METHOD FOR ERECTION OF MASSIVE CONCRETE DAMS IN SEVERE CLIMATIC CONDITIONS

摘要

FIELD: construction.;SUBSTANCE: invention is related to hydrotechnical construction of massive concrete dams in severe climatic conditions. Method includes laying of concrete in multilayer blocks into upstream pillar, preferably in cold period of the year in warm curb under covers and open single-layer blocks into downstream wedge of concrete dam preferably in warm season of the year. In order to provide favorable conditions of concrete hardening in downstream wedge in horizontal seam between single-layer blocks at the distance from 0.3 to 1.5 m from surface of downstream wedge, on which heat insulation coat is arranged, for the time of winter interruption in its concreting, a heat generating system made of heating wires is placed, such as PPZhG, PNSV or similar. Heat generating system is used to maintain temperature mode in upper part of downstream wedge erected tier concrete work within the limits specified by thermal calculations.;EFFECT: invention makes it possible to increase economic efficiency of concrete works performance technology, to prevent appearance of deep temperature cracks in concrete of downstream wedge and to reduce time of winter break in its concreting.