The influence of thrust faulting on deep-seated slope gravitational deformation in southern Taiwan

R. F. Chen, C. W. Lin, H. H. Lin, Y. C. Hsieh, C. L. Wang, K. P. Cheng, T. C. Chen

研究成果: Conference contribution

摘要

Meilong River catchment has been chosen to illustrate the influence of thrust faulting on deep-seated slope gravitational deformation in southern Taiwan. We identified morpho-tectonic features using the 1 m resolution LiDAR derived DEM, aerial photographs and field observations. In the 5.2 km2 catchment, over 10 deep-seated landslides sized over 10 ha have been recognized. Furthermore, a 700 m to 800 m thick faulted material composed of gouge, breccia and intensively fractured metamorphosed metamorphised argillite with thin bedded sandstone was found. Drilling cores from five boreholes with a depth of 120 m to 140 m also support the results of field observations. Fault slip data measured in the field exhibit thrust-type movement that can be used to differentiate faulted material from tectonic origin rather than from gravitation sliding. Besides, as the sliding behavior of identified deep-seated landslides is much more similar to homogeneous cohesive soil than rocks, most of deep-seated landslides observed in the catchments exhibits rotational sliding behavior, which is different from the plane or wedge sliding behavior in most rock slopes in mountainous region of Taiwan.

原文English
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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