高密度电法在水文地质调查中的应用研究——以江平圩幅为例

发布时间：2018-02-26 10:54

本文关键词： 高密度电法装置反演水文地质地下水钻孔　出处：《地球物理学进展》2017年02期 　论文类型：期刊论文

【摘要】：防城港地区地下水资源匮乏,季节性缺水尤其严重,为了查明优质的供水水源,我们选取高密度电法作为勘探手段.高密度电法是用物探手段进行水文地质调查的一种重要方法,以其工作效率高、施工简单以及推断解释准确等优点,在水文地质领域应用广阔.本文概述了高密度电法的基本原理、装置类型和数据处理流程,给出了电阻率反演的基本步骤.选取了典型砂岩地区的实测数据反演研究,并与钻孔资料进行了对比验证.结果表明:(1)利用高密度电法,能够较准确地获取区内地下水含水层的埋深、厚度、空间展布形态;(2)偶极-偶极装置比温纳装置具有较高的横向分辨率,更有利于进行水文地质调查;(3)圈定了典型的低阻异常区,验证了低阻异常区位于江平幅侏罗纪承压水储水构造层,出水量较大,验证了反演推断的有效性和可靠性.通过本次工作,说明了高密度电法进行水文地质调查的应用效果,查明了该区较大的一处供水水源,为该区水资源开发利用提供了参考依据.
[Abstract]:In Fangchenggang area, groundwater resources are scarce, and seasonal water shortages are especially serious. In order to identify high-quality water sources, The high density electrical method is an important method for hydrogeological survey by geophysical prospecting, which has the advantages of high efficiency, simple construction and accurate inference and interpretation. It is widely used in the field of hydrogeology. In this paper, the basic principle, device type and data processing flow of high density electrical method are summarized, and the basic steps of resistivity inversion are given. The results show that the depth and thickness of groundwater aquifers in the area can be obtained more accurately by using the high-density electrical method. The dipole-dipole device has higher lateral resolution than the Winner device, which is more favorable for hydrogeological survey and delineates the typical low-resistivity anomaly area. It is verified that the low resistivity anomaly area is located in the Jurassic confined water storage layer of Jiang Ping amplitude, and the water output is large, which verifies the validity and reliability of the inversion inference. Through this work, the application effect of high-density electrical method in hydrogeological survey is explained. A large water supply source in this area is found out, which provides a reference for the development and utilization of water resources in this area.
【作者单位】：中国地质调查局武汉地质调查中心;中国地质大学(武汉);
【基金】：中国地质调查局防城港地区水文地质工程地质调查评价项目(12120113004100)资助
【分类号】：P631.3;P641.7

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