Application of the highdensity electrical resistivity method to karst geological exploration in Quanhe, Laiwu City

Karst can produce large undulating surfaces , as well as other geological features such as dissolution belts, karst caves, and soil cavities, which can lead to geologic hazard affecting the security of buildings. This paper briefly introduces the basic theory and features of the highdensity Electrical Resistivity (ER) method which can be applied to exploration karst areas. Then a case study in Quanhe, Laiwu City is presented. Based on the interpretation of 2D image of the apparent ERs and their anomalies such as ER high and ER low , this paper infers the range, size and burial depth of karst in the study area, which accord with the results of exploratory drilling. The results of this work provide an important reference for the prevention and management of karst collapse geohazards in this region.