Analysis of Slope Stability by Using Remote Sensing and GIS Around Chungju Area

원격탐사와 지구정보시스템을 이용한 충주지역의 사면안정분석

  • 신현준 (연세대학교 지구시스템과학과) ;
  • 이영훈 (연세대학교 지구시스템과학과) ;
  • 민경덕 (연세대학교 지구시스템과학과) ;
  • 원중선 (연세대학교 지구시스템과학과) ;
  • 김윤종 (서울시정개발연구원)
  • Received : 1996.07.31
  • Published : 1996.10.30

Abstract

Slope stability analysis was conducted using remote sensing and Geoscientific Information System (GIS) as a part of natural hazard assessment around Chungju area. Landsat TM band 5 and 7 which contain more information about geological structure and geography are chosen and processed to analyse regional geological structure. Through image processing technique such as PCA, HFF, edge detection and enhancement, regional lineament can be mapped and identified. The lineament density map is constructed based on summed length of lineaments per unit area and the study area can be divided into 7 structural domains. Various factors of slope stability analysis such as geology, slope aspect, degree of slope, landcover, water shed as well as characterized structural domain are constructed as a database of GIS. Rating and weighting of each factor for slope stability analysis is decided by considering environmental geological characteristics of study area. Spatial analysis of regional slope stability is examined through overlaying technique of the GIS. The result of areal distribution of slope stability shows that the most unstable area is all over Jaeogae-ni, Hyangsan-ni and Mt. Daedun.

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Acknowledgement

Supported by : 교육부