Choose your language
Excavated Tunnels

    Excavated Tunnels

    Excavated tunnels are built without removing the ground above using mining methods such as drill & blast, boring machines, etc. In order to maximize their service life and protect them from the effects of groundwater tunnels need to be watertight. Water can compromise the integrity of the concrete structure, create disturbances to the users and in general increase the maintenance costs.

    Depending on the groundwater conditions, two different waterproofing concepts are used: in tunnels above the ground water level or drained tunnels, the waterproofing membrane covers only the upper part of the section (umbrella tunnels), whereas in tunnels under hydrostatic pressure the waterproofing covers the entire section.

    During the last decades, PVC-P geomembranes have been used in the vast majority of tunnels worldwide due to their flexibility, adaptability, durability and ease of application. Compartment systems can be created combining the use of geomembranes and waterstops, allowing for injection repairs in case of damage and minimizing the maintenance cost.

    RENOLIT has been active in this field for more than 40 years with the Alkorplan range, which holds the most prestigious European certifications and has been used in many iconic projects all over the world.

    Some references

    Downloads

    Brochures

    Download iconWaterproofing of tunnels under infiltrating water EN
    application/pdf Document (pdf)
    1 MB
    Download iconWaterproofing under water pressure
    application/pdf Document (pdf)
    2 MB

    Technical datasheets

    Download iconRENOLIT ALKORPLAN 35034 TDS EN
    application/pdf Document (pdf)
    258 KB
    Download iconRENOLIT ALKORPLAN 35036 TV TDS EN
    application/pdf Document (pdf)
    238 KB
    Download iconRENOLIT ALKORPLAN 35036 bp TDS EN
    application/pdf Document (pdf)
    395 KB
    Download iconRENOLIT ALKORPLAN 35036 T TDS EN
    application/pdf Document (pdf)
    260 KB
    Download iconRENOLIT ALKORPLAN 35041 EN
    application/pdf Document (pdf)
    244 KB
    Download iconRENOLIT ALKORPLAN 35041 B1 Certification TDS EN
    application/pdf Document (pdf)
    115 KB

    DOP

    Download iconDOP RENOLIT ALKORPLAN 350340713
    application/pdf Document (pdf)
    57 KB
    Download iconDOP RENOLIT ALKORPLAN 350360713
    application/pdf Document (pdf)
    57 KB
    Download iconDOP RENOLIT ALKORPLAN 350410713_1
    application/pdf Document (pdf)
    57 KB

    Specifications

    Download iconSpecification of tunnels under infiltrating water
    application/pdf Document (pdf)
    1 MB

    General downloads & certificates

    PDF IconISO 9001 2017-2020 EN
    PDF iconDocument (pdf)
    260 KB
    PDF IconISO 14001 2017-2020 EN
    PDF iconDocument (pdf)
    269 KB
    PDF IconCertificate of conformity membranes
    PDF iconDocument (pdf)
    265 KB
    PDF IconCertificate of conformity polymeric geosynthetic layer
    PDF iconDocument (pdf)
    268 KB

    Contacts