Évaluation des risques de glissements de terrain àl'échelle nationale àTaiwan

H. Y. Yin, C. Y. Lee, C. W. Lin, R. F. Chen, C. S. Chang, C. Y. Chi

研究成果: Conference contribution

摘要

After Hsiaolin Landslide that caused over 450 casualties during 2009 Typhoon Morakot, the government of Taiwan has constructed a nationwide 1 m resolution LiDAR derived DEM, which has been proven to be an effective tool for identifying deep-seated landslides. Since 2010, more than 9,000 deep-seated landslides that are over 10 ha respectively were identified in the DEM according to their morpho-tectonic features like the main escarpment, trench, double ridge and counterscarp. Additionally, a nationwide catastrophic landslide hazard assessment program was initiated in 2017. In the program, the activity of identified sites is evaluated based on InSAR analysis. The landslide susceptibility of these sites is also evaluated using a model constructed from the landslide inventory of Typhoon Morakot. According to the evaluation results of landslide activity, susceptibility and estimated vulnerability, 182 sites were further selected to carry out detailed investigations. Among them, 23 sites were installed with continuous GPS as the early warning system; some structural countermeasures have been made to 50 sites to reduce their level of risks; and a great effort has been put into the program to determine the rainfall triggering threshold and critical displacement rate for monitoring sites.

貢獻的翻譯標題A nationwide catastrophic landslide hazard assessment in Taiwan
原文French
主出版物標題17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
編輯Haraldur Sigursteinsson, Sigurour Erlingsson, Sigurour Erlingsson, Bjarni Bessason
發行者International Society for Soil Mechanics and Geotechnical Engineering
ISBN(電子)9789935943613
DOIs
出版狀態Published - 2019
事件17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Reykjavik, Iceland
持續時間: 2019 9月 12019 9月 6

出版系列

名字17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019 - Proceedings
2019-September

Conference

Conference17th European Conference on Soil Mechanics and Geotechnical Engineering, ECSMGE 2019
國家/地區Iceland
城市Reykjavik
期間19-09-0119-09-06

All Science Journal Classification (ASJC) codes

  • 土壤科學
  • 岩土工程與工程地質

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