Under-pressure plugging device and plugging method for gas leakage of underwater pipe gallery

Abstract

The invention relates to an under-pressure plugging device for gas leakage of an underwater pipe gallery. The under-pressure plugging device comprises the underwater pipe gallery and a leakage channel, wherein a base is arranged in the underwater pipe gallery in the diagonal position of the leakage channel, and a jacking device is arranged on the base; a sleeve is arranged on the jacking device and is in threaded connection with a pressing rod piece; and the top end of the pressing rod piece is in threaded connection with an arc-shaped supporting plate, a flexible blocking plate is bonded to the supporting plate, a blocking strip is arranged on the edge of the blocking plate and surrounds the peripheral side of the leakage channel, and the peripheral side of the supporting plate is connected with the underwater pipe gallery through bolts. The invention further relates to an under-pressure plugging method for gas leakage of the underwater pipe gallery, which is used for the under-pressure plugging device for gas leakage of the underwater pipe gallery. According to the under-pressure plugging device, the jacking device is matched with the pressing rod piece to temporarily block the leakage channel, expansion bolts are connected with the supporting plate and an upper pipe piece, the leakage channel can be permanently blocked, blocking construction is convenient and fast, the blocking structure is stable, and rapid emergency treatment can be conducted on gas leakage of the pipe gallery.

Description

technical field [0001] The invention relates to the technical field of leakage plugging of underwater pipe galleries, in particular to a pressure sealing device and a plugging method for gas leakage of underwater pipe galleries. Background technique [0002] With the continuous increase of ground traffic pressure and the continuous development of underwater construction technology, underwater tunnels such as crossing the sea / river can solve cross-river traffic difficulties, relieve inter-city traffic pressure, promote inter-city economic and cultural exchanges, and The advantages of small construction impact and environmental protection have been widely used in the development of urban and regional transportation networks in my country. [0003] In the construction of underwater tunnels, the underwater geological conditions are complex and changeable, and many tunnel projects need to cross the soft soil layer rich in high-pressure harmful gases at the bottom of rivers and lak...

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the existing sealing structure is difficult to effectively and timely block high-pressure gas, and the sealing is unstable, the present invention provides a pressure sealing device and a sealing method for gas leakage of underwater pipe gallery, aiming at Leakage of high-pressure gas can be effectively blocked, while ensuring the stability of the plugging structure

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