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A construction device and construction method for connecting a subsea floating tunnel to an underground tunnel

A technology of floating tunnels and underground tunnels, applied in artificial islands, water conservancy projects, underwater structures, etc., to achieve the effects of solving deformation coordination problems, solving water stop problems, and reducing underwater operation links

Active Publication Date: 2021-01-19
DALIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the patent of the present invention is to provide a connection construction device and its construction method that can relatively better solve the problem of water-stopping and deformation coordination at the joint between the floating tunnel and the underground tunnel

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  • A construction device and construction method for connecting a subsea floating tunnel to an underground tunnel
  • A construction device and construction method for connecting a subsea floating tunnel to an underground tunnel

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specific Embodiment approach

[0026]The specific implementation method is as follows: first, the construction of the underground tunnel is carried out by the shield method or the mining method, and the track is laid and the support work is done during the tunneling process. When the tunnel is about 3~5m away from the sea water 2, the shield machine is evacuated, and the steel casing 6 prefabricated in the factory is transported to the working surface through the track, and pressed into the soil 3 by the static press. One end of the protective tube 6 enters the sea water 2 by 10-20 cm. After the erection is completed, a circle of freezing pipes 4 is arranged along the outer edge of the steel protective cylinder 6 and artificially cooled to form a freezing wall, which improves the impermeability of the soil 3 and acts as a water stop. Then, the bottom of the protective cylinder 10 is hoisted to the designed position by a crane, and underwater welding is performed by professionals, and the bottom of the protective ...

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Abstract

The invention provides a submarine floating tunnel and underground tunnel connection construction device and a construction method thereof. The device comprises a steel casing, a casing bottom plate and a floating tunnel immersed tube; the casing bottom plate and the steel casing are rigidly connected in a welded or hinged mode, and waterproofing during underground tunnel excavation is ensured; the movable surface of the casing bottom plate is mounted on the floating tunnel immersed tube through welding, and waterproofing during advancing of the first section of floating tunnel immersed tube is ensured; and the first section of the floating tunnel immersed tube and the steel casing are flexibly connected, and the problem of deformation compatibility between the steel casing and the floating tunnel immersed tube under the action of ocean current is solved. According to the technical scheme, most of work are conducted on the underground tunnel working face, the underwater operation linksare reduced, the economic efficiency and construction quality of the connection construction device are ensured to a certain extent, the construction cost is reduced, and the construction efficiencyand construction quality are improved.

Description

Technical field[0001]The patent of the invention relates to a tunnel connection construction device and a construction method thereof, in particular to a subsea floating tunnel and an underground tunnel connection construction device and a construction method thereof; it is mainly suitable for the construction of the connection between the underground tunnel and the suspension tunnel.Background technique[0002]The essence of the suspension tunnel is a tubular tunnel suspended underwater, also known as the Archimedes tunnel; it was first proposed in the early 20th century. In the 1960s, the British proposed the Archimedes Bridge in the Strait of Messina, Italy. Concept design. Italy Archimedes Bridge Company was established in 1984, one of its important businesses is to promote the design and realization of Archimedes Bridge. The Archimedes Bridge can be elliptical or circular in cross-section, with a length of several kilometers and a width of several tens of meters. It can be used f...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D29/16E02D29/067
CPCE02D29/067E02D29/16
Inventor 杨庆孔纲强刘志鹏杨钢
Owner DALIAN UNIV OF TECH
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