Abstract
Hazard maps support effective disaster management of rock mass failure. In this study we compiled reliability prediction charts of hazard areas caused by rock mass failure debris, which are the basis of hazard maps. In addition to the predicted debris hazard areas, we took into account other factors such as rock slope stability and the effects of countermeasures obtained from published data to prepare hazard maps for risk assessment. Applying map-based risk assessment to rock mass failure allowed us to visually identify risks by size, location, and section, consequently enabling reasonable logical judgment from a broad perspective in setting priorities for countermeasures and inspections against rock mass failure.
