Definition of Tunnel waterproofing systems with increasing waterproofing requirements.
The mining construction is the typical construction for Tunnels in the underground. We principle differentiate between periodic Tunnel driving and continuous Tunnel driving. In both variants, the use of tunnel sealing systems with geomembranes is possible.
Perodic driving = drill and blast
Continous driving = tunnel boring machine
No. (acc. to increasig sealing requirements) | Hydrostatic (m) | Waterproofing-membrane System | Sealingsystem (Water corrision class, XA-class) | Additional Requirements | ||
---|---|---|---|---|---|---|
low, moderate XA1, XA2 | high, XA3 | Waterstops (inside or outside installation) | Integrated Injektion-system | |||
1 | without | - | watertight concrete | - | yes | no |
2 | without | umbrella | Geomembrane 2mm | - | no | no |
3 | without | all around 360° | - | Geomembrane 3mm | no | no |
4 | <10 | - | watertight concrete | - | yes | no |
5 | <10 | all around 360° | Geomembrane 3mm | yes | no | |
6 | <30 | - | watertight concrete | - | yes | no |
7 | <30 | all around 360° | Geomembrane 3mm | yes | yes | |
8 | <60 | all around 360° | watertight concrete + Geomembrane 3mm (optional Geomembrane 4mm) | yes | yes | |
9 | <60 | all around 360° | watertight concrete + Geomembrane 3mm + Leakage detection system | yes | yes | |
10 | <60 | all around 360° | Geomembrane double layer (3mm + 2mm) | yes | yes | |
11 | <60 | all around 360° | Geomembrane double layer (3mm + 2mm) + Leakage detection system | yes | yes | |
12 | >60 | all around 360° | watertight concrete + Geomembrane double layer (3mm + 2mm) | yes | yes | |
13 | >60 | all around 360° | watertight concrete + Geomembrane double layer (3mm + 2mm) + Leakage detection system | yes | yes |
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