WATER LEAKAGE AMOUNT MEASURING APPARATUS AND MEASURING METHOD OF IMPERVIOUS WALL STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a water leakage amount measuring apparatus and measuring method of an impervious wall structure capable of quantitatively measuring a minute amount of water leak even when there is no water level difference.SOLUTION: An apparatus 100 for measuring the amount of water leak from an impervious wall structure 10 for water shielding erected underwater includes: water sampling means 24 including a container 22 having an opening 20 water-tightly fixed to one side surface 10a of the impervious wall structure 10; and pressure adjusting means for putting, into a state of a predetermined atmospheric pressure, the inside of the container 22 of the water sampling means 24 water-tightly fixed to one side surface 10a of the impervious wall structure 10.SELECTED DRAWING: Figure 1