Hydrophobic structure of water delivery culvert pipe joint expansion joint

Abstract

The invention provides a hydrophobic structure of a water delivery culvert pipe joint expansion joint. A water stop belt and a filler are fixed at the position of an expansion joint, a plurality of hoses are arranged in the filler in the circumferential direction of the expansion joint, a plurality of water inlet holes which are arranged at intervals in the length direction are formed in the sidewalls of the hoses, and the hoses are wound in geotechnical cloth; every two adjacent hoses are connected through two working ports of one tee, so that all the hoses are connected into an annular shape; and the last working port of each tee penetrates, towards the radial inner side of the expansion joint, out of the filler to extend and is connected with the water inlet end of one one-way valve, and the water outlet ends of the one-way valves communicate with the interior of a pipe joint. When the structure is applied to a water delivery tunnel rich in pressurized underground water, if the pipe joint externally bears the pressure of the underground water, the underground water enters the hoses via the water inlet holes, then is introduced into the one-way valves through the tee joints, andis discharged into the pipe joint, so that the water pressure outside the pipe joint is dredged, and the water filler is prevented from being damaged.

Description

technical field [0001] The invention relates to a hydrophobic structure of expansion joints of pipe joints in water culverts. 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 generally solve the problem by strength...

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 present, in view of the above situation, those skilled in the art generally solve the problem by strengthening the strength and firmness of the water-stop filler. However, because the width of the expansion joint will expand and contract, it is impossible for the water-stop filler to take into account the strength, elasticity and firmness. degree, so the leakage problem still cannot be completely solved

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