Title:
【発明の名称】トンネル掘削方法
Document Type and Number:
Japanese Patent JPH07116917
Kind Code:
B2
Abstract:
PURPOSE:To reduce boring remain or scaling by photogaphing a working face with a camera, processing the image so as to extract a face of discontinuity and a crack on the working face, and modifying a boring pattern based on the result. CONSTITUTION:Geological information of natural ground where a tunnel boring work is performed is collected by investigation in advance, and the position of the face of discontinuity 4 of the natural ground such as fault or joint is inputted to a computer as three-dimensional coordinates data, where the origin of coordinates is set as the S.L center point of a pit mouth, the horizontal axis being at right angles to due north is X-axis, the vertical axis is Y-axis, and the due north direction is Z-axis respectively set. Next, a boring pattern on the working face 2 is designed based on the information of investigation in advance, all the boring positions are inputted to the computer as X, Y coordinates on the working face. The working face is photographed with a steel camera 1 or a CCD video camera, the picture quality of the image is improved by various processes in an image processing device, appearance condition of the face of discontinuity in the succeeding working face is estimated, and the boring position is marked by laser beam.
Inventors:
WADA SETSU
NAKAZAWA JUICHI
ORITA TOSHIAKI
YAMAMOTO TOSHIO
YUNOKI KOJI
MURABAYASHI ATSUSHI
NAKAZAWA JUICHI
ORITA TOSHIAKI
YAMAMOTO TOSHIO
YUNOKI KOJI
MURABAYASHI ATSUSHI
Application Number:
JP4482692A
Publication Date:
December 18, 1995
Filing Date:
March 02, 1992
Export Citation:
Assignee:
KONOIKEGUMI KK
International Classes:
E21D9/00; E21D9/10; G01C15/00; G06T1/00; G06T7/00; (IPC1-7): E21D9/10; E21D9/00; G01C15/00; G06T7/00
Attorney, Agent or Firm:
Bunji Kamata (2 outside)