高密度电法在莱州湾海水入侵调查中的研究与应用

利用高密度电法研究海水入侵是一种简单、高效的方法,但目前在国内外应用较少。该方法依据水中Cl-浓度增加视电阻率降低的地球物理前提,在莱州湾地区不同地质条件区域,选定典型剖面进行测试,确定了Cl-达到250 mg/L时的视电阻率特征值。基于以上条件,在莱州湾地区布设16条高密度电法剖面,成功的划定了莱州湾地区海水入侵界面,说明高密度电法可作为检测海水入侵的方法之一,为环评、灾害治理等提供技术支持。

Research and application of high-density resistance method in seawater invasion investigation of Laizhou Bay

It is a simple and efficient method to study seawater intrusion by using high density resistivity method, but it is seldom used at home and abroad. The method according to the concentration of Cl- in the water increase apparent resistivity decreases as the prerequisite of Geophysics, different geological conditions of a region in the Laizhou Bay area selected typical sections were tested, determine the Cl- to 250 mg/L of apparent resistivity values. Based on the above conditions, in Laizhou Bay area layout 16 high density electrical profiles, the success of delineation of the seawater intrusion in Laizhou Bay Area interface, indicating that the high density resistivity method as one of the seawater intrusion detection method, for environmental impact assessment, disaster management to provide technical support.