Browse > Article
http://dx.doi.org/10.9720/kseg.2013.1.57

Development of a GIS-based Computer Program to Design Countermeasures against Debris Flows  

Song, Young-Suk (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Chae, Byung-Gon (Geologic Environment Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of Engineering Geology / v.23, no.1, 2013 , pp. 57-65 More about this Journal
Abstract
We developed a computer program (CDFlow v. 1.0) to design countermeasures against debris flows in natural terrain. The program can predict the probability of landslides occurring in natural terrain and can estimate the zone of damage caused by a debris flow. It can also be used to design the location and size of countermeasures against the debris flow. The program is run using the ArcGIS Engine, which is one of the most well-known Geographic Information System (GIS) tools for developers. The quasi-dynamic wetness index and the infinite slope stability equation were applied to predict landslide probability as a type of slope safety factor. The calculated safety factor was compared with the required safety factor, and areas of high probable potential for landslides were then selected and represented on the digital map. The volume of debris flow was estimated using these areas of high probable potential for landslides and soil depth. The accumulated volume of debris flow can be calculated along the flow channel. To assess the accuracy of the program, it was applied to a real landslide site at Deoksan-ri, Inje-gun, Kangwon-Province, where four debris barriers have been installed in the watershed of the site. The results of soil tests and a field survey indicate that the program has great potential for estimating probable landslide areas and the trajectory of debris flows. Calculation of the capacity volume of existing debris barriers revealed that they had insufficient capacity to store the calculated amount of debris flow. Therefore, this program enables a rational estimation of the optimal location and size of debris barriers.
Keywords
debris flow; debris barrier; landslide probability; trajectory of debris; computer program;
Citations & Related Records
Times Cited By KSCI : 7  (Citation Analysis)
연도 인용수 순위
1 Chae, B. G., Kim, M. I., and Song, Y. S., 2011, Method for infinite slope stability analysis considering saturation depth ratio of rainfall, Patent Number 10-1078297, The Korean Intellectual Property Office. (In Korean with English abstract)
2 Chae, B. G., Lee, S. H., Song, Y. S., Cho, Y. C., and Seo, Y. S., 2007, Characterization on the relationships among rainfall intensity, slope angle and pore water pressure by a flume test: in case of gneissic weathered soil, The Journal of Engineering Geology, 17(1), 57-64. (In Korean with English abstract)   과학기술학회마을
3 Kim, K. S., 2006, Soil characteristics according to the geological condition of soil slopes in landslide area, The Journal of Engineering Geology, 16(4), 359-371. (In Korean with English abstract)   과학기술학회마을
4 Kim, K. S., Song, Y. S., Cho, Y. C., Kim, W. Y., and Jeong, G. C., 2006, Characteristics of rainfall and landslides according to the geological condition, The Journal of Engineering Geology, 16(2) 189-199. (In Korean with English abstract)   과학기술학회마을
5 O'Callaghan, J. F. and Mark, D. M., 1984, The extraction of drainage networks from digital elevation data, Computer Vision, Graphics and Image Processing, 28, 328-344.
6 Park, D. G., Oh, J. L., and Park, J. H., 2006, Geohazards and disaster prevention policy in Korea, Proc. 2006 Engieering Geology Symposium, Daejeon, 41-49. (In Korean with English abstract)
7 Song, Y. S., Chae, B. G., and Seo, Y. S., 2007, Proposal of method to estimate the runout distance of landslides induced by rainfall, Journal of the Korean Society of Civil Engineers, 27(5C), 343-352. (In Korean with English abstract)   과학기술학회마을
8 Song, Y. S., Cho, Y. C., and Chae, B. G., 2011, A study on the commercialization of the design program for countermeasure against landslides, JP2011-004-2011(a), Korea Institute of Geosciences and Mineral Resources. 69p. (In Korean with English abstract)
9 Song, Y. S. and Hong, W. P., 2007, A case study on the analysis of cause and characteristics of a landslide at the sedimentary rock area, The Journal of Engineering Geology, 17(1), 125-133. (In Korean with English abstract)   과학기술학회마을
10 Song, Y. S. and Hong, W. P., 2011, Analysis of slope stability with consideration of the wetting front and groundwater level during rainfall, The Journal of Engineering Geology, 21(1), 25-34. (In Korean with English abstract)   과학기술학회마을   DOI   ScienceOn
11 Song, Y. S., Hong, W. P., and Woo, K. S., 2012, Behavior and analysis of stabilizing piles installed in a cut slope during heavy rainfall, Engineering Geology, 129, 56-67.
12 Song, Y. S., Jang, Y. H., and Kim, J. S., 2005, Landslide characteristics induced by heavy rainfall in Samcheok area, The Journal of Engineering Geology, 15(4), 435-445. (In Korean with English abstract)   과학기술학회마을