Title:
METHOD FOR WASHING UNDERGROUND WATER CONVEYANCE DEVICE
Document Type and Number:
Japanese Patent JP3846227
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce time and cost.
SOLUTION: An underground water conveyance device 10 has a water conveyance passage 14, which is penetrated approximately horizontally in the thickness direction of an underground wall 12 and in which both ends are faced to the upstream side and downstream side of a groundwater stream respectively. The water conveyance passage 14 has a water collecting section 22 arranged on the ground side of the underground wall 12, a hollow cylindrical water- conveyance pipe 24 made of a steel pipe or the like and the first motor operated valve 26. The valve 26 is opened and closed by a controller 38. The controller 38 controls the opening and closing of the valve 26 so that the water collecting section 22 is supplied with washing water 32 and washing operation is conducted when a flow rate in the pipe 24 reaches a stationary water-quantity value or less, and automatically stops washing operation when the flow rate in the pipe 24 after washing reaches the stationary water-quantity value or less.
Inventors:
Hideki Fukami
Takayuki Ueno
Ken Sudo
Takayuki Ueno
Ken Sudo
Application Number:
JP2001161098A
Publication Date:
November 15, 2006
Filing Date:
May 29, 2001
Export Citation:
Assignee:
Obayashi Corporation
International Classes:
E02D5/20; B08B9/027; (IPC1-7): E02D5/20; B08B9/027
Domestic Patent References:
| JP2001020279A | ||||
| JP2000356479A |
Attorney, Agent or Firm:
Masatoshi Matsumoto