土砂移動時の地盤振動の再現－模型実験からの考察－

抄録

Seismic sensor networks detect ground vibrations caused by the movement of large masses, predominantly at low frequencies of 1-3 Hz. We modeled sediment flow down a slope and measured ground vibrations in cases with and without a concrete wall at the end of the slope. The sediment weight, amount of water, and presence of iron balls were varied, and the waveform and amplitude spectrum were analyzed. As a basic, small-scale experiment, physical dissimilarities were not adjusted for. Nevertheless, the ground vibration amplitude and low-frequency waves mimicked real-world seismic vibrations.