Journal of Korean Society for Geospatial Information Science (대한공간정보학회지)

Korea Spatial Information Society (대한공간정보학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on the Debris Flow Hazard Mapping Method using SINMAP and FLO-2D

  • Kim, Tae Yun (Department of Civil Engineering, Sungkyunkwan University) ;
  • Yun, Hong Sic (Department of Civil Engineering, Sungkyunkwan University) ;
  • Kwon, Jung Hwan (Department of Aero Mechnical Engineering, Sungkyunkwan University)
  • Received : 2016.04.14
  • Accepted : 2016.06.15
  • Published : 2016.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study conducted an evaluation of the extent of debris flow damage using SINMAP, which is slope stability analysis software based on the infinite slope stability method, and FLO-2D, a hydraulic debris flow analysis program. Mt. Majeok located in Chuncheon city in the Gangwon province was selected as the study area to compare the study results with an actual 2011 case. The stability of the slope was evaluated using a DEM of $1{\times}1m$ resolution based on the LiDAR survey method, and the initiation points of the debris flow were estimated by analyzing the overlaps with the drainage network, based on watershed analysis. In addition, the study used measured data from the actual case in the simulation instead of existing empirical equations to obtain simulation results with high reliability. The simulation results for the impact of the debris flow showed a 2.2-29.6% difference from the measured data. The results suggest that the extent of damage can be effectively estimated if the parameter setting for the models and the debris flow initiation point estimation are based on measured data. It is expected that the evaluation method of this study can be used in the future as a useful hazard mapping technique among GIS-based risk mapping techniques.

Keywords

References

  1. Kang, H. S. and Kim, Y. T., 2013, Yield stress and viscosity characteristics of soils with liquidity index, Journal of KOSHAM, Vol. 13, No. 1, pp. 169-175.
  2. Kim, P. K., 2012 Numerical modeling for the detection and movement of debris flow using detailed soil maps and GIS, Doctoral thesis, Kyungpook National University.
  3. Kim, S. E., Paik, J. C. and Kim, K. S., 2013, Run-out modeling of debris flows in Mt. Umyeon using FLO-2D, Journal of the Korean Society of Civil Engineers, Vol. 33, No. 3, pp. 965-974. https://doi.org/10.12652/Ksce.2013.33.3.965
  4. Kim, W. Y. and Chae, B. G., 2009, Characteristic of rainfall, geology and failure geometry of the landslide areas on natural terrains, The Journal of Engineering Geology, Vol. 19, No. 3, pp. 331-344.
  5. Lee, I. J., Lee, D. H. and Suh, Y. C., 2010, GIS-based analysis of the debris flow occurrence possibility using an airborne LiDAR DEM around Pyeongchang-Gun, Kangwon-Do, Journal of the Korean Association of Geographic Information Studies, Vol. 13, No. 4, pp. 50-66.
  6. Lee, M. J. and Kim, Y.T., 2013, Movement and deposition characteristics of debris flow according to rheological factors, Journal of the Korean Geotechnical Society, Vol. 29, No. 5, pp. 19-27. https://doi.org/10.7843/kgs.2013.29.5.19
  7. O'Brien, J. S., Julien, P. Y. and Fullerton, W. T., 1993, Two-dimensional water flood and mudflow simulation, J. Hydraul. Eng., ASCE, Vol. 119, No. 2, pp. 244-261. https://doi.org/10.1061/(ASCE)0733-9429(1993)119:2(244)
  8. Rickenmann, D. and Koschni, A., 2010, Sediment loads due to fluvial transport and debris flows during the 2005 flood events in Switzerland, Proc. of Hydrological, Vol. 24, Issue 8, pp. 993-1007. https://doi.org/10.1002/hyp.7536
  9. Seo, H. G., 2012, Characteristics of landslide collapse according to shape factor of soil particles in rainfalls, Doctoral thesis, Sangji University.
  10. Song, Y. S., 2013, Stability analysis of the unsaturated infinite slope considering suction stress under steady infiltration condition, Journal of the Korean Geotechnical Society, Vol. 29, No. 9, pp. 5-15. https://doi.org/10.7843/kgs.2013.29.9.5
  11. Takahashi, T. K., 1983, Debris flow and debris flow deposition, in advances in the mechanics and the flow of granular material, Vol. 2, Trans Tech Publications, West Germany.
  12. Wang, C., Li, S. and Esaki, T, 2008, GIS-based two-dimensional numerical simulation of rainfall-induced debris flow, Natural Hazards and Earth System Science, Vol. 8, pp. 47-58. https://doi.org/10.5194/nhess-8-47-2008
  13. Wie, G. J., Cho, J. M., Lee, I. P. and Kang, I. G., 2007, Efficiency evaluation of contour generation from airborne LiDAR data, Journal of the Korean Society for Geospatial Information System, Vol. 15, No. 2, pp. 59-66.
  14. Wie, G. J., Lee, Y. K., Lee, D. H. and Suh, Y. C., 2010 Development of GIS-based debris flow simulation program, Journal of The Korean Society of Hazard Mitigation, Vol. 10, No. 1, pp. 49-55.
  15. Yang, I. T., Kim, Y. J. and Yu, Y. G., 2002, An analysis of terrain slope and drainage basin area, Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography, Vol. 20, No. 3, pp. 303-311.
  16. Zhang, C. B., 2014 A study on behavior characteristics and scale of debris flow in Korea, Master's thesis, Kangwon National University.