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

Abstract

The invention relates to an under-pressure rapid permanent plugging device for gas leakage of an underwater pipe gallery. The under-pressure rapid permanent 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; a jacking device is arranged on the base, a sleeve is arranged on the jacking device, and the sleeve is in threaded connection with a long pressing rod; a hollow pressing rod is arranged at the top end of the long pressing rod and communicates with a grouting pipe; the upper end of the hollow pressing rod is in threaded connection with a supporting plate and a blocking plate, the blocking plate covers the peripheral side of the leakage channel, and a blocking cavity exists between the blocking plate and the inner wall of the underwater pipe gallery; the top end of the hollow pressing rod extends into the blocking cavity; 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 rapid permanent plugging method for gas leakage of the underwater pipe gallery, which is used for the under-pressure rapid permanent plugging device for gas leakage of the underwater pipe gallery. According to the under-pressure rapid permanent plugging device, under the action of expansion bolts and slurry, the leakage channel can be permanently blocked, and the blocking structure is stable.

Description

technical field [0001] The invention relates to the technical field of leakage plugging of underwater pipe galleries, in particular to a pressurized rapid permanent plugging 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 bott...

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Problems solved by technology

[0010] In order to solve the problem that the existing plugging device is unstable and it is difficult to effectively, timely and permanently block the high-pressure gas, the present invention provides a fast and permanent plugging device and a plugging method for gas leakage in an underwater pipe gallery, aiming at The leakage of high-pressure gas can be effectively, timely and permanently blocked, while ensuring the stability of the plugging structure and good plugging effect

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