Horizontal Raise Boring
Horizontal Raise Boring’s (HRB) continuous excavating cycle produces a stronger structure than conventional drilling and blasting, and is more cost effective and reliable than other systems.
We have pioneered HRB technology and applications worldwide. HRB is similar to traditional raise boring where a contact tunnel is bored horizontally.
Used where a horizontal excavation is required and a chamber is available at both ends.
Excavating tunnels through mountains to connect parallel metro and rail tunnels.
For nuclear storage tunnels or short tail races in hydro-electric plants.
Has lower support requirements due to stable circular excavation.
Improved production advance rates as a result of continuous excavating cycle.
Compact equipment design contributes to greater mobility. More cost effective
and reliable when compared to a TBM system.