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Title:
METHOD OF EXCAVATING GROUND
Document Type and Number:
Japanese Patent JP2007314939
Kind Code:
A
Abstract:

To provide a method of excavating a ground by continuously excavating a vertical shaft and a level drift with different diameters by using the minimum facilities.

After a vertical shaft 3 is excavated by using a TBM 5 for vertical shaft, a level drift 33 of a predetermined length is excavated from near the lower end of the vertical shaft 3. After the cutter head 37 of the TBM for level drift is carried in the level drift 33 from the ground through the vertical shaft 3, a part of the front body of the TBM 5 for vertical shaft is removed and pulled into the level drift 33, and assembled to the rear of the cutter head 37. Next, the thrust jack 27 of the TBM 5 for vertical shaft is removed, pulled into the level drift 33, and fitted to the rear of a cutter head support 19. The intermediate body, the rear body, and the tail part of the TBM for level drift are carried from the ground into the level drift 33 and the TBM for level drift is assembled. While a following cart to the TBM 5 for shaft is pulled into the level drift 33, the level drift 33 is further excavated by using the TMB for level drift and the following cart.

COPYRIGHT: (C)2008,JPO&INPIT


Inventors:
MATSUI NOBUYUKI
ITO NORIYUKI
SATO MASAAKI
NISHINO TATSUYA
YOKOTA YORIHAYA
OKUTSU KAZUO
ICHIKAWA YOSHIKAZU
TERADA SHINICHI
MORIOKA KYOICHI
Application Number:
JP2006142386A
Publication Date:
December 06, 2007
Filing Date:
May 23, 2006
Export Citation:
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Assignee:
KAJIMA CORP
KOMATSU MFG CO LTD
International Classes:
E21D9/10; E21D1/03; E21D9/00; E21F13/00
Domestic Patent References:
JPH10252378A1998-09-22
JP2006027899A2006-02-02
JP2001159293A2001-06-12
Attorney, Agent or Firm:
Seiichi Inoue