Sealing structure of high-water-pressure river-crossing sea-crossing shield tunnel segment joints

Abstract

The invention relates to a sealing structure for high-water-pressure river-crossing sea-crossing shield tunnel segment joints. The sealing structure includes elastic sealing gaskets installed at the adjacent tunnel segment joints respectively, the lower end faces of the elastic sealing gaskets are installed in installation grooves in one tunnel segment joint, the upper end faces of the elastic sealing gaskets press against each other tightly in a contact mode, and the elastic sealing gaskets are bilaterally symmetrical about the connection line of the midpoints of the lower end faces and the upper end faces; each elastic sealing gasket includes a sealing gasket body, end parts and column parts, wherein the end parts and the column parts and the sealing gasket body are integrally formed, and the end parts and the column parts are arranged on the lower end face; a first row of through holes and a second row of through holes are formed side by side in each sealing gasket body, the end parts are arranged on the left side and the right side of each elastic sealing gasket, a plurality of lower end face grooves are symmetrically formed between the two side end parts on each lower end face, and a plurality of column parts are formed among the lower end face grooves. Compared with the prior art, the sealing structure has the advantages of being optimized, small in assembly force, capable of resisting high pressure, waterproof, convenient to manufacture and form and the like.

Description

technical field [0001] The invention relates to the engineering field of high-water-pressure cross-river electric power shield tunnels, in particular to a sealing structure for segment joints of high-water-pressure cross-river and sea-cross shield tunnels. Background technique [0002] As an important element of the transportation network, cross-river and sea-crossing tunnels play and occupy an important role in both actual engineering and display life, and shield tunnels are widely used and Keep promoting. In the face of complex natural engineering geology and hydrogeological conditions, electric power shield tunnels often encounter high water pressure engineering environments, and electric power tunnels have high requirements for tunnel waterproofing due to their special functions. Segment joint waterproofing is the key part. [0003] At present, non-expandable synthetic rubber is usually used in actual engineering, mainly to use the joint material to achieve the purpose...

AI Technical Summary

Problems solved by technology

However, due to the large buried depth of the high-water-pressure electric shield tunnel, the waterproof ability of the elastic gasket is relatively high.

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