REPAIR OF WATER LEAKAGE FROM CONCRETE BASE PLATE

PROBLEM TO BE SOLVED: To surely pack a repair material to the periphery of a water leaking point while an internally stored material is held intact. SOLUTION: A concrete structure 11, which consists of side walls 8 and a concrete base plate 1 and in which the storage material 2 is stored, has a drain material 9 disposed in the lower part of the concrete base plate 1, a nonwoven fabric 7 laid in the lower part of this drain material 9 and a water lifting/injecting pipe 10 communicating with the drain material 9. A repair material 5 is injected and packed from the water lifting/injecting pipe 10 into the drain material 9 on which the water leaking point 3 of the concrete base plate 1 is formed.