WATER PASSAGE REPAIR PLATE, REPAIR METHOD FOR EXISTING WATER PASSAGE, AND REPAIRED WATER PASSAGE

摘要

PROBLEM TO BE SOLVED: To enable easily repairing an existing water passage without taking labor and time even when the water passage is not completely dried.;SOLUTION: A water passage repair plate 11 comprises an FRPM panel 11a, a cushioning material 11b stuck to the panel back surface excepting the peripheral edge portion, and water-expansible portion so as to surround the cushioning material 11b. The cushioning material 11b and water-expansible rubber 11c sides of the repair plate 11 are closely contacted with the inner wall surface of the existing water passage 12, and the repair plates 11 are installed side by side in the lengthwise direction of a water passage so as to leave a space between them, and fixed by anchor bolts 13 to form a repaired water passage 10. The cushioning material 11b fills a space between the panel 11a and the existing water passage 12, and the water-expansible rubber absorbs water flowing into a space between the repair plates, thereby almost completely preventing water leakage. Unlike the case using a backfil material and a caulking material in a water passage repair plate, a curing time is not required at repair work, and labor for drying the inner wall surface of the existing water passage is not required. Therefore, shortening of a construction period and simplification of work can be achieved.;COPYRIGHT: (C)2010,JPO&INPIT