Development of Disaster Risk Index for Evaluating the Natural Disaster Hazards of High-speed Railroad Facilities

Although efforts to quantify natural disasters to reduce disaster risk levels have been actively made, minimal research on railway facilities has been performed in Korea to date. In this study, to quantify disaster risk levels of natural disasters, such as hurricanes and earthquakes, a disaster risk index for high-speed railway facilities is presented, and natural disaster levels of domestic high-speed railway facilities are evaluated. The disaster risk index considers the four main factors including of hazard, exposure, vulnerability, and emergency response and recovery capability, and each main factor is composed of indicators that characterize that factor. Disaster risk indices are estimated for domestic high-speed railway lines including Gyeongbu, Honam, Gyeongjeon, Jeolla, Gangneung, and SRT lines, and they are quantified for regions determined around 51 stations. The weight for each main factor and indicator is determined using Delphi and the principal component analysis method, respectively. Keywords: Disaster Risk, Disaster Risk Index, High Speed Railroad Facilities