Publications

Detailed Information

복합재해 영향을 고려한 산불 후 산사태 잠재적 피해 위험도 분석 : Analysis of the potential landslide hazard after wildfire considering compound disaster effect

Cited 0 time in Web of Science Cited 0 time in Scopus
Authors

이종욱; 이동근; 송영일

Issue Date
2019-02
Publisher
한국환경복원기술학회
Citation
한국환경복원기술학회지, Vol.22 No.1, pp.33-45
Abstract
Compound disaster is the type that increases the impact affected by two or more hazard events, and attention to compound disaster and multi-hazards risk is growing due to potential damages which are difficult to predict. The objective of this study is to analyze the possible impacts of post-fire landslide scenario quantitatively by using TRIGRS (Transient Rainfall Infiltration and Grid-Based Regional Slope-Stability Analysis), a physics-based landslide model. In the case of wildfire, soil organic material and density are altered, and saturated hydraulic conductivity decrease because of soil exposed to high temperature. We have included the change of soil saturated hydraulic conductivity into the TRIGRS model through literature review. For a case study, we selected the area of 8km2 in Pyeongchang County. The landslide modeling process was calibrated before simulate the post-wildfire impact based on landslide inventory data to reduce uncertainty. As a result, the mean of the total factor of safety values in the case of landslide was 2.641 when rainfall duration is 1 hour with rainfall intensity of 100mm per day, while the mean value for the case of post-wildfire landslide was lower to 2.579, showing potential landslide occurrence areas appear more quickly in the compound disaster scenario. This study can be used to prevent potential losses caused by the compound disaster such as post-wildfire debris flow or landslides.
ISSN
1229-3032
Language
KOR
URI
https://hdl.handle.net/10371/163760
Files in This Item:
There are no files associated with this item.
Appears in Collections:

Altmetrics

Item View & Download Count

  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Share