IMPERVIOUS MEMBER HEAD ARRANGED IN CREST AREA Russian patent published in 2006 - IPC E02B7/06 

FIELD: hydraulic building, particularly in permafrost ground zones.

SUBSTANCE: head comprises diaphragm built in impervious member in crest area. The diaphragm is made of concrete and has reinforcement extending the full height thereof. The diaphragm is also provided with anchoring panel arranged in lower diaphragm part. The extension has height of not less than 0.5 m and is fixedly secured to lower diaphragm surface. The diaphragm is formed by pumping nonfrost-susceptible mix into preliminarily thawed crest area and into impervious member head. The diaphragm is formed as pile of cohesive soil in crest area and impervious member head. The cohesive soil is introduced in preliminarily thawed crest area and in impervious member head for depth of not more that 0.5 m, wherein the diaphragm is covered with heat-shielding layer. Diaphragm at dam crest area and impervious member head is created by cementing dam crest and impervious member head. Cementing tubes arranged in cementing holes are used as the reinforcement. Cementing anchoring panel is arranged in lower diaphragm part.

EFFECT: increased structural reliability and reduced costs.

4 cl, 5 dwg