METHOD TO INCREASE STABILITY OF CONCRETE DAM ON BED ROCK

摘要

FIELD: construction.;SUBSTANCE: method includes fixation of a dam at the side of a discharge face to a bed rock by anchor rods formed as bundles, lower parts of which are strengthened with cement or another hardening mortar in wells. Anchor rods, for instance, steel reinforcement bars with the diameter of 15-20 mm, are placed by lower parts into wells that are filled with still non-hardened cement mortar and are drilled for arrangement of an anti-filtration curtain in the bed rock, for the depth of which the strong anchoring of these rods is provided, and simultaneously passive involvement of the bed rock volume strengthened by cementing into static operation of the dam-bed system. Afterwards the base part of the concrete dam is concreted, in which also after hardening of concrete, the upper parts of anchored rods are rigidly fixed spontaneously, providing for passive anchoring of the concrete dam to the bed rock at the same time.;EFFECT: increased stability of a concrete dam on a bed rock.;2 cl, 2 dwg