Title:
六角形セグメント及び六角形セグメントの接合構造
Document Type and Number:
Japanese Patent JP7315444
Kind Code:
B2
Abstract:
To provide a hexagonal segment that can prevent damage to the water-stopping function of a sealing material along a thickness direction and can obtain excellent water-stopping performance around the hexagonal segment.SOLUTION: A hexagonal segment 12 for forming a shield tunnel lining 11 by connecting and assembling a tunnel in an axial direction X and a circumferential direction Y comprises: an outer peripheral groove 21a and an inner peripheral groove 21b which are provided at two locations separated in a thickness direction over the entire circumference in a plan view and in which first and second sealing materials 18a and 18b are arranged; and a vertical groove 21c which communicates with the outer peripheral groove 21a and the inner peripheral groove 21b and has a third sealing material 18c connected to the first and second sealing materials 18a and 18b arranged therein. The vertical groove 21c is provided on a wellhead side diagonal joint surface 16, and is not provided on a face side joint surface 13 and a face side diagonal joint surface 15.SELECTED DRAWING: Figure 1
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Inventors:
Shigeki Kinoshita
Takahisa Sokabe
Takahisa Sokabe
Application Number:
JP2019221662A
Publication Date:
July 26, 2023
Filing Date:
December 06, 2019
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21D11/08; E21D11/38
Domestic Patent References:
| JP2004204622A | ||||
| JP2007023541A | ||||
| JP6158998A |
Attorney, Agent or Firm:
Patent Attorney Showa International Patent Office
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