Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

Purpose: The objective of this study is to present practical implications for the safety management of mudslides by identifying risk factors for the earth retaining structure collapse at construction sites and comparing and analyzing the importance and execution of measures to prevent collapse. Method: 165 construction engineers were investigated for the cause and action of the earth retaining structure collapse, and the priority of risk factors for each construction stage was derived by applying the IPA (Importance-Performance Analysis) technique. Result: while the importance of the factors for improving the bidding and procurement stage system to reduce the risk of construction progress due to unreasonable attempts to reduce construction costs in the construction management process was very high, the execution was the lowest, indicating that improvement was urgent. In addition, the IPA analysis result suggested the specific direction of the management of preventing the collapse of the mudslides, which currently has 8 factors in need of maintenance (Quad II), 3 factors in urgent need of improvement (Quad II), 7 factors to be improved in the mid to long term (III quadrant), and 4 factors that can be maintained at the current level (IV quadrant). Conclusion: The results of this study suggest that systematic management and improvement of risk factors by stage is essential for preventing earth retaining structure collapse, and will be able to provide basic data for institutional supplementation and on-site execution to resolve differences between importance and performance.