高密度电阻率法探测海水入侵咸淡水界限初步调查研究——以莱州湾为例

Preliminary Survey and Study on Exploring Saltwater Freshwater Interfaceof Saltwater Intrusion by Using the High-density Resistivity Method：A Case Study on Laizhou Bay

本文从理论上阐述了高密度电阻率法探测海水入侵界限的可行性,对该方法在莱州湾地区实例分析表明,根据高密度电阻率法反演视电阻率断面图勾划出来的咸淡水分界线与水文地质调查结果基本吻合,说明了该方法在莱州湾地区具有较好的有效性和可行性。笔者还利用视电阻率断面图确定了咸淡水水体在平面分布情况和垂向变化情况,为查清海水入侵等环境地质问题提供可靠的基础资料。该方法在探测海水入侵方面具有简单、快速、低廉、无破坏性原位探测等特点,其应用前景可观,值得推广。

This article expounds the oretically the feasibility of exploring saltwater intrusion with the high-density resistivity method, through effect analysis of an example in Laizhou bay area, it shows that the result of saltwaterfreshwater interface with the inversion section of the high-density resistivity method is almost consistent with the result of hydrogeological survey. This method is effective and feasible in Laizhou bay area. Authors use the cross section of apparent resistivity to identify boundary of saltwater and freshwater, horizontal distribution of fresh-salt water bodies and vertical variation, this method provides reliable basic data for environmental and geological problems.The application of the high-density resistivity method in the exploration of seawater intrusion has the advantages of simple, fast, inexpensive and non-destructive field exploration, it has very good prospects and worth spreading and popularizing.