WHEN THEODOLITE MEETS PIPE JACKING

Author: SOUTHDate: December 29, 2020View: 136

At the end of Dec.2020, the water diversion project from Ningbo to Hangzhou Bay was started, which crosses 4 districts & cities, 15 towns and streets with a total length of 69.2 km. The planned water transmission line of culvert is 28.777 km long and the pipeline is 40.423 km.

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Pipe jacking, generally referred to in the smaller diameters as micro-tunnel, is a technique for installing underground pipelines and culverts. 

 

The method provides a flexible, structural, watertight, finished pipeline as the tunnel is excavated. It can easily cross the railways, roads, rivers, surface buildings, underground pipelines, instead of excavation on the surface. 

 

When pushing the specially designed pipes through the ground behind a shield, NT-02D offers an accurate laser pointer with 1000m long range, which will largely improve the limitation of operation when moving the equipment from station to station.


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How does NT-02D help the pipe jacking of water diversion project?

 

1. Confirm the Center Line

Pinpoint laser pointer of NT-02D provides an accurate and reliable center line, leads from the surface to the underground. The center line is applied for orientation of the direction, which helps the pipe jacking machine to install underground pipelines and culverts.

 

2. Laser Guidance for Pipe Jacking

Benefit from the 1000m power laser pointer, NT-02D offers a long-range guidance for pipe jacking. When the laser pointer deviates from the sheet, it means that the pipe jacking machine deviates from the designed direction.

 

NT-02D supports the external power supply for any full-days’ work, which eliminates the need for recharging or carrying extra batteries.


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