IDENTIFICATION DEPTH AND POSITION SLIP PLANE ON SLOPING LAND IN CIPATAT, WEST BANDUNG USING 2D RESISTIVITY METHOD

Abstract

Slip plane Is a plane that is the basis for the occurrence of land movement and is characterized by materials that have high resistivity values. It can also be said that this slip plane is a plane that retains water. This study aims to identify the position and depth of the slip plane using the resistivity geoelectric method on 5 tracks with 5 m electrode spacing located in Cipatat sub-district, West Bandung. This study uses dipole-dipole and wenner configurations then processed using Res2dinv software. This study chose the wenner configuration (error 1.7 to 5.3%) as a reference for further interpretation, because the error value obtained is better than the dipole-dipole configuration (error 1.8 to 5.7%) for slip plane identification. The results of the study show that the depth of the slip plane on each track varies between (7 to 15 m). 3 of the 5 tracks show the presence of slip planes (L1H1, L2H1, and L1H6) with resistivity values varying between (4.16 to 36.7 Ohm.m) which are suspected to be clay, sandy clay, and tuff. The slope angles obtained vary between (5° to 23°). Estimation of safe and landslide-prone zones and the level of landslide danger in this study can be determined based on the slope angle and depth of the slip plane obtained on each track.