Title:
CONSTRUCTING METHOD FOR LARGE-DIAMETER TUNNEL
Document Type and Number:
Japanese Patent JP3244202
Kind Code:
B2
Abstract:
PURPOSE: To construct large scale underground space such as a large-diameter tunnel in weak ground by using a comparatively small machine and by minimizing influence upon a ground structure and to excavate any cross sectional shape and any size.
CONSTITUTION: Leading screw tunnels 2 for surrounding the excavated inner surface of a large-diameter tunnel 1 are provided on a plurality of places in the constructing large-diameter tunnel 1 in its shaft line direction. Then, small- diameter tunnels 4 for communicating the leading screw tunnels 2 with the large-diameter tunnel in its shaft line direction are adjoined to one another in the direction for surrounding the excavated inner surface of the large- diameter tunnel 1 for excavation. The small-diameter tunnels 4 and the leading screw tunnels 2 form the outer shell part of the large-diameter tunnel. Then, their insides are excavated.
Inventors:
Shigeru Harada
Nishizawa Izumi
Tadayuki Hanamoto
Akihiko Tsuzuku
Norio Mitani
Nishizawa Izumi
Tadayuki Hanamoto
Akihiko Tsuzuku
Norio Mitani
Application Number:
JP10409093A
Publication Date:
January 07, 2002
Filing Date:
April 30, 1993
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
E21D9/00; E21D9/04; E21D9/06; E21D13/00; E21D13/02; (IPC1-7): E21D9/00; E21D9/04; E21D13/02
Domestic Patent References:
| JP396600A | ||||
| JP4330121A | ||||
| JP62225689A | ||||
| JP317399A |
Attorney, Agent or Firm:
Tadashi Hamamoto (1 person outside)