Determining Maintenance Project Priority Based on Disaster Risk Assessment: Case of TOPSIS Applications

Recently, damage to steep slopes in Korea has been increasing because of abnormal regional torrential rains. The Ministry of Public Administration and Security amended the criteria for a comprehensive plan for natural disaster reduction and selected a technique for determining investment priorities. However, it did not properly reflect the calculation of the damaged area, disaster risk zone, and amount of damage. In this study, the technique for order of preference by similarity to ideal solution (TOPSIS), a decision-making technique considering multiple criteria that are widely used in various fields, was applied to derive the results of priority selection for collapse risk zones. As a result, problems were derived through a comparative analysis of the results of existing investment priority techniques. Furthermore, a priority selection plan for the collapse risk zone improvement project was developed based on the Disaster risk assessment evaluation indicators, and a comprehensive natural disaster plan report was created.