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Trenchless Technologies

Trenchless technologies are engineering methods for installing or rehabilitating underground utilities (pipelines, cables, etc) without the need for continuous open trench excavation, reducing environmental, traffic, and urban impact.

Trenchless Technologies

Main methods:​

  • Horizontal Directional Drilling (HDD) – precise drilling at a predetermined depth and direction.

  • Microtunneling – using shield machines and automated guidance systems.

  • Pipe bursting and pipe jacking – replacing old pipes or installing new ones with hydraulic or pneumatic equipment.

Horizontal Drilling

Horizontal Directional Drilling is used to install pipelines or cables under roads, rivers, or buildings without disturbing surface infrastructure.

Horizontal Directional Drilling (HDD)

The process:

  1. Drilling a pilot hole with a guided drill head.

  2. Reaming (enlarging) the hole to the required diameter.

  3. Pulling in the pipe or cable.

Optical Cable Installation

Trenchless methods allow rapid fiber optic network deployment with minimal disruption. Cables can be installed:

  • In protective conduits installed via HDD.

  • Using micro-trenching (narrow cuts in pavement).

  • Through existing utility ducts or sewers.

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