FIELD: construction.
SUBSTANCE: coupling unit comprises a coupling abutment made of concrete and a prism made of a cohesive soil. The prism is located within the borders of the ground dam in the upper part of the coupling unit. Within the borders of the coupling unit the surface of the coupling abutment at the side of the ground dam is coated with a geomembrane attached to it and a bentonite mat. The coupling abutment and the prism comprise inside them hollow microballs from compounds containing silicon, which prevent freezing of the coupling abutment in the coupling unit for its entire thickness at the side of the overflow weir and at the side of the ground dam crest.
EFFECT: increased operational reliability.
3 dwg
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