JpGU-AGU Joint Meeting 2017

Presentation information

[EE] Oral

H (Human Geosciences) » H-DS Disaster geosciences

[H-DS09] [EE] Landslides and related phenomena

Wed. May 24, 2017 10:45 AM - 12:15 PM 105 (International Conference Hall 1F)

convener:Masahiro Chigira(Disaster Prevention Research Institute, Kyoto University), Gonghui Wang(Disaster Prevention Research Institute, Kyoto University), Fumitoshi Imaizumi(Faculty of Agriculture, Shizuoka University), Chairperson:Issei Doi(Disaster Prevention Research Institute)

11:00 AM - 11:15 AM

[HDS09-06] A flume test for seepage and overtopping failures of model landslide dams

*Zheng-yi Feng1, Han-yi Huang1, Lu-jian Zhong1, Yi-han Wu1, Chun-kai Chiu1, Chih-han Hsueh1 (1.Department of Soil and Water Conservation, National Chung Hsing University, Taichung, Taiwan)

Keywords:landslide dam, seepage, overtopping, dam breach, flume test

A flume test was performed for seepage and overtopping failures of model landslide dams. We used non-polarized electrodes and accelerometers to monitor the self-potential variation and seismic signals during the failure processes. For the seepage failure tests, we found that self-potential variation corresponds well during the head ward progressive erosion failure of the model dam. In addition, repeating sliding of the model dam was observed and can be proved by the recurrent seismic signals. For the overtopping failure tests, the self-potential dropped sharply when the electrodes were exposed outside a model dam, which can be applied to indicating the eroded positions of a model dam.