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在系统分析研究区地质及水文地质条件的基础上,运用地下水模型FEFLOW建立了研究区垂向二维非均质流体的对流-弥散数学模型,并通过水位和水质的动态观测资料对模型进行了识别和校正。运用识别后的模型模拟了有填海和无填海两种工况下的海水入侵过程。结果表明:地下水开采是海水入侵的主要原因;在开采地下水条件下,研究区有无填海工程对海水入侵的影响不大,研究区填海工程对海水入侵有一定的阻挡作用,但作用不是很显著。
Based on the systematic analysis of geological and hydrogeological conditions in the study area, a convective-dispersion mathematical model of vertical two-dimensional heterogeneous fluids in the study area was established by using groundwater model FEFLOW. The model was carried out by dynamic observation of water level and water quality Identify and correct. The discriminated model is used to simulate seawater intrusion under both reclamation and non-reclamation conditions. The results show that groundwater exploitation is the main reason of seawater intrusion. Under reclaimed groundwater conditions, the reclamation works in the study area have little effect on seawater intrusion, and the reclamation works in the study area have a certain barrier to seawater intrusion, but the effect is not Very significant.