Abstract
In order to promote infrastructure management that takes into consideration the challenging social and economic conditions and the occurrence of many natural disasters in recent years, it is necessary to define what infrastructure management should be like from the viewpoints of both risk management and asset management. From these viewpoints, this paper proposes a GIS-based slope risk evaluation system implemented as part of the road slope disaster prevention integrated management system, and shows an example of a system applied to the evaluation of road slopes in a real road network. The slope risk evaluation system is a GIS-based package of analysis systems for a number of tasks including the automatic acquisition of slope data from three-dimensional topographic data, the calculation of the annual probability of rain-induced failure of each slope, and road network risk evaluation based on detour loss. The slope risk evaluation system is a promising tool for assisting in decision making that uses the risk evaluation technique for road slope disaster prevention. This study aims to define the direction of a road slope disaster prevention integrated management system that combines asset management and risk management.
