Imtech Tunnel Systems

IMTECH

THIS TUNNEL

TRAFFIC & INFRA

RUNS ON

Comfortable and Sustainable EnvironmentUrban areas are growing; with the result that more people have less

space to live, to work and for recreation. This also means that traffic

in and between cities is growing as well, creating a threat that parks

or landscapes will have to be sacrificed. Road and rail tunnels are the

pragmatic solution to retain a liveable and sustainable environment

for everybody and to improve travel comfort.

Smooth Traffic FlowCity and countryside tunnels preserve unique locations and mini-

mise travel time by avoiding intersections with other infrastructure.

Nevertheless, to guarantee a smooth and safe traffic flow through

tunnels, many requirements have to be met. Technology plays an

essential role in this.

Tunnel SafetyAccidents in tunnels can have catastrophic consequences. Therefore

it is necessary that safety and incident management is included

at the design stage and is continued in the building and operating

phase. Traffic and tunnel technical installations are crucial to pre-

vent and detect accidents and protect the tunnel, its users and the

environment from a disaster.

High AvailabilityBoth the volume of traffic through and the length of tunnels are

growing. Combined with higher international safety standards and

an increasing number of technological installations, it is difficult for

operating personnel to have a complete overview of the situation in

the tunnel and its surrounding area. Only with a totally integrated

solution that combines information and control, of the entire tunnel

and the traffic network, can the highest availability be achieved.

The Integrated Tunnel Disciplines of Imtech

Electrical

Almost all installations in tunnels are dependent on electricity to work properly. A continuous and

stable power supply is therefore crucial for the safety and availability of a tunnel. We have design

engineering, installation and maintenance experience, ranging from high-voltage switchgears to

medium and low voltage distributions boards. A totally integrated energy management system with

additional uninterruptable power supplies and power generators guarantees the continuation of

electrical energy, even when the mains electricity supply has failed. With the use of a tunnel lighting

management system and LED technology the safety and availability of tunnels is increased while

reducing electricity demand.

Mechanical

The ventilation system is the most visible mechanical installation in tunnels. It is continuously being

used to extract toxic and hot exhaust fumes. The air pollution in a tunnel is measured using sensors

lined to the ventilation system. Fans are also used in case of fire to remove smoke and heat quickly

and completely, making it possible for road users to safely exit the tunnel. Other mechanical instal-

lations like emergency exits, fire extinguish and pump installations are also vital for the safety of

the tunnel, its users and the environment. Typical for all mechanical installations is that they have to

be designed and built in close cooperation with the civil constructor and are maintenance sensitive.

Traffic

To be sure that traffic can safely and smoothly drive through tunnels, preventative and corrective

solutions are available. On the ramp to the tunnel a height detection system is installed to prevent

vehicles that exceed height limits from accessing the tunnel. Inside the tunnel automatic speed

detection systems are used to detect slow or stopped vehicles. In the case of a traffic jam or an

accident, approaching traffic is ordered to slow down by the motorway traffic management system.

With the traffic signalling system, lanes can be closed to traffic and vehicles can be forced to move

to another lane. Together with the other Electrical and Mechanical installations these traffic instal-

lations provide a secured and regular flow through the tunnel.

ICT

All information comes together in the Control Centre. From here the safety and traffic flow is

monitored continuously by the operators. Video cameras observe the traffic and the situation in the

tunnel and give the operators a complete overview of the situation in case of an incident. Using the

speaker or the radio broadcast system, the operator can give instructions to the people in the tun-

nel or they can have contact via the intercom installation. From the Control Centre, installations can

be controlled manually or emergency services can be alerted to respond to a situation. All technical

installations are connected to the communication network, linking data, voice and video to the

Control Centre.

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Integrated ApproachImtech is your partner for the design, build, main-

tenance and operation of a safe tunnel offering

optimal conditions for the users and stakeholders. By

working in close cooperation with our customers, we

understand your requirements and translate these

into solutions and services. Through our longstanding

international experience, manufacturer independency

and an integrated multidisciplinary approach, we give

you the best performance to meet the demands in all

phases.

Total Solution ProviderImtech is a total solution provider for road and rail

tunnels. One partner for all solutions and services, gua-

ranteeing the lowest total cost of ownership (TCO) and

the highest safety and availability for your infrastruc-

ture. Thanks to a multidisciplinary integrated approach

for every phase of your tunnel project, we offer the

highest added value for all parties involved.

Imtech Traffic & Infra

Basicweg 16

3821 BR Amersfoort

P.O. Box 2542

3800 GB Amersfoort

The Netherlands

T +31 (0) 33 454 17 77

F +31 (0) 33 454 19 75

E [email protected]

I www.imtech.eu/traffic-infra

The total solutions provider www.imtech.eu/traffic-infra