Title:
METHOD AND DEVICE FOR TRACTION
Document Type and Number:
Japanese Patent JP2000070891
Kind Code:
A
Abstract:
To eliminate clogging of a small bore pipe provided in a dam body without lowering elevation of a water surface on an upstream side of a dam.
Water 3 in a supply water tank 2 is transferred under pressure by a pump 4 and pressurized water is intermittently fed to a small bore pipe 7 in an upstream direction through a valve 5 and a check valve 6. By this method, sand and rubbish with which the small bore pipe 7 is clogged are spewed to an upstream side for carrying out traction without lowering elevation of a water surface of a dam.
Inventors:
SHIINA MASAKI
Application Number:
JP24483598A
Publication Date:
March 07, 2000
Filing Date:
August 31, 1998
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
E02B7/20; B08B9/027; E02B7/00; (IPC1-7): B08B9/027; E02B7/00; E02B7/20
Attorney, Agent or Firm:
Toshiro Mitsuishi (2 outside)