Core Points - The Zhijiang Road water supply corridor and road improvement project has successfully completed its tunneling phase, marking a significant engineering achievement in traversing five national key cultural heritage sites [2][14][16] - The project faced complex geological conditions and stringent vibration control requirements to protect historical structures, with a vibration threshold set at 0.2 mm/s [5][11][16] - Advanced technologies such as large-diameter slurry balance shield tunneling and real-time monitoring systems were employed to ensure safety and minimize impact on surrounding heritage sites [10][16] Geological and Engineering Challenges - The geological conditions included 15 different soil layers with varying strengths, complicating the tunneling process, particularly in the White Pagoda section, which had a high quartz content [3][11] - The project required meticulous planning and execution to avoid damage to sensitive structures, with a minimum horizontal distance of 13.5 meters from the Qiantang River Bridge and 3.3 meters from the underground metro line [11][12] Monitoring and Protection Measures - Continuous monitoring systems were established to track vibrations and structural integrity, ensuring that any deviations from the set thresholds were promptly addressed [7][9][16] - The project team implemented a combination of sensors to minimize intervention on the historical structures while maintaining rigorous monitoring standards [8][9] Future Implications - The successful completion of the project is expected to enhance traffic capacity by 1.5 times and improve the reliability of the city's water supply system [16][17] - The engineering techniques and monitoring practices developed during this project may set new standards for future infrastructure projects in culturally sensitive areas [16][18]