先端地盤弾性力を受ける棒の強制縦振動応答を用いた土砂崩壊予兆検知法のフィールド評価

抄録

In this paper, the landslide sign detection sensing method is proposed. First, the detection principle and prototype system are described. Furthermore, the field test was conducted using prototype system. In setup moment the prototype system, the soil samples are obtained. The soil samples are conducted the compressive test. On the other hand, the vibration test is performed using the prototype system under the white noise excitation condition. As the result, the coupled eigen frequencies between ground soil and elastic bar are obtained. Test location is selected based on hazard map of Tokyo metropolis. The test locations contain the danger zone and the no danger zone, respectively. As the result, the eigen frequency of danger zone is lower than the no danger zone it. Moreover, the soil cohesion of danger zone is lower than it of no danger zone, too.