Assembled plastic steel sheet pile structure for dam piping treatment and using method of assembled plastic steel sheet pile structure

By assembling the plastic steel sheet pile structure and its usage methods, the problem of rapid formation of seepage interception paths in the dam pipeline disposal is solved, and efficient dam pipeline disposal and stability are achieved, and the changes in the dam pipeline channel at different depths are adapted to the changes.

CN120443600APending Publication Date: 2025-08-08HOHAI UNIV
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Patent Information

Application Number
CN202510927000.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2025-08-08

AI Technical Summary

Technical Problem

The prior art is difficult to quickly form effective seepage interception paths and cannot adapt to changes in pipe surge channels at different depths, resulting in low efficiency in handling dam pipe surges and high resource consumption.

Method used

The assembled plastic steel sheet pile structure is adopted, including a permeable filter layer and a reverse filter layer, and the mortise and tenon structure and support base are used to achieve rapid assembly. The seepage path is extended by inserting the plastic steel sheet piles in a graded manner, adapting to geological changes, and forming continuous protection.

Benefits of technology

It improves the efficiency of dam pipe surge treatment, reduces seepage and sand carrying, enhances the stability and anti-shrinkage capacity of the dam, and reduces construction difficulty and resource consumption.

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Abstract

The invention relates to the technical field of dam piping treatment, in particular to an assembled plastic steel sheet pile structure and a using method. The structure comprises at least one group of plastic steel sheet piles which are arranged in an embankment foundation on the backwater side of an embankment body, and the first group of plastic steel sheet piles are located between a piping outlet and the embankment body to cut off a piping channel. The plastic steel plate piles are assembled through mortise and tenon structures, tenons and tenon buckles are connected in a matched mode, and supporting bases with inserting plates are arranged to assist in vertical installation. The surface of the embankment foundation is covered with a permeable filter layer and an inverted filter layer, the permeable filter layer is made of geotechnical cloth, and the inverted filter layer is composed of a fine gravel layer and an overlying coarse gravel layer. The using method comprises the steps that an original piping outlet is positioned, and the first set of sheet piles are inserted; according to water seepage and sand carrying conditions, inserting subsequent sheet piles between the first group of sheet piles and the dike body in a progressive increase manner; if a new outlet appears, the insertion direction and depth of the sheet pile are adjusted according to the outlet position. The seepage path is prolonged by inserting the sheet piles with different depths in a graded mode, the filtering layer is matched for intercepting gravel, and the problem that traditional treatment efficiency is low is solved.
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