Research on risk prevention and control measures for immersed tube tunnel projects

This paper establishes an effective risk analysis and control system based on the characteristics of cross-sea immersed tube tunnel construction. Taking immersed tube tunnel projects as an example, this study investigates risk prevention and control measures. Firstly, a matrix of membership degrees and fuzzy sets for risk factors at various stages of immersed tube tunnel projects is constructed, and their weights are calculated. Then, based on the fuzzy comprehensive evaluation method, the overall risk level for each stage of the project is calculated. Risk factors with higher weights are identified, as they indicate a greater likelihood of accidents. Control measures are proposed for these high-weight risk factors, and real-time control is implemented during the construction process of the immersed tube tunnel. Finally, this method and control measures are applied in an engineering case study to provide a theoretical basis for preventing major risks in engineering projects and for risk prevention and control in similar projects.