Tunnel construction
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Tunnel construction Special applications require special solutions

Security for man and appliances Specially adapted for rough conditions or hazardous atmosphere, all housings IP65 The baseplates of the Woertz Lithos boxes afford fastening possibilities - M4 or M6, depending on the size of the box. These galvanized brass bushings are sealed in a bar within the baseplate edgeways and can receive mounting plates, mounting rails, printed circuit boards etc. Lithos boxes are available in different sizes fitted with the suitable terminal sets Both captive screws of the cover and bushings for fastening it are made up with stainless steel. Ex factory the standard...

Reliable, robust and durable Woertz Lithos boxes have not been shortened compared to the boxes of cast-iron. In terms of resistance they are even unbeatable. A plastic housing for rough applications. Properties of the material Density Resistance to impact Impact strength Tensile strength Elongation at rupture E-module (bending test) Limiting flexural stress Burning behaviour Spec. contact resistance Surface resistance Dielectric strength Heat conductivity (20 °C) Unit g/cm3 mJ/mm2 mJ/mm2 N/mm2 % N/mm2 N/mm2 Class x cm ABS 1.05 60 10 43 20 2100 90 HB 1013 4 x 1014 24 0.18 kV/mm W/mK...

Quality, strength and safety Tunnel construction is related to stringent requirements and strains. A high availability of the tunnel is however expected. Cleaning and maintenance services are rarely possible. All promising options of the Woertz flat cable system - in terms of flexibility, rapidity and safety - may be exploited by constructing a tunnel. Using the different cross-sections and degrees of protection allows to perform a temporary infrastructure for the construction phase and a definitive one once the tunnel is operational. Construction phase During construction the flat cable...

Easy, flexible and cost-effective The flat cable system shows its strengths not only during installation but also during operation. Type of flat cable ecoline P3 ecobus power 5G2.5 ecofil 5G4 ecofil i 7G2.5 ecobus power 5G10 ecofil i 5G16 Number of conductors 3 5 5 7 5 5 Section Sheath material Contact 2.5 mm2 2.5 mm2 4 mm2 2.5 mm2 10 mm2 16 mm2 pierced screw-type screw-type screw-type screw-type screw-type PVC / FR/LS0H (HF) PVC / FR/LS0H (HF) PVC / FR/LS0H (HF) PVC / FR/LS0H (HF) PVC / FR/LS0H (HF) PVC / FR/LS0H (HF) Degree of protection screw-type IP 68 screw-type / plug-type IP 20...

In practice „The costs related to connectors and couplers would be to high for us. And to introduce a cable and lay spur lines would be difficult. This is the reason why we have opted for the Woertz flat cable system.” South entrance of the Katzenberg tunnel with two pipes This statement originates from Roberto Piacentini from the machine technology department of the construction supervision. He is electrical engineering technician, at Wayss und Freytag, one of the four partners of the ARGE including Züblin, Marti and Jäger Bau. The tunnel drives from Efringen-Kirchen through the mountain....

Efficient, costeffective Major project with 15 MW power input 80 percent less man hours 18 km flat cable „Ducts and conduits are laid along the walls to carry power, wastewater, cooling water and so on. They seem to be endless. The total electrical connection power amounts to 15 MW, whereas our current consumption varies between 3 and 3.5 millions kWh per month“, according to Piacentini. Supply sections Within the tunnel electricians have installed transformers at intervals of one kilometer. Each transformer supplies 1000 m flat cable in one direction with a voltage of 400 V. The cable is...

Rinderweid Drive lighting in tunnels In addition to the drive lighting further demanding works need a great deal of attention. The 385 meter long two-way traffic road tunnel „Rinderweid“ on the A1.1 acts as a feeder to the A-road A1 at Arbon. To achieve the regular maintenance works of the tunnel a traffic guidance facility is installed over the cantonal roads to deviate the traffic. A drive lighting is simultaneously installed. The electrical installations are connected to the control system of the canton Thurgau. Drive lighting Flexibility and security Installing the traffic guidance...

Cassanawald Drive lighting in tunnels Maintenance works on roads have to be well planed and quickly performed. The 2.9 km long Cassanawald tunnel is located at an altitude of 1600m near Nufenen on the busy North-South road A13. Winter salting and heavy traffic have lead to serious damage and repairing may be difficult and costly. Pre-wiring To achieve real time savings lamps may be wired in advance to the flat cable connecting boxes. On the building site in the tunnel the lamps have only to be fastened and the boxes to be placed on the flat cable – electrical contact is made by tightening...

Gotthard base tunnel Lighting during construction of railway tunnel Installation of temporary lighting on the building site has to be quick, safe and easy. With her NRLA project (New Rail Link through the Alps – called NEAT project on German), Switzerland, the tiny country writes a remarkable new railway story. The Gotthard base tunnel is at the heart of this ambitious project: with a planned length of 57 km, it will be the longest tunnel in the world. The biggest construction job of this century promotes modern machines and new technologies. Both human and technical resources have to...

Gotthard base tunnel Emergency lighting in railway tunnel Get ready for every eventuality. Emergency lighting may save lifes. Safety first even in the longest tunnel in the world. Great attention is paid to workers safety and not only through the building phase. In the Gotthard base tunnel everybody has to get ready in the eventuality something unforeseen happens. Even after several years of operation a visible and good working emergency lighting is essential. The Woertz flat cable has to meet new requirements thus. Thanks to the recently designed flat cable with insulation integrity up to...