Title:
IMPERVIOUS WALL
Document Type and Number:
Japanese Patent JP2006077453
Kind Code:
A
Abstract:
To provide an impervious wall capable of cutting off a bleeding channel generated around a tunnel, by restraining looseness of base rock caused by construction.
This impervious wall is constructed in a shaft 4, and has a continuous groove 10 excavated outward so as to separate from the shaft 4 for turning downward from a water cut-off plug 6 in the shaft 4. Highly concentrated bentonite slurry 11 is filled inside the continuous groove 10, and the substantially umbrella-shaped impervious wall 7 is formed. The impervious wall 7 is constituted by being joined in close contact with the outer periphery of the water cut-off plug 6 formed of a bentonite block arranged in the shaft 4.
Inventors:
NOBUTO JUN
FUJINUMA SHINYA
FUJINUMA SHINYA
Application Number:
JP2004262360A
Publication Date:
March 23, 2006
Filing Date:
September 09, 2004
Export Citation:
Assignee:
SHIMIZU CONSTRUCTION CO LTD
International Classes:
E02D3/12; B09B1/00; E02D5/18; G21F9/36
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
Tadashi Takahashi
Takashi Watanabe
Masakazu Aoyama
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