The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes: A theoretical explanation with experimental tests

Y. J. Tsai, K. C. Wang, Y. S. Chen, Chjeng-Lun Shieh

研究成果: Conference contribution

摘要

In Taiwan, large and often catastrophic typhoons and earthquakes are both factors to trigger serious landslides in mountains. The presences of large amounts of sediments due to the landslides increase the occurrence of debris flow. Base on post-event data, the threshold of debris flow occurrence decreases soon after an earthquake indicating a fast recovery. A relationship of debris flow occurrence from EGASHIRA (1997) is applied, which shows fine sediment plays an important role with debris-flow development and occurrence. In this paper, a series mobile-bed experiments were done to access the influence of the concentration change from upstream discharge with fine/coarse particle. Two variables were recorded in the experiment, which were depth-ratio (sediment layer depth/ total depth), and the sediment discharge. With comparison with theoretical relationship, the result shows the occurrence condition varied with the ratio of fine sediment.

原文English
主出版物標題5th International Conference on Debris-Flow Hazard Mitigation
主出版物子標題Mechanics, Prediction, and Assessment
頁面143-148
頁數6
DOIs
出版狀態Published - 2011 十二月 1
事件5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment - Padua, Italy
持續時間: 2011 六月 142011 六月 17

出版系列

名字International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings

Other

Other5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
國家Italy
城市Padua
期間11-06-1411-06-17

指紋

Debris
debris flow
Earthquakes
Sediments
earthquake
sediment
Landslides
landslide
experiment
Experiments
test
Recovery
mountain

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Earth-Surface Processes

引用此文

Tsai, Y. J., Wang, K. C., Chen, Y. S., & Shieh, C-L. (2011). The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes: A theoretical explanation with experimental tests. 於 5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment (頁 143-148). (International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings). https://doi.org/10.4408/IJEGE.2011-03.B-017
Tsai, Y. J. ; Wang, K. C. ; Chen, Y. S. ; Shieh, Chjeng-Lun. / The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes : A theoretical explanation with experimental tests. 5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment. 2011. 頁 143-148 (International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings).
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Tsai, YJ, Wang, KC, Chen, YS & Shieh, C-L 2011, The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes: A theoretical explanation with experimental tests. 於 5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment. International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings, 頁 143-148, 5th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Padua, Italy, 11-06-14. https://doi.org/10.4408/IJEGE.2011-03.B-017

The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes : A theoretical explanation with experimental tests. / Tsai, Y. J.; Wang, K. C.; Chen, Y. S.; Shieh, Chjeng-Lun.

5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment. 2011. p. 143-148 (International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings).

研究成果: Conference contribution

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Tsai YJ, Wang KC, Chen YS, Shieh C-L. The variability in time of the occurrence conditions of debris flow after catastrophic typhoons and earthquakes: A theoretical explanation with experimental tests. 於 5th International Conference on Debris-Flow Hazard Mitigation: Mechanics, Prediction, and Assessment. 2011. p. 143-148. (International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings). https://doi.org/10.4408/IJEGE.2011-03.B-017