Water stopping construction method for horizontal seam of face rock-fill dam panel

Abstract

The invention discloses a water stopping construction method for a horizontal seam of a face rock-fill dam panel. The water stopping construction method comprises the following steps: firstly, setting connection seams of first-stage and second-stage concrete panels into the crease line styles; secondly, forming grooves in seam closures of the connection seams on the water attaining surfaces of the first-stage and second-stage concrete panels, perpendicular to the face rock-fill dam inclination and carrying out construction and scabbling treatment; thirdly, filling a polysulfide sealant water stopping filler into the grooves; fourthly, water stop plates of which the width is larger than the groove mouth width of the grooves are attached to the groove mouths of the grooves; fifthly, coating a brushing-type plastic filler protective layer of which the width is larger than that of the water stop plate on the outer surface of each water stop plate. The water stopping construction method has the advantages that as the crease line connection seams are adopted, the first-stage and second-stage panels can be connected more securely, the construction is convenient and the operation is simple; as the polysulfide sealant water stopping filler is filled into the rectangular grooves, embedded into the rectangular seams and kept at the embedding part to perform a water stopping function, and flows into the connection seams from the embedding part under the action of water pressure, the water stopping effect of the connection seams is greatly improved.

Description

technical field [0001] The invention relates to the water-stop construction of horizontal joints between upper and lower concrete blocks in water conservancy projects, in particular to a water-stop construction method for the horizontal joints of face panels of face dams. Background technique [0002] In high-face dam projects, the construction of the slab usually needs to divide the concrete slab into one, two or even three phases (such as the highest Shuibuya slab dam in China). Therefore, the concrete between the upper and lower slabs needs to be set For horizontal construction joints, the quality of joint treatment has a great influence on the anti-seepage effect. Therefore, the setting of the water stop between the seams is very critical for the panel. Under normal circumstances, horizontal construction joints are not provided with water stop, but horizontal straight or folded joints are used, and roughening is carried out between the joints. The anti-seepage effect o...

AI Technical Summary

Problems solved by technology

As a result, the problem of connection and anti-seepage of the horizontal joints of the face dam, that is, the problem of setting water-proof and anti-seepage on the facing surface

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