Concrete anti-seepage wall and construction method

Abstract

The invention provides a concrete cutoff wall and a construction method. A fabricated guide wall is arranged on a pressure-bearing bottom plate, a lateral buttress is arranged on the outer side of thefabricated guide wall, a vertical anchor bar is arranged between the fabricated guide wall and a foundation soil layer, a fastening tie piece is arranged in a tie piece penetrating arranging hole, and a transverse pretension force is exerted to the fastening tie piece; after the excavation of a channel is completed, a hanging beam supporting column is arranged in a light backfill body, and the side wall of the channel is subjected to top pressing by applying air pressure or water pressure to a supporting bag; an outer tube control body and a top pressure connecting plate are arranged on the upper surface of a positioning bearing beam, an inner tube control body is arranged on the lower surface of the positioning bearing beam, rigid elastic sheets and rigid upright rods are arranged on theouter side of inner-layer steel tubes in the circumferential direction, and circumferential sealing layers are arranged outside the rigid upright rods; and bracket upright posts are arranged on a sliding platform, a pouring platform plate is arranged between the bracket upright posts, and a cover plate connecting rod and a sliding hopper are arranged on the lower surface of the pouring platform plate. According to the construction method, the on-site construction quality and efficiency can be improved, the on-site construction difficulty is reduced, and the stability of the side wall of the channel is improved.

Description

technical field [0001] The invention relates to the field of water conservancy engineering, in particular to a concrete anti-seepage wall and a construction method that can improve the quality and efficiency of on-site construction, reduce the difficulty of on-site construction, and improve the stability of the side wall of a channel, and is suitable for anti-seepage construction projects. Background technique [0002] Concrete cut-off walls not only have the characteristics of strong deformation adaptability, but also have unique advantages in anti-seepage performance. At present, they have been widely used in water conservancy project construction and reinforcement construction. During the construction of the concrete cut-off wall, its quality control mainly focuses on the construction quality of the guide wall, the condition of the groove and the stability control of the groove wall, the quality of the concrete pouring, the setting and pulling out of the locking pipe, etc....

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Problems solved by technology

[0003] At present, although the technical achievements of the engineering field in the field of concrete cut-off walls have achieved good engineering construction results under suitable working conditions, how to improve the layout efficiency and shape parameters of the guide wall, improve the quality of concrete pouring, and strengthen the groove wall The research results on stability and improving the airtightness of the lock pipe are still difficult to meet the needs of engineering practice. Engineering problems such as unstable groove walls, difficult positioning of the guide wall, and poor airtightness of the lock pipe are not uncommon.

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