UNDERGROUND CONSTRUCTION HEAT-AND-WATERPROOF INSULATION Russian patent published in 2008 - IPC E02D31/00 

FIELD: construction industry.

SUBSTANCE: invention refers to underground construction and can be used e.g. during construction of civil protection facilities, underground storages, tunnels, etc. Heat-and-waterproof insulation of underground construction consists of waterproof-insulating material coat which is applied to reinforced-concrete protection structures and is the most preferable one for certain conditions. Air casing (20-30 mm thick) made from air-tight material is installed in the construction. Air casing arranged with a gap from waterproof-insulating layer covers upper part of construction outline, and its inlet hole is connected to air-preparation station which comprises either steam, or water, or electric coil air heater and fan, and its outlet hole is provided in that part of casing which is located near construction ventilation air outlet and is vented to atmosphere. Casing, on its edges and on top (along centre line) throughout its length, is equipped with strips which are made from same material and are equipped with holes to be attached to protection structures.

EFFECT: protection of construction from condensate forming from ventilation air flowing through construction, and protection from condensed moisture droplets falling down from upper part of outline (ceiling) to equipment and people.

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