Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Comparison of Coefficient of Consolidation and Prediction of Excess Pore Water Pressure of Agricultural Reservoir under Embankment on Soft Ground

연약지반상에 축조된 농업용저수지의 과잉공극수압 예측과 압밀계수의 비교

  • 이달원 (충남대학교 지역환경토목과) ;
  • 김은호 (충남대학교 대학원)
  • Received : 2009.12.31
  • Accepted : 2010.02.11
  • Published : 2010.03.31
Download PDF
⟨ Previous Next ⟩

Abstract

This study was carried out to comparison of coefficient of consolidation and the prediction of excess pore water pressure in agricultural reservoir on soft clay ground. For the purpose of verification of the proposed equation, laboratory model tests and field tests were performed and excess pore water pressure was compared to those predicted with the Terzaghi's method. The predicted excess pore water pressure according to ponding was very applicable to practice because it was close to the observed data. Also, for the comparison of coefficient of consolidation, the oedometer, constant rate of strain (CRS), and Rowe cell tests were performed. The coefficient of consolidation at the Rowe cell and CRS tests showed a greate increase than in the oedometer test. The ratio of the vertical and horizontal coefficient of consolidation showed a large difference according to various tests method and mixing ratio. Therefore, it is recommended that careful attention should be paid to predicting the required consolidation period in agricultural reservoir.

Keywords

References

  1. Budhu, M., 2000. Soil Mechanics and Foundations. New York. John Wiley and Sons. 166-168.
  2. Chu, J., M. W. Bo, M. F. Chang, and V. Choa, 2002. Consolidation and permeability properties of Singapore marine clay. J. of Geoenvironmental engineering 128 (9): 724-732. https://doi.org/10.1061/(ASCE)1090-0241(2002)128:9(724)
  3. Duncan, J. M., 1993. Limitations of conventional analysis of consolidation settlement. Journal of Geotechnical Engineering ASCE 119(9): 1331-1359. https://doi.org/10.1061/(ASCE)0733-9410(1993)119:9(1331)
  4. Indraratna, B., and A. S. Balasubramaniam, 1992. Performance of test embankment constructed to failure on soft marine clay. Journal of Geotechnical Engineering Division ASCE 118(1): 12-33. https://doi.org/10.1061/(ASCE)0733-9410(1992)118:1(12)
  5. Lee, D.W., and H. J. Yoon, 2005. Estimation of degree of consolidation in soft ground using field measurements and rheology model. J. of Korean Society of Agricultural Engineers 47(2): 87-96 (in Korean). https://doi.org/10.5389/KSAE.2005.47.2.087
  6. Leroueil, S., F. Tavenas, B. Trak, P. La. Rochelle, and M. Roy, 1978. Construction pore pressures in clay foundations under embankments. Part I : The Saint-Alban test fills. Canadian Geotechnical Journal 15(1): 54-65. https://doi.org/10.1139/t78-005
  7. Leroueil, S., and F. Tavenas, 1986. Discussion on effective stress paths and yielding in soft clays below embankments. Canadian Geotechnical Journal 23(3): 410-413. https://doi.org/10.1139/t86-064
  8. Mesri, G., and Y. K. Choi, 1985. Settlement analysis of embankments on soft clays. Journal of Geotechnical Engineering Division ASCE 111(4): 441-464. https://doi.org/10.1061/(ASCE)0733-9410(1985)111:4(441)
  9. Min, H.G., and D. W. Lee, 2008. Prediction of excess pore water pressure of reservoir embankment on soft ground. J. of Korean Society of Agricultural Engineers 50(2): 37-44 (in Korean). https://doi.org/10.5389/KSAE.2008.50.2.037
  10. Rowe, P. W., and L. Barden, 1966. A new consolidation cell. Geotechnique 16(2): 162-170. https://doi.org/10.1680/geot.1966.16.2.162
  11. Rowe, R. K., C. T. Gnanendran, A. J. Valsangkar, and A. O. Landva, 2001. Performance of a test embankment constructed on an organic clayey silt deposit. Canadian Geotechnical Journal 38(6): 1283-1296. https://doi.org/10.1139/cgj-38-6-1283
  12. Sheahan, T. C., and P. J. Watters, 1996. Using an automated Rowe cell for Constant rate strain consolidation testing. Geotec. Testing Journal 19(4): 354-363. https://doi.org/10.1520/GTJ10713J
  13. Smith, R. E., and H. E. Wahls, 1969. Consolidation under constant rates of strain. Journal of Geotechnical Engineering Division ASCE 95(2): 519-539.
  14. Terzaghi, K., 1943. Theoretical Soil Mechanics. John Wiley and Sons, New York.
  15. Wissa, A. E. Z., J. T. Christian, E. G. Davis, and S. Heiberg, 1971. Analysis of consolidation at constant strain rate. J. of the Soil Mechanics and FoundationsDivision ASCE 97(10): 1393-1413.
  16. Zhu, G., J. H. Yin, and J. Graham, 2001. Consolidation modelling of soils under the test embankment at Chek Lap Kok International Airport in Hong Kong using a simplified finite element method. Canadian Geotechnical Journal 38(2): 349-363. https://doi.org/10.1139/cgj-38-2-349