Title:
SARDINE BONE CONSTRUCTION METHOD FOR LARGE CROSS SECTION TUNNEL
Document Type and Number:
Japanese Patent JP3833403
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To safely and rapidly excavate a large cross section tunnel by previously reinforcing and improving the natural ground over the whole length of a construction area of a tunnel.
SOLUTION: After a topped guide pit 2 is excavated to pierce the whole length of a construciton area of a tunnel 1, bend drilling is performed along the peripheral edge of cross section of the tunnel 1 at specified space from the topped guide pit 2. After inserting filling pipes in drilled holes, bent steel pipes 3 are pulled out, and filling material is filled from the filling pipes to construct an artificial natural ground arch 4. The tunnel 1 is then excavated, and a hanging form 6 is advanced to place concrete for secondary lining, thus excavating the tunnel.
Inventors:
Hideo Fujimoto
Shigehito Uji
Takeuchi Hideki
Yoshio Mitarai
Otsu Souki
Ao Takebayashi
Masakazu Ochiai
Takefumi Yamamoto
Yoshitomo Kinoshita
Shigehito Uji
Takeuchi Hideki
Yoshio Mitarai
Otsu Souki
Ao Takebayashi
Masakazu Ochiai
Takefumi Yamamoto
Yoshitomo Kinoshita
Application Number:
JP33802398A
Publication Date:
October 11, 2006
Filing Date:
November 27, 1998
Export Citation:
Assignee:
Shimada Iwano
International Classes:
E21D9/04; E21D9/00; E21D9/10; E21D11/00; E21D11/10; (IPC1-7): E21D9/04; E21D9/00; E21D9/10
Domestic Patent References:
| JP11159275A |
Attorney, Agent or Firm:
Tetsuya Mori
Yoshiaki Naito
Cui Shu Tetsu
Yoshiaki Naito
Cui Shu Tetsu