Determination of the Effectiveness of Landslide Preventive Engineering Works Using the Electrical Resistivity Method in the Kushibayashi Landslide Area

Abstract

We carried out repeated surveys, using the electrical resistivity method, at each stage of a series of landslide preventive engineering works, as one means of making it possible to operate the necessary works in the most effective way when landslide preventive engineering works were required for the specific purpose of draining the underground water contained in the landslide area. Besides, by carefully weighing our surveyed results obtained at each stage of the preventive engineering works, we proceeded to determine the merits and demerits, or effectiveness, of preventive engineering works at each given stage of operation, and we tried to utilize our surveyed results obtained at given stages in deciding whether there is any necessity of making any adjustments or modifications for forthcoming preventive engineering works.