One-way water guide anti-clogging drain hole structure

Abstract

The invention relates to a one-way water guide anti-clogging drain hole structure. The method is suitable for water-passing buildings in civil engineering, hydropower and water conservancy projects. According to the technical scheme, the one-way water guiding anti-clogging drainage hole structure is characterized by comprising a drainage pipe inserted into a drainage hole in a bottom plate of a water passing building; the orifice water guide protective cover is mounted at the upper end of the drain pipe; when the water pressure in the surface of the water-passing building is greater than the water pressure outside the drainage hole, the orifice water-guiding protective cover can tightly press and seal the pipe orifice at the upper end of the drainage pipe under the action of pressure difference; when the water pressure in the surface of the water passing building is smaller than the water pressure outside the drainage hole, the hole opening water guiding protection cover can be lifted under the action of pressure difference, and therefore a drainage channel communicating the drainage pipe with a water passing channel of the water passing building is formed between the hole opening water guiding protection cover and the drainage pipe.

Description

technical field [0001] The invention relates to a unidirectional water-guiding anti-silting and blocking drainage hole structure. It is suitable for water-passing buildings in civil engineering, hydropower and water conservancy projects. Background technique [0002] In civil engineering, hydropower and water conservancy projects, in order to reduce the water pressure outside the structure and reduce the uplift pressure of the structure foundation, drainage holes are often set on the bottom plate or side wall of the water-passing building. For example, the bottom plate of hydraulic tunnel, the bottom plate of open water channel, the pressure relief hole or drainage hole on the bottom plate of sluice stilling basin. Conventional drainage hole design is mainly divided into rock-based PVC permeable pipes, soil-based drainage holes plus reverse filtration facilities. There are a few drawbacks to this type of drain hole: [0003] 1. It does not have a one-way water guide funct...

AI Technical Summary

Problems solved by technology

[0003] 1. It does not have a one-way water guide function. When the water pressure outside the bottom plate of the hydraulic structure is low, the water flow inside the water-passing structure may form a brush against the bottom plate foundation through the drainage holes, affecting structural safety;

[0004] 2. With the operation of water-passing buildings, the sediment and silt carried by the water flow often block the drainage holes, resulting in the failure of the drainage holes, which in turn reduces the ability of the building floor structure to resist external water pressure, causing the building floor to warp, crack, even unstable;

[0005] 3. Once the drainage hole fails, it is difficult to repair and replace. It can only be dismantled and rebuilt as a whole, which not only affects the operation of the building but also causes a large economic impact.

The above-mentioned drainage hole structure is usually pre-buried inside the structure, and it is difficult to repair after failure, which may cause greater economic losses or greater safety hazards

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