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Trenchless Technology is an innovative technique used by Soil Tech in the past two decades in carrying out installation or rehabilitation of underground infrastructure with minimal disruption to surface traffic, businesses and residents. It has many advantages over the open cut method where it releases less pollutants, does not interrupt the surface activities, creates no hazardous conditions and is less expensive. The most commonly used method of trenchless technology is Micro tunneling, which mainly has two categories.
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Existing problems with the open cut method (the most conventional method) in the Sri Lankan context ;
- Constant traffic jams
- Continuously digging up the road from time to time under various departments.
- Road surface conditions after relaying.
- Air is constantly polluted with dust.
- It causes hazardous conditions for the road users due to the open trenches.
- Projects drag up more than the required time.
Pipe JackingPipe jacking, is a procedure for introducing underground pipelines, channels and ducts. Robust hydraulic jacks are used to push uniquely composed pipes through the ground behind a shield in the meantime as excavation is taking place within the shield. This method gives a flexible, structural, watertight, completed pipeline as the tunnel is uncovered. |
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Horizontal Directional DrillingHorizontal directional drilling (HDD) is a famous method for laying pipelines or other utility lines up to 1.5 m in width in environmentally sensitive areas. It is preferably a drilling strategy than a tunneling technique, however the outcome is a smaller diameter tunnel. A pilot borehole is progressively developed until the desired product pipe can be drawn into the cavity. |
