Single/Double Barrier System - Mined Tunnel

Single Barrier System is for hydrostatic water pressure conditions including compartments and injection possibilities. Double Barrier System is also designed to withstand hydrostatic water pressure and combines a test and injection system.

Examples of Application:

Road Tunnels
Railway Tunnels
Shafts
Pressure Galleries

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The system consists of two tunnel membrane layers:

First layer being the main membrane, maximum 4mm thick.

Second layer, a 2mm membrane is placed on top of the first layer.

To obtain vacuum between the two layers, the second layer membrane is delivered with an embossed surface in contact with the first layer.

System description:

Protan Disc
Protan Protect (Protection Sheet)
Protan Waterbar
Protan Inject (Injection hose)
In-Situ concrete
Protan InfraPlan Tunnel Membrane
Protan Geo (Geotextile)
Shotcrete

Protan recommends to use InfraPlan P32+ for the Single Barrier System for hydrostatic pressure.

For Double Barrier Systems, Protan recommends to use InfraPlan P32+ on the first layer and an embossed InfraPlan P20 as a second layer.

Protan InfraPlan Systems

Umbrella Draining System - Mined Tunnel

For partial waterproofing the most common tunnel application is the Umbrella System/Drainage System. This system is specifically designed for tunnels with dripping water conditions.

Single / Double Barrier System - Mined Tunnel

Single Barrier System is for hydrostatic water pressure conditions including compartments and injection possibilities. Double Barrier System is also designed to withstand hydrostatic water pressure and combines a test and injection system.

Tunnel Lining Type III - Mined Tunnel

For tunnels with dripping water conditions, the Norwegian Road Authorities recommend to use a Type lll membrane, a reinforced membrane that will provide strength and stability.

InfraPlan - Other Systems

In addition to mined tunnels, Protan deliver full waterproofing systems for a wide range of applications for underground structures: Cut and Cover umbrella and barrier systems, cross-passages, portals and culverts.