Estimation of the Characteristics of Cikareteg Landslide Based on Electric Resistivity Tomography Rofiq Fadillah Awal(a*), Selly Feranie(a), Adrin Tohari(b), Dadan Dani Wardhana
(a) Laboratory of Earth and Space Science, Physics Department FPMIPA UPI, Jl. Dr. Setiabudhi No. 229, Bandung
(b) Research Center for Geotechnology (P2G-LIPI), Komplek LIPI Jl. Sangkuriang, Bandung
*Rofiqawal7[at]gmail.com
Abstract
A toll road segment in Bogor, West Java, was constructed in an old landslide zone in the Cikareteg area. Knowledge of the slip surface is necessary to mitigate the hazard associated with the possible reactivation of the landslide. This paper presents the results of the resistivity tomography survey to estimate the depth and geometry of the landslide slip surface using dipole-dipole configuration. Based on the resistivity tomography, the landslide is estimated to involve a non-circular sliding plane located within a thick soil layer with low resistivity at a depth of less than 10 m below the slope surface. Thus, a thick landslide material still exists in the vicinity of the bridge, posing an imminent hazard to the toll road.
