A prefabricated concrete drainage structure inside a rockfill dam body and its construction method

A prefabricated concrete and drainage structure technology, which is applied in the direction of infrastructure engineering, dams, barrages, etc., can solve problems such as inability to overhaul, affect the safety of the dam body, and high dam infiltration line, so as to achieve lower water level, reliable drainage effect and low cost Effect
CN106337425BActive Publication Date: 2018-11-13POWERCHINA XIBEI ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
POWERCHINA XIBEI ENG
Publication Date
2018-11-13

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Abstract

The invention relates to the technical field of dam engineering, in particular to a precast concrete drainage structure in a dam body of a rock-fill dam. The drainage structure comprises a precast concrete drainage body horizontally arranged in the dam body of the rock-fill dam; the dam body of the rock-fill dam is provided with a seepage line formed due to leakage of the dam body, and the precast concrete drainage body is located below the seepage line of the dam body; the precast concrete drainage body is of a hollow reinforced concrete thin-wall structure and is formed by connecting a plurality of precast drainage body blocks, the hollow portion of the thin-wall structure is a drainage gallery, the hollow reinforced concrete thin-wall structure is provided with drainage holes penetrating the interior and the exterior of the hollow reinforced concrete thin-wall structure; and the drainage holes are communicated with the drainage gallery. According to the precast concrete drainage structure in the dam body of the rock-fill dam, the precast concrete drainage body is adopted in the dam body of the concrete face rock-fill dam and is internally provided with the drainage holes and the drainage gallery, the drainage holes are used for draining accumulated water in the dam body, and the accumulated water is gathered in the drainage gallery and is drained out of the dam body through the drainage gallery; and the precast concrete drainage structure in the dam body of the rock-fill dam is simple, practical, economic and reliable in drainage effect.
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Description

technical field

[0001] The invention relates to the technical field of dam engineering, in particular to a prefabricated concrete drainage structure inside a rockfill dam body. Background technique

[0002] Rockfill dams are filled with granular rockfill materials through layered rolling, including concrete face rockfill dams and core rockfill dam shell areas. In order to ensure the seepage stability of rockfill materials in the dam body and reduce Wetting line, for the rockfill material with poor water permeability, the rockfill material after removing fine particles is generally used as the drainage body material in the dam body. Under the long-term action of seepage water flow, fine particles in the rockfill materials are often lost or retained in the drainage body, which seriously affects the drainage effect of the drainage body, makes the dam body soak line rise, and cannot be repaired, seriously affecting the safety of the dam body. Therefore, in order to solve the dr...

Claims

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