KOINOR – Improvement of Fire Safety and Upgrading of Underground Transport Tunnels

The stock of existing tunnels in Germany is obsolete and legislators have revised the guidelines, in some cases several times. If the obsolescence of a tunnel now demands repair or a structural upgrade, then the new requirements become applicable. This can sometimes lead to considerably more stringent requirements for operational safety, durability, resilience or constructional fire protection. As part of the KOINOR research project, concepts and processes are being developed for the improvement of fire protection and upgrading of underground transport tunnels. A central point of the development is a sustainable construction material with high fire resistance for application to existing tunnels, which should also offer a solution for other typical weathering mechanisms.

1 Introduction
1.1 Background

Existing tunnels for road, rail and metro modes of transport are exposed to heavy stress during their period of use, which can lead to damage to the tunnel substance. Fig. 1 and Fig. 2 show the age distribution of existing road and rail tunnels in Germany. The first road tunnels were already built at the start of the 1970s, and the first rail tunnels as far back as 1850. From the available data, the conclusion can be drawn that rail tunnels currently have an average service life of 100 years and the oldest road tunnels are about 50 years old. Most tunnels must...

Related articles:

Issue 03/2016 Trade Fair

InnoTrans 2016 – Tunnel Construction & Renovation: Fire Protection gains significance

Some 700 km of metro, urban railway and light rail tunnels, 680 km of main line as well as 320 km of road tunnels: transport tunnels with a total length of some 1700 km have been built in the Federal...

Issue 08/2017 Constructional fire protection

Cement-based, glass fibre-reinforced Tunnel Fire Protection Boards

In order to ensure the highest degree of safety in underground transport facilities, integrated technical solutions in combination with constructional fire protection can be of assistance. Solutions...

Issue 02/2012 2011 STUVA Conference in Berlin

Underground Construction for Sustainable Environmental and Climate Protection

The Research Association for Underground Construction (STUVA) staged its Conference – held every 2 years – on this occasion from December 6 to 8, 2011 on the Berlin fairgrounds. The topical theme...

Issue 07/2013 Fire Protection

Fermacell Aestuver: Specialist for Fire Protection in modern Tunnelling

Fermacell Aestuver will present concepts for preventive fire protection in underground transportation facilities at the STUVA Expo from November 27 to 28 in Stuttgart (Hall 2, Stand A112). Aestuver...

Issue 03/2020

Optimisation of Constructional Fire Protection of a Built-Over Underground Station Using Fire Simulation

1 Introduction and Objective At Düsseldorf airport, the future line U81 will run through an underground section with a running tunnel and the underground station “Flughafen-Terminal” (Fig. 1)....