The Journal of Engineering Geology (지질공학)

The Korean Society of Engineering Geology (대한지질공학회)
권호 표지

A Laboratory Test for Detecting the Infiltrating Characteristics of Unsaturated Soil in Soil Slide

흙사면 절개지 불포화토의 침투거동 특성에 관한 연구

  • Kim Man-Il (Korea Institute of Water and Environment, Korea Water Resources Corporation) ;
  • Chae Byung-Gon (Geological & Environmental Hazards Div., Korea Institute of Geoscience and Mineral Resources) ;
  • Jeong Gyo-Cheol (Dept. of Earth and Environmental Sciences, Andong National University)
  • 김만일 (한국수자원공사 수자원연구원) ;
  • 채병곤 (한국지질자원연구원 지질환경재해연구부) ;
  • 정교철 (안동대학교 지구환경과학과)
  • Published : 2005.12.01
Download PDF
⟨ Previous Next ⟩

Abstract

In order to estimated a reason of soil slope failure new measurement technology is demanded to measure a variation of volumetric water content which is a key physical parameter for understanding the slope failure in the field. In this study a laboratory soil tank test were conducted to use RDB and ADR measurement probes for measuring the variation of volumetric water content. These experiments were compared with two physical parameters as volumetric water content and pressure water head which are estimated to the compacted weathered granite soil under the artificial rainfall, 7.5mm/hour, in the whole of two stages. From the results the variation of volumetric water content and pressure water head is represented to nearly similar travel time.

흙 절개지 사면붕괴 원인은 대부분 강우에 의해 체적함수비의 증가에 따라 발생되기 때문에 체적함수비 변화를 측정할 수 있는 새로운 측정기 술이 요구된다. 본 연구에서는 체적함수비 변화를 정량적으로 측정하기 위하여 유전율 측정시스템인 FDR과 ADR 측정프로브를 사용하여 실내 토조시험을 수행하였다. 총 2단계 에 걸쳐 시간당 7.5mm/hour의 인공강우 조건하에서 압밀 화강풍화토 내 발생되는 체적 함수비와 간극수압 변화를 측정하여 비교하였다. 측정결과, 인공강우에 의한 체적 함수비와 간극수압 변화는 거의 동일한 시점에서 함께 파악되었다.

Keywords

References

  1. 김만일, 정교철, 박창근, 2004, 지하댐 지반 물성치 측정을 위한 유전율 측정 시스템 개발, 지질공학, 14(4), pp. 361-369
  2. 김영민, 1999, 유한요소법에 의한 사면붕괴 거동해석에 미치는 영향분석, 한국지반공학회논문집, 15(5), pp. 19-28
  3. 정교철, 손호웅, 김상환, 서용석, 2001, 사면안정해석, 도서출판 엔지니어즈, p. 224
  4. Ayalew, L., Yamagishi, Y., Marui, H. and Kanno, T., 2005, Landslides in Sado island of Japan: Part II. GIS-based susceptibility mapping with comparisons of results from two methods and verifications, Engineering Geology, 81, pp. 432-445 https://doi.org/10.1016/j.enggeo.2005.08.004
  5. Abrmason, L. W., Lee, T. S., Sharma, S. and Boyce, G M., 1996, Slope stability and stabilization methods, John Wiley & Sons, Inc., p. 629
  6. Doussan, C., Jouniaux, L. and Thony, J.-L., 2002, Variations of self-potential and unsaturated water flow with time in sandy loam and clay loam soils, Journal of Hydrology, 267, pp. 173-185 https://doi.org/10.1016/S0022-1694(02)00148-8
  7. Elsen, E. V. D., Xie, Y, Liu, B., Stolte, J., Wu, Y., Trouwborst, K. and Ritsema, C. J., 2003, Intensive water content and discharge measurement system in a hillslope gully in China, Catena, 54, pp. 93-115 https://doi.org/10.1016/S0341-8162(03)00059-6
  8. Kan, W.F., Beck, T.J. and Hughes, J.J., 2001, Applications of time domain reflectometry to landslide and slope monitoring. Proceeding of the symposium TDR 2001: Innovative Applications of TDR Technology, Infrastructure Institute, Northwestern University, Evanston, Illinois, September 5-7, 2001
  9. Kim, J.-H., Jeong, S.-S., Park, S.-W. and Sharma, J., 2004, Influence of rainfall-induced wetting on the stability of slopes in weathered soils, Engineering Geology, 75, pp. 251-262 https://doi.org/10.1016/j.enggeo.2004.06.017
  10. Miller, J.D. and Gaskin, G.J., 1996, The development and application of the ThetaProbe soil water sensor, MLURI Technical Note, P. 14, MacaulyLand Use Research Institute, Aberdeen
  11. Ng, C. W. W. and Shi, Q., 1998, A numerical investigation of the stability of unsaturated soil slopes subjected to transient seepage, Computers and Geotechnics, 22(1), pp.1-28 https://doi.org/10.1016/S0266-352X(97)00036-0
  12. Ponizovsky, A. A., Chudinova, S. M. and Pachepsky, Y. A., 1999., Performance of TDR calibration models as affected by soil texture, Journal of Hydrology, 218, pp. 35A1
  13. Wilson, L. G.,L. G. Everett and S. J. Cullen, 1995, Handbook of vadose zone characterization & monitoring: Part V- Preliminary monitoring-related activities (Ch. 12), Lewis Publishers, USA, pp. 177-188