The method of repair of concrete lining of irrigation canals

摘要

1. A method of repairing concrete linings of irrigation canals, including the removal of a defective coating area, characterized in that concrete with a layer thickness of δ = 0.05 m is applied to a pre-moistened surface along the damage contour from each side of it, onto which polymer is laid with hard ribs down profiled geomembrane, and in the presence of large damage with a width of b≥1.5 m, a polymer geogrid is additionally laid on the concrete layer. 2. The method according to claim 1, characterized in that the width of the geomembrane strip is determined depending on the size of the damage to the concrete lining, taking into account the margin according to the formula b = b + 2b + 2b, m, where b is the width of the damage, m; b is the width of the deformation region, m; b - the width of the stock on each side, taken as b≥0.15 m - in the presence of minor damage b≤1.5 m; b≥0.30 m - in the presence of large damage b≥1.5 m.