Title:
WIRE SAW EXCAVATOR, CUT-OFF WALL OR LANDSLIDE PROTECTION CONSTRUCTION CONSTRUCTED THEREBY AND CONSTRUCTION METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/1992/021826
Kind Code:
A1
Abstract:
In the ground (T), preceding holes (3) are dug and also a portion between adjoining preceding holes (3) is excavated by use of a wire saw device (9) to thereby form a sheet insertion groove (4), into which a cut-off sheet (5) is inserted, while, engageable portions (7) provided at opposite end portions in the widthwise direction of the cut-off sheet (5) are positioned within the preceding hole (3), whereby the cut-off sheet (5) is pulled into the sheet insertion groove (4). Bentonite mortar is filled in the preceding hole (3) and the sheet insertion groove (4), which are brought into a water-tight state, to thereby form a cut-off sheet wall (1). The ground (T) is excavated by use of the wire saw device (9) and a sheet setting device (10) to thereby form the sheet insertion groove (4), while the cut-off sheet (5) is pulled into the sheet insertion groove (4), so that the working efficiency for constructing the cut-off sheet wall (1) is improved, and moreover, the insertion of the cut-off sheet (5) into the sheet insertion groove (4) can be easily and accurately performed, to thereby improve the construction accuracy.
Inventors:
WATANABE TOSHIO (JP)
OHNISHI YUUJI (JP)
NISHIMURA SHINICHI (JP)
KAJIOKA YASUO (JP)
MUKAWA YOSHIHIRO (JP)
SATOH HITOSHI (JP)
OHNISHI YUUJI (JP)
NISHIMURA SHINICHI (JP)
KAJIOKA YASUO (JP)
MUKAWA YOSHIHIRO (JP)
SATOH HITOSHI (JP)
Application Number:
PCT/JP1992/000062
Publication Date:
December 10, 1992
Filing Date:
January 24, 1992
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD (JP)
International Classes:
E02D5/20; E02D17/13; E02D19/18; E02F3/10; E02F5/02; (IPC1-7): E02D5/20; E02D17/13
Foreign References:
JPH02171412A | 1990-07-03 | |||
JPH02171415A | 1990-07-03 | |||
JPH02171423A | 1990-07-03 | |||
JPH02178418A | 1990-07-11 |
Other References:
See also references of EP 0541813A4
Attorney, Agent or Firm:
Shiga, Masatake (Shibaura 1-chome Minato-ku, Tokyo 105, JP)
Download PDF:
Previous Patent: CONSTRUCTION METHOD OF IMPROVING OR STRENGTHENING GROUND
Next Patent: DEVICE FOR PLACEMENT OVER AN OPENING IN A HOLLOW WALL
Next Patent: DEVICE FOR PLACEMENT OVER AN OPENING IN A HOLLOW WALL