Based on the Dalian Bay Immersed Tunnel Project,the digital project is established to provide intelligent management methods for the operation and maintenance phase of the project.With the help of various sensor feedback data such as equipment monitoring and structural health monitoring,as well as video monitoring event analysis,the monitoring center can quickly and accurately grasp the real-time situation of immersed tunnels,timely detect and feedback civil engineering,mechanical and electrical problems,and various traffic emergencies.Through practical application over the past year,digital project has ensured the smooth operation of immersed tunnels and effectively assisted maintenance teams in various civil structure maintenance and electromechanical equipment maintenance work,improving the efficiency and quality of immersed tunnel operation and maintenance management.