Construction method of hydrophobic structure of water delivery culvert pipe joint expansion joint

Abstract

The invention provides a construction method of a hydrophobic structure of a water delivery culvert pipe joint expansion joint. A water stop belt and filler are arranged at the expansion joint, wherein a plurality of hoses are arranged on the inner side of the filler in the circumferential direction, a plurality of water inlet holes which are arranged at intervals in the length direction are pre-formed in the side walls of the hoses, and the hoses are wound with geotechnical cloth in advance; every two adjacent hoses are connected through two working openings of a tee joint, so that all the hoses are connected into a ring shape; the last working opening of the tee joint extends towards the radial inner side of the expansion joint and is connected with a one-way valve, and the water outletend of the one-way valve communicates with the interior of a pipe joint; and the expansion joint on the radial inner side of the tee joint is continuously filled with the filler and fixed. When the method is applied to a water delivery tunnel rich in underground water with pressure, if the pipe joint bears the pressure of the underground water, the underground water can enter the hoses through thewater inlet holes, then is guided into the one-way valve through the tee joint and is discharged into the pipe joint, so that the water pressure outside the pipe joint is dredged, and the water stopfiller is prevented from being damaged.

Description

technical field [0001] The invention relates to a method for constructing a hydrophobic structure of an expansion joint of a pipe joint of a water delivery culvert. Background technique [0002] Water-stop fillers are installed at the expansion joints of the pipe joints of the water delivery tunnel to prevent the water in the pipe joints from leaking from the outside of the expansion joints to the outside of the pipe joints. Therefore, the water-stop fillers generally only have a one-way waterproof function. [0003] However, in a water delivery tunnel rich in pressurized groundwater, under the pressure of groundwater outside the pipe joint, the groundwater will seep into the pipe joint through the expansion joint of the pipe joint, resulting in the destruction of the water-stop filler in the expansion joint, forming a Permeate the channel, causing a large amount of water in the pipe to leak out. [0004] At present, in view of the above situation, those skilled in the art ...

AI Technical Summary

Problems solved by technology

[0003] However, in a water delivery tunnel rich in pressurized groundwater, under the pressure of groundwater outside the pipe joint, the groundwater will seep into the pipe joint through the expansion joint of the pipe joint, resulting in the destruction of the water-stop filler in the expansion joint, forming a Osmotic channels, causing a large amount of water in the pipe to leak out

[0004] At p...

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