Tunneling

Definition

Tunneling is the act or process of digging a horizontal passageway through or under an obstruction.

Purpose

The purpose of tunneling is to create underground passageways for transportation, utilities, and other infrastructure without disturbing the surface.

Examples of Use

1. Subway Systems: Tunneling is used to construct underground subway systems in urban areas.
2. Utility Installation: Tunneling allows for the installation of utilities like water, sewage, and electrical lines beneath existing structures.
3. Road Tunnels: Tunnels are constructed to allow roads to pass through mountains or under bodies of water.

Related Terms

• Boring: The process of creating a hole or tunnel through a material using a drilling machine.
• Excavation: The process of digging or removing earth to create a cavity or space.
• Mining: The process of extracting minerals or other geological materials from the earth.

Notes

• Techniques: Various tunneling techniques include cut-and-cover, bore-and-shield, and tunnel boring machines (TBMs).
• Safety: Tunneling requires careful planning and safety measures to prevent collapses and ensure the safety of workers.