Immersed tube section separating device for seabed immersed tunnel

Abstract

The invention relates to the technical field of installation of seabed immersed tunnels, in particular to an immersed tube section separating device for a seabed immersed tunnel. The immersed tube section separating device for the seabed immersed tunnel comprises an active separating unit and a passive separating unit; a separating jack is arranged at one end of the active separating unit and is used for applying an axial thrust to the passive separating unit, so that the active separating unit and the passive separating unit move relatively, and two immersed tube sections which are connected with each other and are connected with the active separating unit and the passive separating unit are separated from each other; the immersed tube sections cannot be damaged in a separating process; a GINA water-stop belt cannot turn sideward; end steel shells and end sealing doors are not affected; and the distance between the two immersed tube sections are increased as much as possible, and a sufficient safe distance is reserved for follow-up re-floating and twisting movement. The immersed tube section separating device is simple in structure, clear in stress and convenient to design and manufacture.

Description

technical field [0001] The invention relates to the technical field of installation of subsea immersed tube tunnels, in particular to an immersed tube section separation device for subsea immersed tube tunnels. Background technique [0002] At present, the installation of bottom immersed tube tunnels has many difficulties and characteristics such as difficult construction, many restrictive conditions, and many influences by severe weather conditions. Among them, the redisengagement of the installed immersed tube joints of the immersed tube tunnel is an important step in the installation process of the subsea tunnel. There is no special device for the separation of immersed tube joints in the prior art. In the case of immersed tube joints, the cables are usually tied to the post-installed pipe joints, and then a large-scale machine is used to forcibly stretch the two immersed tube joints that fit together. However, when the cables are used for splitting, it will affect The s...

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Problems solved by technology

[0002] At present, the installation of bottom immersed tube tunnels has difficulties and characteristics such as difficult construction, many restrictive conditions, and many influences from bad weather conditions.

Among them, the re-disengagement of the installed immersed tube joints of the immersed tube tunnel is an important step in the installation process of the subsea tunnel. There is no special device for the separation of immersed tube joints in the prior art. In the case of the immersed tube section, the cable is usually tied to the post-installed tube section, and then a large machine is used to forcibly stretch the two immersed tube sections that fit together. However, when the cable is used for splitting, it will affect The stability of the immersed tube joint structure such as GINA waterstop, end steel shell and end seal door may also cause damage to the immersed tube joint

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