Shanghai Jiangpu Road cross - River tunnel officially realized the east - west double line through

On July 26, the fishtail knife of the shield machine of the eastern line touched the ground connecting wall with the newly-built Jiangpu Road Tunnel project, marking that the concrete of the eastern line gate began to break down. On July 31, the shield tunneling in the middle section of Jiangpu Road Tunnel came the good news that the shield tunneling machine officially started, the Komatsu shield tunneling machine safely and smoothly "drove" on the receiving frame. On August 2, the shield tunneling machine successfully completed its second tunneling, and the second tunnel of jiangpu Road tunnel new construction project was successfully completed.

This time, it is the shield tunnel of the eastern line of the middle section of the river of the newly built Jiangpu Road cross River tunnel, and the shield tunnel of the western line was completed before this year. Due to the impact of the epidemic at the beginning of this year, the eastern route shield was launched on March 1 this year and completed successfully in five months, marking the official completion of the jiangpu Road tunnel crossing the River between east and west. The completion of Jiangpu Road tunnel will promote the development and transformation of yangpu Binjiang public area, improve the distribution of traffic across the River in the northern part of Shanghai, and promote the integrated development of both sides of the Huangpu River.

As one of the major municipal projects in Shanghai during the 13th Five-Year Plan period, Jiangpu Road Tunnel is located between Dalian Road Tunnel and Yangpu Bridge. It is the 17th tunnel crossing huangpu River in Shanghai. At the intersection of Pudong and Rail Transit Line 18, the tunnel passes through the pudong and Puxi flood control walls, and the construction under the river is a great challenge to the safety and quality of the construction.

In order to minimize the construction risk, the project department should strengthen the project planning, strengthen the overall coordination and solid foundation management to ensure the safety of the project itself. In particular, scientific demonstration should be strengthened in the process of comparing the crossing schemes of large and small shields and risk analysis to ensure the standardization of construction procedures and construction. The maximum deformation and settlement of structures in the crossing process is far lower than the qualified standards in the industry.

This project is a mud-water balance shield. In order to facilitate the external transport of muck, the latest mud treatment equipment is adopted. This equipment realizes the reuse of waste water and completely dries the mud so that it can be directly transported out, which makes a contribution to the environmental protection and has a positive impact on the maintenance of the city appearance.

In the process of shield tunneling, the construction side has the courage to overcome the difficulties such as old shield equipment and frequent failures, strictly strengthen the technical quality management, and strictly monitor the construction hazard sources, so that the process of shield tunneling is always under control. At the same time, the project department conducted a detailed technical disclosure centering on the construction safety, technical quality, labor organization, and promotion of technical parameter control in the process of entering the cave, and defined the responsibilities for the position implementation. After more than 30 hours of continuous operations, the shield tunneling was successfully completed and received, which laid favorable conditions for the smooth opening of the subsequent jiangpu Road tunnel.