Immersion ship special for immersed tube tunnel, and using method of immersion ship

Abstract

The invention discloses an immersion ship special for an immersed tube tunnel. The immersion ship comprises a gantry box girder; the two ends of the gantry box girder are fixedly connected with hull buoyancy tanks correspondingly, the side wall of the upper end of the gantry box girder is fixedly connected with two symmetrically-arranged hydraulic winches, and the side wall of the upper end of thegantry box girder is fixedly connected with two symmetrically-arranged pulley block hanging brackets; the two pulley block hanging brackets are located on the two sides of the hydraulic winches correspondingly; and the gantry box girder and the side walls of the upper ends of the hull buoyancy tanks are fixedly connected with a plurality of mooring bollards correspondingly, and handrails are fixedly connected to the side walls of the upper ends of the hull buoyancy tanks at the gantry box girder correspondingly. The invention discloses a using method of the immersion ship special for the immersed tube tunnel, immersion of each tube segment needs to be cooperatively operated by two immersion ships, and the immersion ships are arranged at the head end and the tail end of the single tube segment; and the tunnel tube segments can be immersed in inner rivers with the small river width, shallow water, the large flowing speed, dense shipping and the large water level fall, meanwhile the tubesegment immersion period is also shortened greatly, and the butt-joint precision is improved.

Description

technical field [0001] The invention relates to the technical field of immersed tube tunnels, in particular to a dedicated sunken ship for immersed tube tunnels and a method for using the same. Background technique [0002] Immersed tube tunnel is an underwater tunnel built through the processes of prefabrication in dock, towing and floating, sinking and docking, foundation treatment, backfilling and covering. The top cover is shallow, the tunnel length is short, and the connection with the roads on both sides of the water area is more flexible, which can greatly save land resources in the central urban area. It is one of the main methods for cities to build underwater tunnels in inland rivers. However, inland rivers often have narrow channels, shallow water depth, high flow velocity, intensive shipping, and large water level drop, which brings great difficulties to the floating and sinking of pipe sections, and even affects construction safety. The use of large-scale offsh...

AI Technical Summary

Problems solved by technology

However, inland rivers often have narrow channels, shallow water depth, high flow velocity, intensive shipping, and large water level drop, which brings great difficulties to the floating and sinking of pipe sections, and even affects construction safety. Use of large-scale offshore floating and sinking equipment

The lack of special equipment for sinking tube sections of immersed tube tunnels suitable for inland rivers with turbid water and turbulent flow conditions has resulted in low efficiency of tube joint sinking and docking and difficult precision control, which to a certain extent limits the use of immersed tube tunnels in cities in the middle and upper reaches of rivers. Therefore, we propose a dedicated sunken ship for immersed tube tunnels and its use method to solve the above problems

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