Title:
トンネル支保工
Document Type and Number:
Japanese Patent JP7149714
Kind Code:
B2
Abstract:
To provide a tunnel support that can cope with expansion of natural ground and can reduce the number of man-hours to install.SOLUTION: A tunnel support according to the present invention has a support material arranged along a wall surface of a tunnel to form an arch portion, and a joint portion in which the support material slides in an extendable manner. The joint portion is configured by alternately stacking two support materials extending from one end of the arch portion and two support materials extending from the other end.SELECTED DRAWING: Figure 1
Inventors:
Shogo Nagaoka
Matsuoka Kaoru
Matsuoka Kaoru
Application Number:
JP2018017306A
Publication Date:
October 07, 2022
Filing Date:
February 02, 2018
Export Citation:
Assignee:
jfe building materials corporation
International Classes:
E21D11/22
Domestic Patent References:
| JP39037006Y1 | ||||
| JP2000303797A | ||||
| JP58194298U | ||||
| JP2003148091A |
Foreign References:
| US2713774 |
Attorney, Agent or Firm:
Patent Attorney Corporation Kisa Patent and Trademark Office