空気注入による液状化対策工に対するモニタリング : 三次元比抵抗トモグラフィによる空気注入範囲の可視化(<特集>地盤構造物の可視化技術の現状と課題)

概要

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In recent years, desaturation of loose sand deposits as a countermeasure against liquefaction attracts great attention of engineers. Methods of desaturation such as the air injection technique were developed and the relationship between degree of saturation and liquefaction resistance has already been established. In this study, an attempt was made to identify the area at a site by using the threedimensional resistivity tomography, where in-situ air injection test were conducted. It is confirmed that the area where resistivity of soil changed by air injection coincides with desaturated area. Distribution of degree of saturation in the area can be also estimated using the Archie's formulas and the resistivity change.
社団法人地盤工学会の論文
2009-05-01