Identification of Subsurface Cavities by Geoelectric Method

Abstract

Research has been conducted on the identification of subsurface cavities using geoelectric methods. Subsurface cavity is a natural phenomenon that commonly occurs in areas that have limestone rocks. The existence of underground cavities can result in the occurrence of ablesan in the form of sinkholes. Sinkholes have occurred in several places with varying sizes. Sinkhole as a result of underground cavity, this cavity is very dangerous to the building above it. For this reason, cavity identification needs to be done before starting construction. In this study, cavity identification was carried out using geoelectric methods. The research took three different locations, two where voids were already visible and one as a case study. The result is that the geoelectric method can detect voids very clearly. The gelistrik method is highly recommended as one of the methods to detect voids in the subsurface.