Used TBM Machine For Sale in Namibia

Used TBM Machine For Sale in Namibia

What is TBM Machine?

A tunnel boring machine, also known as a “mole”, is a machine used to excavate tunnels. Tunnels are excavated through hard rock, wet or dry soil, or sand, each of which requires specialized technology. Tunnel boring machines are an alternative to drilling and blasting methods and “hand mining”.

Used TBM Machine For Sale in Namibia

ZOLLERN gearboxes power tunnel boring machines around the world that are used to bore tunnels for road and rail traffic or water and wastewater supply.

Frequently Asked Questions

How much does a TBM tunneling machine cost?

An often quoted general rule of thumb for the price of a Tunnel Boring Machine is; US$ 1 million for per meter in diameter. Thus, a TBM of 8 meter in diameter would cost around US$ 8 millions.

How much can a TBM dig in a day?

To dig the tunnels, giant cutterheads at the front of the TBM rotate, cutting away at the earth. When digging, the earth is carried up the screw conveyor and out of the TBM within a slurry pipe or on a conveyor belt. On average they will dig up to 15 metres a day.

How long does it take to build a TBM?

The 15.6m diameter TBMs will take around 6 months to assemble on site, with the parts lowered into the ground by a massive a 550-tonne gantry crane.

How fast can a TBM dig?

Thus the need for tunnel boring machines becomes timely. However, existing equipment can only dig approximately 20-50 meters per day, which is 10x slower than a snail can crawl for a day. Teams suffer the challenges of catching up to a speed that will improve the tunnel boring process.

How much does it cost to run a TBM per hour?

For a new TBM, 200 hrs./yr. @ 5.5%, the hourly cost for interest is $935.00/hr. alone! Operating $735.00/hr.

How much does a TBM cost per hour?

The average hourly rental rate of the Socata TBM 850 is around 2,100 USD per hour.

What are the disadvantages of tunnel boring machine?

The disadvantages are:

  • It is expensive.
  • Hard, abrasive rock causes problems for cutters.
  • It is difficult for the machines to cut through weathered, sheared, and highly jointed rock.
  • Actual tunneling time is reduced by frequent break-downs. A TBM is usually tunneling a maximum of 50% of the time.

How many types of TBM are there?

What types of tunnel boring machines are there? There are two large groups: moles and shields. Shields: these are tunnel boring machines designed to excavate in soft rocks or friable terrain; they require setting up support.

What is the fastest boring machine?

The fact of the matter is, two decades have passed and the Robbins open-type TBM chosen for this project is still considered to be the world’s fastest TBM. The picturesque Blue Mountains in New South Wales, Australia.

Are tunnel boring machines reused?

But the tunnelling equipment has by no means reached its end. Our premium technology is designed for reuse in several project cycles. Professional rebuilding makes parts used as good as new. With maximum transparency and without any compromises in terms of quality, safety or reliability.