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News: The NPT3700 Slurry Balance Shield Jacking Machine Applied in Comprehensive Power Line Reconstruction Project of 220 kV Substation, Yanji Road, Tianjin

Release time:

2026-07-24

News: The NPT3700 Slurry Balance Shield Jacking Machine Applied in Comprehensive Power Line Reconstruction Project of 220 kV Substation, Yanji Road, Tianjin

The NPT3700 slurry balance shield jacking machine is used in the comprehensive power line reconstruction project of the 220 kV substation on Yanji Road, Tianjin. The 3#~2# tunnels in the southern section of this project are constructed using the NPT3700 shield jacking machine provided by our company. The total length is 952m. The first 496 meters are jacked by the pipe jacking method, and the last 456 meters are constructed by the shield method. It originates from 3# and receives at 2#, and passes through two power tower bases, two sewage pipes and the Nancao Railway in sequence. The 3# starting well is a high point and gradually reaches the low point of the 2# receiving well. The elevation difference between the beginning and the end is 3.41m.

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News: NPT3700 Slurry Balance Shield Machine Deployed for Comprehensive Pipe Gallery 3 of Ningbo Century Avenue (Xingning Road – Dongming Road)

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