundwater flow in Jiamusi City based on MODFLOW software.Two cases that all of the pumping wells were in operation or closed were simulated,and the recharge quantity of Songhua River to groundwater in present year and the design typical year was calculated.The recharge degree and the influence of river pollution on the groundwater quality were discussed.Results indicate that about 1/4 of river water to the groundwater can be controlled per year by closing of the wells,however,the recharge of river water to groundwater would not decreased rapidly during the early period after the closing of the wells.