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Dismounting method for pipe joints of immersed tube tunnel

A technology of immersed tube tunnels and pipe joints, applied in water conservancy projects, artificial islands, underwater structures, etc., can solve problems such as low construction efficiency, unfavorable energy conservation and environmental protection, and high risks, and achieve the effect of safe demolition

Inactive Publication Date: 2016-09-07
CCCC FIRST HARBOR ENG
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Problems solved by technology

[0003] For the demolition technology of immersed tubes, there is no research on this technology in the world, especially the underwater demolition construction technology of large-scale immersed tubes. The implementation of this method requires large-scale equipment, low construction efficiency, high risk, and is not conducive to energy conservation and environmental protection

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  • Dismounting method for pipe joints of immersed tube tunnel
  • Dismounting method for pipe joints of immersed tube tunnel
  • Dismounting method for pipe joints of immersed tube tunnel

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with specific embodiments.

[0023] The overall construction idea of ​​the pipe joints of the immersed tunnel is introduced as follows. The dismantling of the pipe joints adopts the overall floating construction method, which can completely float the pipe joints from the seabed and haul them to the designated area. The floating of the pipe joints forms a closed space by closing the pipe joints of the tunnel, thereby generating buoyancy. After 0.1-0.3m, fix it with the square barge. The immersed tube is dragged to the designated location by tugboat, and then the pipe joint is lowered to the designated area by square barge lifting equipment.

[0024] The method for removing pipe joints of immersed tube tunnels of the present invention includes the steps of installing a steel sealing door, removing the end thrust section and removing the tunnel pipe joints.

[0025] The step of installing the steel seal...

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Abstract

The invention relates to a dismounting method for pipe joints of an immersed tube tunnels, and belongs to the technical field of hydraulic engineering. An immersed tube tunnel dismounting technology is absent at present, and therefore, a waste immersed tube tunnel cannot be dismounted, so that influence is generated on a marine environment. The dismounting method fills the technical blank. The dismounting method comprises a step of mounting a steel sealing door, a step of dismounting an end part anti-thrust section and a step of dismounting tunnel pipe joints. The dismounting method is used for dismounting the immersed tube tunnel.

Description

technical field [0001] The invention relates to a method for dismantling a pipe joint of an immersed tunnel, and belongs to the technical field of water conservancy engineering. Background technique [0002] The installation technology of immersed tubes originated earlier. The world's first test of immersed tube tunnel technology was carried out in London in 1810, and the waterproof problem could not be solved. The Detroit underwater railway tunnel in the United States was the first underwater tunnel used for transportation. It was built using immersed tube technology in 1910, marking the successful birth of the immersed tube method. The United States builds many tunnels in the bay. Since the water depth of the bay is generally greater than that of inland rivers, steel shell or double-layer steel shell structure (the steel shell is generally circular) is adopted, which is better than rectangular in terms of force. my country's immersed tube tunnel technology started late, b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/063
CPCE02D29/063
Inventor 冯海暴刘德进曲俐俐苏长玺张学俊
Owner CCCC FIRST HARBOR ENG
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