WATER LEAKAGE INSPECTION, WATER LEAKAGE TREATMENT METHOD FOR CONCRETE DAM, AND DEVICE USED FOR WATER LEAKAGE INSPECTION, WATER LEAKAGE TREATMENT METHOD FOR CONCRETE DAM

摘要

PROBLEM TO BE SOLVED: To achieve a low cost without need for large scale device, identifying easily a water leakage position, by pinpointing the water leakage position using an injection box 5 which can move freely under the water surface of dam water storage lake 2.;SOLUTION: The device includes the injection box 5 which has an aperture part in the under surface and is formed an elastic skirt 6 in the bottom, a tank 18, the injection device equipped with a pump 17 which can transfer a liquid contained in the tank 18 into an injection piping 19 connected between the tank 18 and the outer end, and a winding device which moves the injection box 5 to vertical position. The liquid which is transferred from the injection piping 19 can be injected into inside of the injection box 5. One end of the injection piping 19 is connected to inside of upper surface of the injection box 5. A pulley 22 is equipped to the dam bank 1. A rope 21 wound on a hoisting drum 20 is passed through the pulley 22 and is hung down. The injection box 5 is connected to the end of the rope 21. The injection box 5 is moved vertically by the rope 21 wound on the hoisting drum 20.;COPYRIGHT: (C)2010,JPO&INPIT