Large-diameter drainage pipeline construction assembly for water conservancy project and construction method

Abstract

The large-diameter drainage pipeline construction assembly comprises a drainage well, grooves, cement pipes and drainage pipes, the grooves are fixedly formed in the two sides of the drainage well, the cement pipes are installed in an inner cavity of the drainage well, the drainage pipes are installed in inner cavities of the grooves, and the drainage pipes are located at the bottom ends of the two sides of the cement pipes. A conical drainage mechanism is mounted in an inner cavity of the cement pipe; the arrangement of the conical drainage mechanism enables a water source to directly enter the inner cavity of the conical water collecting hopper when the water source is drained, so that water flow cannot wash the inner cavity wall of the drainage well, the drainage well and the cement pipe are protected, and the arrangement can also prevent a special polluted water source from entering the inner cavity of the cement pipe and permeating into soil to influence the environment. And the conical drainage mechanism has a certain protection effect, so that if the grate is accidentally separated from the top of the drainage well, the conical water collecting hopper has an anti-falling effect, and the safety is improved.

Description

technical field [0001] The invention relates to the technical field of water conservancy projects, in particular to a construction component and a construction method of a large-diameter drainage pipe for water conservancy projects. Background technique [0002] Drainage pipes are mainly responsible for the drainage of water conservancy projects such as rainwater, sewage, and farmland drainage and irrigation. Drainage pipes are divided into plastic drainage pipes, concrete pipes (CP) and reinforced concrete pipes (RCP). Large diameter drainage pipe is a new type of plastic drainage pipe developed in the 1990s, and it has been widely used in developed countries. Because of its corrosion resistance, high strength, long life (more than 50 years), good sealing without leakage, light weight, convenient construction, compression and impact resistance, smooth inner wall, large water delivery, no scaling in the pipe, basically no need to dredge, It has more than ten advantages such...

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Problems solved by technology

[0003] However, the water flow of the large-diameter drainage pipe installed at the existing drainage well directly scours the inner cavity wall of the drainage well, which seriously damages the inner cavity wall of the drainage well under long-term scouring, and the special sewage is directly discharged into the concrete drainage well and is easy to infiltrate Diffusion of pollution into the soil

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