Coupling a slope stability model and a fracture flow model for predicting the timing of typhoon-indiced landslide

Shou Hao Chiang, Kang Tsung Chang, Chi Farn Chen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Triggering hydrology of landsliding can be different between climatic and geologic regions. In Taiwan, large portion of weathered rock fragments contained in mountainous hillslope soils led to a very high conductivity over near surface, and flows within bedrock fractures can be significantly recharged by typhoon rainfalls, and trigger landslides. A coupled model has therefore been developed to predict the timing of rainfall-induced landslides, by integrating a two-layered (soil and fractured bedrock) flow model and a slope stability model. The model was tested in an experiment site located at Hsiuluan Village, northern Taiwan and performed reasonably well in simulating the timing of landslide initiation for a 2004 landslide event. We suggest the model can be applied to other watersheds with similar environment, assuming that reliable rainfall estimates and soil physics data are available.

Original languageEnglish
Title of host publication34th Asian Conference on Remote Sensing 2013, ACRS 2013
PublisherAsian Association on Remote Sensing
Pages3760-3767
Number of pages8
ISBN (Print)9781629939100
StatePublished - 2013
Event34th Asian Conference on Remote Sensing 2013, ACRS 2013 - Bali, Indonesia
Duration: 20 Oct 201324 Oct 2013

Publication series

Name34th Asian Conference on Remote Sensing 2013, ACRS 2013
Volume4

Conference

Conference34th Asian Conference on Remote Sensing 2013, ACRS 2013
Country/TerritoryIndonesia
CityBali
Period20/10/1324/10/13

Keywords

  • Conductivity
  • Fracture flow
  • Landslide timing
  • Rainfall-induced landslide
  • Typhoon

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