| 講演要旨(和文) | | 軟弱地盤の地盤改良工事の際に改良杭が施工される。改良杭施工と同時に地盤の比抵抗分布を測定する際を想定して、3次元の比抵抗シミュレーションを行った。その結果、改良杭施工のためにセメントを注入しても測定される見掛比抵抗は低比抵抗側へ平行移動することが確認された。また、見掛比抵抗曲線の相対的な変化は変わらず、精度良く地盤の比抵抗変化を捉えることが確認された。 |
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| | 講演要旨(英文) | | A ground improvement technique is effective for soft ground before constructing buildings and structures. But the judgement of reaching a rigid bottom layer is one of difficult problem in case of a ground improvement. In order to estimate geological nature, we try to measure resistivity distribution of a desired site. 3D numerical simulation of square array resistivity method was performed to evaluate effects of construction of soil-cement columns on resistivity measurement by square array resistivity method. As a result of some simulations, simulated apparent resistivity considering the effects of construction of soil-cement columns shifts to low resistivity. |
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