Bank closure method based on integral assembly type double-ridge closure gap bottom protection structure

By using the prefabrication and precise casting method of the overall assembled double-slope bottom protection structure, the problems of poor erosion resistance and high construction difficulty of the bottom protection structure under high flow velocity riverbed conditions were solved, and the stability of materials and the rapid and safe completion of the closure progress were achieved.

CN122257375APending Publication Date: 2026-06-23CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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Patent Information

Application Number
CN202610698909.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-20
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

The existing dam protection structure has poor erosion resistance under high flow velocity and thick overburden conditions. The thrown material is easily lost, making construction difficult and affecting the closure progress and safety. Furthermore, the construction process cannot control the throwing range and distribution, resulting in poor riverbed roughening effect.

Method used

The project adopts an integrally assembled double-sill bottom protection structure. By prefabricating reinforced gabions during the dry season a year before the closure, and using GPS and floating object positioning for precise throwing, a continuous and high-roughness protection system is formed. Combined with the continuous throwing of large stones and reinforced gabions, the project uses the full-section advancement method and the protruding upstream corner method to close the gap.

Benefits of technology

It improved the impact resistance of the dumped materials, reduced the risk of loss and collapse, shortened the construction time, ensured the closure progress and the stability of the riverbed, and reduced the construction intensity and difficulty.

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Abstract

The invention belongs to the technical field of closure construction of water conservancy and hydropower engineering, and particularly relates to a dike closure method based on an integrally-assembled double-ridge closure gap bottom protection structure. The integral bottom protection structure formed by rigidly connecting the bottom protection section and the two stone blocking ridge sections is prefabricated and precisely thrown in the dry season of the year before closure, the standardized steel bar gabion serves as a basic unit, a continuous plate type whole is formed through internal and external dual connection, and high impact resistance and stone blocking and foot protecting capacity are achieved. Underwater precise throwing is realized through particle size and impact distance calculation, throwing test and GPS combined positioning. And after bottom protection construction is completed, embankment pre-occupation is implemented in the dry season of the next year, large stones and steel bar gabions are adopted for continuous throwing in the closure stage, the stability of throwing materials can be improved, embankment head collapse is completely eradicated, and safe and rapid closure is achieved. According to the invention, the problems of easy loss, low precision, interference in flood discharge and the like of the traditional scattered bottom protection can be solved, and the safety and efficiency of closure under complex riverbed conditions are greatly improved.
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