Tunnel Enlargement Equipment
for old railway tunnels.
Requirement: Reconditioning old railway tunnels for decades of further use.
These days, tunnels are indispensable features of railroad systems. Countries with mountain massifs and ranges are especially reliant on tunnels for rapid links between towns and with other countries. Most tunnelling work was carried out in the late 19th century and is now in serious need of refurbishment. Distances between track center lines are too small for today's needs. This significantly slows down rail traffic because the maximum permitted speed is always a function of the distance between track center lines. In addition, because they were built with natural rock, these tunnels are close to the end of their service lives.
Solution: Herrenknecht Tunnel Expansion Equipment - safety to the EBO10 standard.
There is no need to build new tunnels and alter track alignments because existing tunnels can continue to be used to their full capacity for all train types. The solution to the problem is to ream the old tunnel and reclad it with segments in the same operation. Single-track train operation is possible throughout the construction work because a protective mantle separates the working area from the track in use. Refurbishment increases both tunnel diameter and the distance between track center lines. This involves cladding the tunnel walls with concrete segments and making the whole tunnel compliant with European safety standard EBO10. The effect is to extend the life of the tunnel by decades.
Advantages of Herrenknecht Tunnel Expansion Equipment.
- Greater permitted maximum train speeds.
- Segmented construction extends tunnel life.
- Single-track operation (60 km/h) during tunnel refurbishment.
- Average progress of up to 10m per 24 hours.
- Saves time because of the mechanized working method and optimized trailer-based building site logistics.
- EBO 10 standard, 4-meter track center line distance.
- Versatile.
Areas of Application
- Twin-track non-electrified railroad tunnel
- Construction method without lining or with shotcrete.
- Internal diameter of 10 to 12 meters.
See the datasheet for more information on Herrenknecht railroad tunnel refurbishment.
Interested?
We will be delighted to help you if you have other questions on the subject of tunnel refurbishment.
