基于砂质海岸带海水入侵模型试验分析研究

Study on Model Test and Analysis of Seawater Intrusion in Sandy Coastal Zone

经调查龙口市两面环海,东侧黄水河下南侧界河均可以作为已知流量边界,其南侧为低山丘陵区,可看作独立的水文地质单元。研究区北侧地下水的开采用于工业生产、西海岸地下水的开采用于农业生产,大量开采地下水形成降落漏斗,海咸水顺水力梯度内侵,两岸地下水均有咸化,因此,龙口市可以作为砂质海岸带地下水超采引发海水入侵的典型区,并对该区域进行了试验研究,共相关部门参考。

According to the investigation, both sides of Longkou city are surrounded by the sea, and the boundary river on the east side of Huangshui River on the south side can be taken as the known flow boundary. The south side of the boundary is a low hilly area, which can be regarded as an independent hydrogeological unit, saltwater is invaded along the force gradient and the groundwater on both sides is saline. The exploitation of groundwater in the north of the research area is used for industrial production, and the west for agricultural production, a large amount of groundwater is exploited to form descending funnels. Therefore, Longkou city can be regarded as a typical area of seawater intrusion caused by over-extraction of groundwater in sandy coastal zone, and a test study has been carried out in this area for reference by relevant departments.