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通过对硇洲岛地质和水文地质条件的综合分析,建立了本研究区三维地下水数值模型,并获取了相关含水层参数。从而建立海水入侵数值模型,对硇洲岛在不同开采条件下的海水入侵趋势进行了模拟预测,结果表明,减少开采量能减缓硇洲岛海水入侵;在满足当地供水需求的前提下,减少浅层水开采量,在远离沿海区域的中部地区适当增加中层水开采量的开采方案优于现状开采条件下的方案。本研究也为减缓海水入侵提供了相关科学依据。
Through the comprehensive analysis of the geological and hydrogeological conditions of Weizhou Island, a three-dimensional numerical model of groundwater was established in this study area, and relevant aquifer parameters were obtained. The numerical model of seawater intrusion is established to simulate the trend of seawater intrusion in Weizhou Island under different mining conditions. The results show that reducing the mining volume can slow down the seawater intrusion in Weizhou Island. On the premise of meeting the local water supply demand, The exploitation scheme of stratified water extraction and appropriate increase of middle water extraction in the central area away from the coastal area is superior to the scheme under the current mining conditions. This study also provides relevant scientific evidence for slowing seawater intrusion.