Underground method of tunnel construction

Underground method of tunnel construction


Concrete foundation, reinforced concrete


Drainage layer, geotextile, 600-100 g/m2


PLASTFOIL® GEO membrane containing a waterstops and injectors system


Main structure, reinforced concrete

General information

Underground construction methods can be used in the construction of deep-laid (> 20 m) and shallow tunnels. All construction work on the tunnel structures is performed underground. A special system of mines, underground walkways and elevators is created, ensuring the delivery of construction equipment and materials, as well as soil removal.

This tunnel construction method is more time-consuming and expensive, but it makes it possible to build tunnel constructions without disturbing the functioning of roads and communication above the tunnel.

A special waterproofing layer is used to protect the tunnel structures from the influence of groundwater and penetration of excessive moisture into the interior space of the tunnel. Reliable, solid and durable waterproofing material can significantly extend the period of the facility’s successful operation. PLASTFOIL® GEO polymer membrane will be the best choice for the tunnel waterproofing.


  • High elasticity, which provides reliable waterproofing in case of building settlements;
  • Biological stability;
  • Wear resistance;
  • Resistance to tearing;
  • Water resistance;
  • Durability.


Layer name


Size, package

Consumption, unit per 1 sq. m.

Basis — concrete foundation, reinforced concrete

sq. m.

As per the design

As per the design

Geotextile, 600-1000 g/m2

sq. m.

Coils, width 3 m


PLASTFOIL® GEO waterproofing

sq. m.

Coils 2,1×20 m


Reinforced concrete structure


As per the design

As per the design