高密度电法在变质岩山区找水中的应用研究

Study on Application of High Density Electrical Method in Looking for Water in Metamorphic Rocky Mountain Area

高密度电法具有低成本,高效率,方便解译等特点,它在水文地质调查中具有到广泛应用,尤其在地质环境复杂、地下水资源缺乏地区。大别山地区是变质岩集中区域,同时也是我国重要的生态功能区,有着地质结构复杂、生态环境脆弱的特点,是水文地质、环境地质研究的重点区域。本文以大别山连片贫困区1:5万水文地质调查中的找水为实例,采用高密度电法,解译出目标找水靶区的电阻率剖面和地质断面,并结合地球物理特征、工区布置、钻探验证等,说明高密度电法在变质岩山区寻找富水构造效果显著,能作为变质岩山区找水的有效方法。

High density electrical method has the characteristics of low cost,high efficiency and convenient interpretation.It is used in hydrogeological survey.It has a wide range of applications,especially in areas with complex geological environments and lack of groundwater resources.TheDabie Mountains area is a metamorphic rock concentration area and an important ecological function area in China.It has the characteristics of complex geological structure and fragile ecological environment.It is a key area for hydrogeological and environmental geological research.In this paper,the resistivity profile and geological section of the target water-seeking target area are interpreted by using high-density electric method with the example of the hydrogeological survey of 1:50 000 in the poverty-stricken area of the Dabie Mountain,and the working area is arranged in combination with the geophysical characteristics.The verification of drilling shows that the high density electrical method is effective in finding water-rich structures in metamorphic rock areas and can be used as an effective method to find water in metamorphic rock mountain areas.