Management and Assessment of Tunnel Construction Projects risks Using Combinatorial Method of the VIKOR and Analytical Hierarchy process

The project management involves time management, cost, quality and risk of the project. Each project has time constraints, cost and quality. Since each of these constraints have a potential for risk, therefore, project risk management is essential. Increasing the cost and expanding the scale of projects on the one hand and increasing the uncertainty and risk of projects on the other hand has made risk management and assessment important. The purpose of risk management and assessment is to identify and evaluate accidental events that can have a positive or negative impact on project goals. In this study, a hybrid model for managing and evaluating the risks associated with tunneling operations using Multiple-criteria decision making methods is presented. After identifying the risks and performing the Delphi process, Risk Breakdown Structure (RBS) was used to categorize the risks , Analytical Hierarchy process (AHP) has been used for risk weighting, and VIKOR multiple-criteria decision making has been used to determine the risk ratings. The results showed that among the risks, the risk of manpower, Economic risk and management Risk were classified as critical risks.