Recently, intensive rainfalls have been becoming heavier than past, and, therefore, landslide disasters have been often occurring in many area, and damage of various facilities and lives have been large. The slope failure disasters occurred by the heavy rainfall that typhoon 9 caused at western and northern area in Hyogo prefecture in 2009. Spatial and temporal prediction of landslides is important to diminish the damage by such landslides, and it is necessary to gather the information of dangerous situation for the evacuation of the habitants. The real]time type hazard system has been constructing at Rokko mountain area in Hyogo prefecture from 2007, and it have been operating from April 2010. In this system, the prediction method of probability of failure occurring, using digital elevation model that Okimura and Ichikawa suggest, is installed, and the data of topography, geotechnical information, rainfall are used to calculate the safety factors of each cell that change real]timely at heavy rainfall. As the predicted results have been evaluated by the actual data of landslides caused by the heavy rainfall in 1967 July, the validity of this model has been showed enough. In this paper, the function and performance of this system are showed.

Key wordsFheavy rainfalls, slope failure, real]time type hazard system, prediction information, evacuation