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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50535

Title: SLOPE STABILITY ANALYSIS OF TRANSIENT SEEPAGE UNDER EXTREME CLIMATES: CASE STUDY OF TYPHOON NARI IN 2001
Authors: Chia-Feng Hsu
Lien-Kwei Chien
Contributors: 國立臺灣海洋大學:河海工程學系
Keywords: extreme climate
finite-element analysis
transient seepage
slope stability analysis
permeability
factor of safety (FS)
Date: 2015
Issue Date: 2018-10-15T02:27:02Z
Publisher: Journal of Marine Science and Technology
Abstract: Abstract: The effects of climate change, the inherent fragility of geological
structures in Taiwan, and questionable developmental
practices have led to the occurrence of numerous slope disasters,
most of which were triggered by the extreme rainfall associated
with typhoons. Therefore, this study collected rainfall
data associated with typhoons striking northern Taiwan over
the last 17 years, as a follow up to estimating database of extreme
rainfall events. Most previous investigations regarding
the impact of storms on slope stability focused on solutions
with conditions, such as static groundwater levels or steady
pore pressure. Previous studies have used software STABL to
analyze slope stability but failed to consider the influence of
groundwater seepage or changes in pore pressure during rainfall
events. Thus, we proposed an improved method of defining a
partitioning rainfall to select the most representative rainfall
events, whereupon a comprehensive overview of the associated
rainfall patterns was constructed using finite-element analytical
software SEEP/W. We simulated the transient seepage of unsaturated
soils and input the results into SLOPE/W to conduct
slope stability analysis. A comparison of STABL results demonstrates
that the outcomes of this study are more applicable to
real-world cases than existing methods for the evaluation of
slope stability.
Relation: 24(3) pp.399-412
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/50535
Appears in Collections:[河海工程學系] 期刊論文

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