A kinematic model of the Hsiaolin landslide calibrated to the morphology of the landslide deposit

Chia Ming Lo, Ming Lang Lin*, Chao Lung Tang, Jyr Ching Hu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

95 Scopus citations

Abstract

This paper presents results of a case study on the Hsiaolin catastrophic landslide, including its kinematic process and the geometry of deposition. Based on geomorphologic analysis, the landslide initiated in thick, multi-aged colluvium soils at the headwaters of a small stream upslope of Hsiaolin village. A 3D discrete element program, PFC3D was used to model the kinematic process that led to the landslide and destruction of Hsiaolin village. The landslide advanced from debris slide to debris avalanche during the kinematic process. Assuming a friction coefficient of each particle of 0.1, the predicted maximum velocity was about 70. m/s, a velocity which permits the debris to cross Qishanxi stream and deposit on the opposite bank. Based on simulation results, Hsiaolin village was inundated in 60 to 65. s after failure initiation and at 112. s after the event, the debris avalanche came to rest, forming a landslide dam.

Original languageEnglish
Pages (from-to)22-39
Number of pages18
JournalEngineering Geology
Volume123
Issue number1-2
DOIs
StatePublished - 11 Nov 2011

Keywords

  • Catastrophic landslide
  • Geomorphologic analysis
  • Kinematic process
  • Landslide dam

Fingerprint Dive into the research topics of 'A kinematic model of the Hsiaolin landslide calibrated to the morphology of the landslide deposit'. Together they form a unique fingerprint.

Cite this