MASTER DRILLING UNVEILS
MOBILE TUNNEL BORER
Mobile Tunnel Borer Launch
Master Drilling has partnered with Italy-based tunnelling expert, Seli Technologies, to launch our new mobile tunnel border (MTB); focused primarily on convenience, access and safety. Revealed during a stakeholder site visit in Italy, the MTB is able to operate on a 12° incline/decline, has a 30m turning radius and can be dismantled and brought back to the surface after a project is complete.
The Mobile Tunnel Borer System Overview
The MTB system is specifically designed for the mining sector, but also has multiple applications across civil and energy-related projects. The machine can be utilised to excavate a variety of tunnels including tunnels to underground ore bodies such as declines, portals, haulages, inclines, ramps, ring roads and connecting tunnels etc.
To initiate cutting, the MTB requires a rounded profile side wall to grip and thrust the machine forward. For this reason, a starting frame is assembled in advance of the next heading to be tunnelled. Once the backup of the MTB has advanced through the starting frame, it can easily be disassembled and moved to the next location where a new heading will begin - this process will then be repeated. For breakaways, the MTB relies on a starting chamber that will be excavated and made safe by cyclical conventional mechanised drilling, blasting, scaling, loading, supporting and hauling equipment.
The Mobile Tunnel Boring technology is specifically designed for horizontal and inclined hard rock applications; eliminating the need to drill and blast. The high-level automation allows tunnels to be excavated with a smooth circular cross-section, safely and cost effectively.
Mining sector: Access tunnels to ore bodies in decline-type ramp or horizontal haulage format.
Energy sector: Hydroelectric or pump storage projects for the use of tailrace tunnels.
Civil sector: Used for metro utility wastewater pipes, communication etc. and railway infrastructure.
4.5M DIA. CONFIGURATION:
Total Length : 23 m
Weight : 240 metric tons
5.5M DIA. CONFIGURATION:
Total Length : 31 m
Weight : 300 metric tons