Anti-seepage structure of corridors at structural joint of rolling dam and construction method of anti-seepage structure

Abstract

The invention discloses an anti-seepage structure of corridors at a structural joint of a rolling dam and a construction method of the anti-seepage structure, and belongs to the technical field of water conservancy and hydropower engineering. The structure comprises a water stop part and two corridors A, wherein the two corridors A are connected through the water stop part, the two corridors A are formed by one-time concrete pouring, and the water stop part is integrally manufactured and formed and is prefabricated with the two corridors A. The corridors A are formed by one-time concrete pouring, and the water stop part is integrally manufactured and formed, so that the construction is simplified, the construction period is shortened, and the construction efficiency is improved. The water stop part is reliably connected with the corridors A, the ductility of the water stop part is good, the anti-seepage effect of the anti-seepage structure of the corridors is effectively guaranteed, and the water seepage treatment cost of the anti-seepage structure of the corridors in the later period is reduced. The concrete is prevented from entering a water stop groove through a chloroprene rubber rod, so that the water stop part is ensured to keep good flexibility, and water leakage at the butt joint of the two corridors A is avoided.

Description

Technical field[0001]The present invention relates to a corridor seam structure and a construction method thereof, which is a larvine dam structure, which belongs to the technical field of water conservancy and hydropower engineering.Background technique[0002]In the construction process of the rolling dam, a corridor is generally arranged to facilitate subsequent drainage drain on the laundry dam. The corridor is usually spliced ​​with a multi-shaker prefabricated corridor, and most of the diverting seams of the multi-chine prefabricated corridors are sealed. During the casting of the dam rolling concrete, the rubber stopper belt is easily deformed, causing the corridor to leak water on the seam, the later treatment is high, and the processing cost is high.[0003]The open number of the publication of CN106988269A, which discloses a high-hearted wall-shaped gallery, a water wall, which is, according to the control of the corridor, the distribution range of the zone and the gallery sli...

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Problems solved by technology

[0004] However, when this method is used for rolling compacted dams, the concrete pouring of the left corridor and the first-stage concrete pouring of the right corridor are completed first. After the concrete reaches the design strength, the two sections of W-shaped copper sheets are welded and connected, and then The second-stage concrete pouring cavity in the corridor to the right is filled with second-stage concrete. The construction process is cumbersome and the construction period is long

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