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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 (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Ohnishi, Yuuji (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Nishimura, Shinichi (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Kajioka, Yasuo (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Mukawa, Yoshihiro (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Satoh, Hitoshi (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Application Number:
PCT/JP1992/000062
Publication Date:
December 10, 1992
Filing Date:
January 24, 1992
Export Citation:
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Assignee:
SHIMIZU CONSTRUCTION CO., LTD. (2-3 Shibaura 1-chome, Minato-ku, Tokyo 105, JP)
Watanabe, Toshio (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Ohnishi, Yuuji (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Nishimura, Shinichi (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Kajioka, Yasuo (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Mukawa, Yoshihiro (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
Satoh, Hitoshi (Shimizu Construction Co. Ltd, 2-3, Shibaura 1-chom, Minato-ku Tokyo 105, JP)
International Classes:
E02D5/20; E02D17/13; E02D19/18; E02F3/10; E02F5/02; (IPC1-7): E02D5/20; E02D17/13
Foreign References:
JPH02171412A1990-07-03
JPH02171415A1990-07-03
JPH02171423A1990-07-03
JPH02178418A1990-07-11
Other References:
See also references of EP 0541813A4
Attorney, Agent or Firm:
Shiga, Masatake (2-3, Shibaura 1-chome Minato-ku, Tokyo 105, JP)
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