A study on the characteristics of the seismic signal induced by slope erosion and landslide

• Main Authors: Chia-cheng Yu, 俞佳成
• Other Authors: 馮正一
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/55403649825838751434

碩士 === 國立中興大學 === 水土保持學系所 === 102 === Landslides always induce seismic signals. To study the characteristic of the seismic signals induced by landslide, we built a large-scale model soil slope and an artificial landslide dam for testing. The overtopping water eroded the model slope when the artificial landslide dam breached. We installed accelerometers on the model soil slope to collect seismic signals during the tests. The seismic signals were analyzed using Hilbert-Huang Transform to obtain time-frequency spectrograms. From the spectrograms we can identify the timings when the model slope slid. In addition, the frequency contents of the collapsing events were compared and discussed. In addition, in this study we created the artificial landslide. The landslide generates produced seismic signals that were analyzed using Hilbert-Huang Transform to obtain time-frequency spectrograms. We will compare this result with the erosion test. The study used electric potential sensor to collect the electric potential variation of the slop .We used the HHT to analyze the trend of electric potential. The study discussed the relation of the landslide with the electric potential variation.