To close the surroundings of a structure to be worked which is built under water by simple steps while securing high sealability without being affected by the altitude head and the depth of water.
This water cut-off wall body for closing is disposed, in a surrounding state, around a structure to be worked 2 which is vertically installed on a pedestal 4 under water and projects above the water level. The water cut-off wall body includes a water cut-off wall frame 11 installed on the upper surface 4a of the pedestal 4 in a frame shape, a hard-to-deformable support member 12 which is installed on the lower surface of the water cut-off frame 11 so as to project therefrom and brought into contact with the upper surface of the pedestal 4 so as to support the overall weight of the frame, a seal member 13 which is provided, in parallel to the support member 12, to the lower surface of the water cut-off frame 11 so as to project therefrom, a water cut-off wall body 14 which comprises a plurality of water cut-off segments 18 which are detachably connected watertight to each other and vertically installed watertight on the upper surface 11a of the water cut-off frame 11, and a buoyancy imparting means 15 for floating and sinking the water cut-off wall body 14.
KOZUKI NAOAKI
ASO KATSU
HASEGAWA HARUO
UTSUMI NAOAKI
| JPH09189043A | 1997-07-22 | |||
| JP2006249685A | 2006-09-21 | |||
| JP2005048493A | 2005-02-24 |
Akio Ishii
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