Investigation on Leakage Characteristics of Retaining Wall by Impedance Measurement

Abstract

During excavation for an underground construction such as subway and subsurface structure of building ground water would infiltrate and may be flooded if a part of the retaining wall is not perfect. The objective of this study is to measure impedance by installing multiple electrode in the retaining wall and to check the leakage of water caused by imperfections in the retaining wall. The results of laboratory tests indicate that the measurement of impedance is useful to estimate the amount of seepage water and seepage area.