Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
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Drainage Control and Prediction of Slope Stability by GIS-based Hydrological Modeling at the Large Scale Open Pit Mine

GIS에 의한 대규모 노천광에서의 배수처리 및 사면안정 예측

  • 선우춘 (한국지질자원연구원 지반안전연구부) ;
  • 최요순 (서울대학교 지구환경시스템공학부) ;
  • 박형동 (서울대학교 지구환경시스템공학부) ;
  • 정용복 (한국지질자원연구원 지반안전연구부)
  • Published : 2007.10.31
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Abstract

This paper presents an application of drainage control and slope stability by GIS-based hydrological modeling to control the surface water from an operational point of view. This study was carried out on a region of Pasir open-pit coal mine, Indonesia. A detailed topographical survey was performed at the study area to generate a reliable DEM (Digital Elevation Model). Hydrology tools implemented in ArcGIS 9.1 were used to extract the characteristics of drainage system such as flow direction, flow accumulation and catchment area from DEM. The results of hydrological modeling and spatial analysis showed that current arrangement of pumping facility is not suitable and some vulnerable places to erosion exist on the bench face due to concentrated surface runoff. Finally, some practical measures were suggested to optimize the design of drainage system and to monitor the slope stability by the surface water management at the study region during heavy rainfall.

이 논문은 GIS 기반의 수리학적 모델링을 통하여 시공측면에서 효과적으로 지표수를 제어하여 배수제어와 사면의 안정성에서의 적용에 관한 것이다. 본 논문에서는 인도네시아 파시르 노천광을 대상으로 연구를 수행한 결과를 제시한다. 신뢰할 수 있는 DEM 자료의 획득을 위하여 상세한 지형측량이 이루어 졌으며, DEM 자료로 부터 빗물의 흐름방향, 누적 흐름양, 집수구역 등의 배수 시스템의 특성을 도출하기 위하여 ArcGIS 9.1 소프트웨어가 제공하는 Hydrology 분석 도구를 사용하였다. 수리학적 모델링과 지형적인 분석의 결과는 현재의 배수처리 설비가 적당하지 않으며 또한 집중되는 지표수의 흐름으로 벤치사면에서 많은 침식이 일어날 수 있음을 보여주고 있다. 마지막으로 배수설비설계의 최적화와 물의 흐름의 제어를 통한 사면의 안전성의 증가와 사면을 감시하기 위한 방법을 제시하였다.

Keywords

References

  1. Ambramso, L.W., Lee, T.M., Sharma, S. and G.M. Boyce, 2002, slope stability and stabilization methods, John Wiley & Sons, Inc., 712p
  2. Anderson, M.G. and K.S. Richards, 1987, Slope stability, Geotechnical engineering and geomorphology, John Wiley & Sons, Inc., 648p
  3. Brand, E.W., J. Premchitt and H.B. Phillipson, 1984, Relationship between rainfall and landslides in Hong Kong, Proc. 4th into Symp. Landslides, Toronto, 377-384
  4. Ducan, J.M. and S.G. Wright, 2005, Soil strength and slope stability, John Wiley & Sons, Inc
  5. Garbrecht, J., and L.W. Martz, 2000, Digital elevation model issues in water resource modeling, In: Maidment, D.R., Djokic, D. (eds), Hydrologic and hydraulic modeling support with geographic information systems, ESRI Press, Redland, USA, 1-27
  6. Hustrulid, W., Kuchta, M, 1995, Open pit mine planning and design: fundamentals, Balkema, Rotterdam, Netherlands, 252-367
  7. Jenson, S.K., and J.O. Domingue, 1988, Extracting topographic structure from digital elevation data for geographic information system analysis, Photogrammetric Engineering & Remote Sensing, Vol. 54, 1593-1600
  8. Maidment, D.R., O. Robayo, and V. Merwade, 2005, Hydrologic modeling, In: Maguire, DJ., M. Batty, M.F. Goodchild (eds), GIS, spatial analysis, and modeling, ESRI Press, Redland, USA, 319-332
  9. Mark, D.M., 1984, Automated detection of drainage networks from digital elevation models, Cartographica, Vol 21, 168-177 https://doi.org/10.3138/10LM-4435-6310-251R
  10. Martz, L.W. and E. deJong, 1988, CATCH: A FORTRAN program for measuring catchment area from digital elevation models, Computers & Geosciences, Vol. 14, 627-640 https://doi.org/10.1016/0098-3004(88)90018-0
  11. Martz, L.W. and J. Garbrecht, 1999, An outlet breaching algorithm for the treatment of closed depressions in a raster DEM, Computers & Geosciences, Vol. 25, 835-844 https://doi.org/10.1016/S0098-3004(99)00018-7
  12. Meek, F.A., 1990, Water management, In: Kennedy, B.A. (eds), Surface mining, Society for Mining, Metallurgy and Exploration, Littleton, USA, 819-840
  13. Tribe, A., 1992, Automated recognition of valley lines and drainage networks from grid digital elevation models: a review and a new method, Journal of Hydrology, Vol. 139, 263-293 https://doi.org/10.1016/0022-1694(92)90206-B
  14. Wang, L., and H. Liu, 2006, 'An efficient method for identifying and filling surface depressions in digital elevation models for hydrologic analysis and modeling', International Journal of Geographical Information Science, Vol. 20, 193-213 https://doi.org/10.1080/13658810500433453