한국농공학회논문집 (Journal of The Korean Society of Agricultural Engineers)

  • 제54권5호
  • /
  • Pages.129-139
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  • 2012
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  • 1738-3692(pISSN)
  • /
  • 2093-7709(eISSN)
한국농공학회 (The Korean Society of Agricultural Engineers)
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갇힌 공기를 고려한 불포화토 침투 해석에 관한 연구

Analysis of Rainfall Induced Infiltration Considering Occluded Air in Unsaturated Soils

  • 이준용 (한국건설기술연구원 Geo-인프라연구실) ;
  • 유찬 (경상대학교 지역환경기반공학과 (농업생명과학연구원)) ;
  • 김욱기 (한국건설기술연구원 Geo-인프라연구실) ;
  • 김동욱 (한국건설기술연구원 Geo-인프라연구실)
  • 투고 : 2012.07.26
  • 심사 : 2012.09.10
  • 발행 : 2012.09.30
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초록

Accurate modeling rainfall induced landslide and slope stability requires a detailed knowledge of the distribution of material strength characteristics and suction distribution. However, material properties obtained from the drying cycle are still used for infiltration analysis in many cases, even though material properties of wetting cycle are quite different from those of drying cycle due to hydraulic hysteresis and air occlusion. Therefore, the selection of proper material properties such as soil-water retention curve (SWRC) and the hydraulic conductivity function (HCF) reflecting characteristics of wetting cycle and air occlusion is an essential prerequisite in order to simulate the infiltration phenomena and to predict the suction and water content distribution in unsaturated soils. It is concluded that the simulation of infiltration with material properties from the drying cycle did not reasonably match with experimental outputs. Further discussion is made on how to describe the material properties considering air occlusion during wetting cycle over the entire suction range in order to simulate infiltration phenomena.

키워드

참고문헌

  1. Bear, J., 1979. Hydraulic of Groundwater. McGraw-Hill, New York, U.S.
  2. Bicalho, K. V., 1999. Modeling water flow in an unsaturated compacted soil. Ph.D. diss., Boulder, Colorado: University of Colorado at Boulder
  3. Bichalho, K. V., D. Znidarcic, and H.-Y. Ko, 2000. Air entrapment effects on hydraulic properties. Advances in Unsaturated Geotechnics, Proceedings of Sessions of Geo-Denver 2000, GSP N0. 99, Shackelford, C. D., Houston, S. L. & Chang,, N. -Y., Editors, ASCE, Reston, VA, 517-528
  4. Brooks, R. H., and A. T. Corey, 1964. Hydraulic properties of porous media. Colorado State University, Hydrology Paper, 3, March.
  5. Chen, H., C. F. Lee, and K. T. Law, 2004. Causative mechanisms and rainfall-induced fill slope failure. Journal of Geotechnical and Geoenvironmental Enginneering 130(6): 593-602. https://doi.org/10.1061/(ASCE)1090-0241(2004)130:6(593)
  6. Collins, B. D., and D. Znidarcic, 2004. Stability analyses of rainfall-induced landslides. Journal of Geotechnical and Geoevironmental Engineering 130(4): 362-372. https://doi.org/10.1061/(ASCE)1090-0241(2004)130:4(362)
  7. Gawin, D., L. Simoni, and B. A. Schrefler, 1997. Numerical model for hydro-mechanical behavior in deformable porous media: a Benchmark Problem. Proceeding of the 9st International Conference on Computer Methods and Advances in Geomechanics, Balkema, Rotterdam, 1143-1148.
  8. GE0-SLOPE International Ltd., 2009. Geostudio 2007 Add-ins Programming Guide and Reference. Calgary, Alta., Canada.
  9. GE0-SLOPE International Ltd., 2010. Seepage Modeling with SEEP/W 2007 Version 4th Edition, Calgary, Alta., Canada.
  10. Hwang, C., 2002. Determination of material functions for unsaturated flow. Ph.D. diss., Boulder, Colorado: University of Colorado at Boulder.
  11. Jeong, S. S., J. Y. Choi, and J. H. Lee, 2009. Stability analysis of unsaturated weathered soil slope considering rainfall duration. Journal of Kocrean Society of Civil Engineering 29(1C): 1-9 (in Korean).
  12. Jotisankasa, A. and H. Vathananukkij, 2008. Investigation of soil moisture characteristics of landslide-prone slopes in Thailand. Proc. of the Internatinal Coference on Management of Landslide Hazard in the Asia-Pacific Region, Sendai, Japan, November, 11-15.
  13. Khosravi, A., 2011. Small strain shear modulus of unsaturated, compacted soils during hydraulic hysteresis. Ph.D. diss., Boulder, Colorado: University of Colorado at Boulder.
  14. Kim, Y. K., J. C. Choi, S. R. Lee, and J. H. Seong, 2009. Reliable assessment of rainfall-induced slope instability. Journal of the Korean Geotechnical Society 25(5): 53-64 (in Korean).
  15. Kim, J. H., W. K. Hwang, Y. S. Song, and T. H. Kim, 2012. Effect on matric suction in soils due to hysteretic soil water characteristic curves. Journal of the Korean Geotechnical Society 28(4): 91-100 (in Korean). https://doi.org/10.7843/kgs.2012.28.4.91
  16. Laloui, L., G. Klubertanz, and L. Vulliet, 2003. Solid-liquid-air coupling in multiphase porous media. International Journal for Numerical and Analytical Methods in Geomechanics 27(3): 183-206. https://doi.org/10.1002/nag.269
  17. Lee, J., 2011. Limits to continuity of water flow in unsaturated, compacted Soils. Ph.D. diss., Boulder, Colorado: University of Colorado at Boulder.
  18. Lee, K. I., J. Y. Lee, and W. J. Back, 2009. Soil-water characteristic curve of weathered granite soils in Pocheon area using flow pump technique. Journal of the Korean Society of Agricultural Engineers 51(1): 11-20 (in Korean) https://doi.org/10.5389/KSAE.2009.51.1.011
  19. Lee, J., and C. Yu., 2012. A Study on change of soil-water retention curve With different net confining pressures and porosities using a suction-saturation control technique. Journal of the Korean Society of Agricultural Engineers 54(4) : 93-103 (in Korean). https://doi.org/10.5389/KSAE.2012.54.4.093
  20. McCartney, J. S and J. Parks, 2009. Uncertainty in predicted hydraulic xonductivity functions of unsaturated soils. 17th ICSMGE Conference, Alexandria, Egypt.
  21. McCartney, J. S. and D. Znidarcic, 2010. Test system for hydraulic properties of unsaturated nonwoven geotextiles. Geosynthetics International 17(5): p.10.
  22. Meiri, D., and G. Karadi, 1982. Simulation of air storage aquifer by finite element model. International Journal for Numerical and Analytical Methods in Geomechanics 27: 339-351.
  23. Rahardjo, H., T. H. Ong, R. B. Rezaur, and E. C. Leong, 2007. Factors controlling instability of homogeneous soil slopes under rainfall. Journal of Geotechnical and Geoenvrionmental Engineering 133(12): 1532-1543. https://doi.org/10.1061/(ASCE)1090-0241(2007)133:12(1532)
  24. Richards, L., 1952. "Water conducting and retaining properties of soils in relation to irrigation. Proc. Int. Symp. On Desert Res.: 523-426.
  25. Schuurman, E., 1966. The compressibility of an air/water mixture and a theoretical relation between the air and water pressures, Geotechnique 16(4): 269-281. https://doi.org/10.1680/geot.1966.16.4.269
  26. Schrefler. B., and A. Scotta, 2001. A fully coupled dynamic model for two-phase fluid flow in deformable porous media. Computer Methods in Applied Mechanics and Engineering 190: 3223-3246. https://doi.org/10.1016/S0045-7825(00)00390-X
  27. Schrefler. B., and X. Zhan, 1993. A fully coupled model for water flow and airflow in deformable porous media. Computer Methods in Applied Mechanics and Engineering 29: 155-167.
  28. Shin, G. H., and S. W. Park, 2006. Effect of hysteresis on soil-water characteristic curve with weathered granite and gneiss soil slopes during rainfaill infiltartion. Journal of the Korean Geotechnical Society 22(7): 55-64 (in Korean).
  29. Springman, S. M., C. Jommi, and P. Teysseire, 2003. Instabilities on moraine slopes induced by loss of suction: a Case History. Geotechnique 53(1): 3-10 https://doi.org/10.1680/geot.2003.53.1.3
  30. Terzaghi, K., 1925. Principles of Soil Mechanics, Engineering News Record, 95(19)-(23), 95(25)-(27): 742-746, 796-800, 832-836, 874-878, 912-915, 987-990, 1026-1029, 1064-1068.

피인용 문헌

  1. Evaluation of Hydraulic Conductivity Function in Unsaturated Soils using an Inverse Analysis vol.55, pp.4, 2013, https://doi.org/10.5389/KSAE.2013.55.4.001