GROUND DAM ON PERMAFROST FOUNDATION Russian patent published in 2012 - IPC E02B7/06 E02B3/16 

FIELD: construction.

SUBSTANCE: ground dam comprises a central part arranged from the dam foundation to its crest from a fine-grained soil, upstream and downstream side fills and an anti-filtration membrane. The membrane is located in the central part of the dam and is made as vertical along the entire height of the central part from split bored piles deepened into the foundation at the specified depth. At the downstream side an ice and soil frozen curtain adjoins the anti-filtration membrane, which is arranged by means of freezing columns and is attached to the membrane by freezing. The material of bored piles in its composition contains hollow microbeads from chemical compounds containing silicon. Quantity of hollow microbeads provides for reduction of a heat conductivity ratio of the bored pile material to the specified value. In the foundation of the upstream fill there is a heat-shielding layer adjoining the anti-filtration membrane.

EFFECT: invention prevents penetration of a heating effect of a water reservoir via an anti-filtration membrane and via a unit of its coupling with the foundation.

13 cl, 2 dwg