When it is not possible to use open cut trenching to construct duct block for cable installation, an alternative solution will be the use of pipe jacking. Pipe Jacking using tunnel boring machine and hydraulic jacks located inside the jacking pit to constuct a borehole scured by R.C. concrete sleeve.
Pipe jacking can be used in the following site situation:-
- Under Highway;
- Under R.C. Culvert;
- Under Major Road Junction;
- Under Canal;
- Under Other Services; etc
Benefits Include:
- Minimize Traffic Disruption
- Limited Ground Disturbance
- Limited Environmental Impact
- High Compressive Strength
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