NPD3500 Slurry Balance Pipe Jacking Machine Deployed for Urban Pipeline Project in Shanghai
Release time:
2026-07-25
The Yangzhou Dilong NPD3500 slurry balance pipe jacking machine has been successfully put into operation for the Shanghai Longdong Avenue pipeline network project, undertaking dual-line pipe jacking and tunnelling tasks. The total construction length of the project reaches 1,500 meters. Notably, the equipment achieved a single long-distance tunnelling distance of 1,700 meters in 2023. With superior tunnelling performance, it ensures the efficient progress of long-distance and continuous trenchless construction for urban pipeline projects.
As a core urban arterial road, Shanghai Longdong Avenue is a key municipal upgrading project. Located in a bustling urban area, the project site features dense traffic routes and intricate municipal pipelines, with limited construction space and extremely high requirements for civilized construction. The long-distance continuous pipe jacking working conditions impose strict standards on equipment tunnelling stability, stratum adaptability, continuous operation performance and attitude control accuracy. Conventional pipe jacking equipment is incapable of uninterrupted ultra-long-distance tunnelling at the kilometer level.
To address the complex urban construction environment and technical difficulties of ultra-long-distance continuous tunnelling in Shanghai, Yangzhou Dilong specially deployed the NPD3500 slurry balance pipe jacking machine. Equipped with a high-performance slurry balance control system, the machine dynamically adjusts excavation face pressure in real time to precisely adapt to tunnelling in complex urban strata. It effectively solves common long-distance construction problems including unsmooth muck transportation, stratum disturbance and tunnelling deviation. Optimized through practical long-distance construction scenarios, the equipment boasts greatly improved overall stability, sealing performance and continuous operation capacity, fully meeting the construction standards for urban ultra-long-distance pipe jacking projects.
During on-site construction, the NPD3500 slurry balance pipe jacking machine delivered stable and reliable performance and successfully completed the 1,500-meter dual-line tunnelling section of Longdong Avenue with mature slurry balance tunnelling technology. Leveraging the proven construction experience of 1,700-meter single-span ultra-long tunnelling in 2023, the equipment maintained steady tunnelling and controllable deviation with minimal construction disturbance. It greatly reduces impacts on urban traffic, surrounding structures and residents’ daily lives, fully demonstrating the strong technical strength of domestic large-scale slurry balance pipe jacking equipment in urban ultra-long-distance trenchless projects.
The successful application of the NPD3500 slurry balance pipe jacking machine in the Shanghai Longdong Avenue project has perfectly completed the ultra-long-distance dual-line urban pipeline tunnelling task and effectively guaranteed the project’s construction quality and progress. Moving forward, Yangzhou Dilong will continue to deepen its layout in the urban municipal infrastructure sector. With highly stable, adaptable intelligent trenchless equipment and systematic technical services, the company will continuously empower the high-quality construction and upgrading of urban road and pipeline network projects across major cities.
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