Water stoppage performance evaluation device and water stoppage performance evaluation method

摘要

PROBLEM TO BE SOLVED: To propose a water stopping performance evaluation device and a water stopping performance evaluation method capable of confirming the performance of a ground improvement chemical solution according to construction conditions (geology, groundwater level, groundwater flow velocity, etc.). SOLUTION: A tubular container 2 filled with granules 20, a water supply means 3 for supplying a constant amount of water from one end of the container 2, and an amount of liquid discharged from the other end of the container 2 are measured. A drainage measuring means 4 and an injection means 5 for supplying an injection material to an intermediate portion of the container 2 are provided. [Selection diagram] Fig. 1