Dismantling Method of Tube Joints in Immersed Tube Tunnel

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

Active Publication Date: 2018-04-03
CCCC FIRST HARBOR ENG
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  • Abstract
  • Description
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  • Application Information

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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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  • Dismantling Method of Tube Joints in Immersed Tube Tunnel
  • Dismantling Method of Tube Joints in Immersed Tube Tunnel
  • Dismantling Method of Tube Joints in 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 ​​immersed tube tunnel joints is introduced as follows. When dismantling immersed tube joints, the first joints (that is, the joints at both ends of the tunnel) shall be removed first, and then the normal joints (except the two ends) shall be removed. section) removal. The dismantling of the pipe joint adopts the integral floating construction method, which can completely float the pipe joint from the seabed and haul it to the designated area. The floating of the pipe joint is to install the air bag or buoyant material in the pipe gallery of the immersed pipe, and provide buoyancy by inflating to realize the buoyancy aid construction. The dry string of the pipe joint is adjusted to 0.1-0.3m and then fixed with the square barge. The immersed tube is dragged to the designated location by tugboat, and then the pipe joint is lowered to ...

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Abstract

The invention relates to a dismantling method for pipe joints of an immersed tunnel and belongs to the technical field of water conservancy projects. Dismantling technologies for an immersed tunnel do not exist at present, so that the waste immersed tunnel cannot be dismantled, and the marine environment can be affected. The dismantling method for the pipe joints of the immersed tunnel fills the technical blank. The dismantling method for the pipe joints of the immersed tunnel comprises a preparation step before construction, a step of dismantling the pipe joints at the two ends of the immersed tunnel, and a step of dismantling the pipe joints of normal sections of the immersed tunnel. The dismantling method for the pipe joints of the immersed tunnel is used for dismantling the immersed 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...

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Application Information

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