Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
권호 표지
DOI QR코드

DOI QR Code

Experimental study on non-linear throughflow characteristics of rockfill gabion weir

돌망태 보 통과류의 비선형적 흐름 특성에 관한 실험적연구

  • Han, Ilyeong (Technical Research Center, Biryong Corporation) ;
  • Lee, Jaejoung (Technical Research Center, Biryong Corporation) ;
  • Kim, Gyoo bum (Department of Construction Safety and Disaster Prevention, Daejeon University)
  • 한일영 ((주)비룡 기술연구소) ;
  • 이재정 ((주)비룡 기술연구소) ;
  • 김규범 (대전대학교 건설안전방재공학과)
  • Received : 2020.08.05
  • Accepted : 2020.08.28
  • Published : 2020.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

As the flow velocity and Reynolds number increase in rockfill porous media, the flow deviates from Darcy conditions. In this study, the permeability tests of rock column specimen and laboratory gabion weir model were carried out to investigate a head loss behaviour of flow through rockfill deposition in small river artificial recharge. Through column test, the nonlinear relationships between flow velocity and hydraulic gradient and coefficients were determined and the correlation formula of hydraulic mean radius and coefficients was proposed. The flow velocities and discharges in voids estimated by proposed equations were well matched with the measured values of laboratory gabion weir model.

자갈 입자로 구성된 다공성매질에서는 유속이 증가하여 레이놀즈수가 커지게 되면 흐름은 Darcy의 영역을 벗어나게 된다. 본 연구는 인공함양 유역의 소하천에 설치예정인 돌망태 보의 채움재를 통과하는 비선형적인 흐름특성을 규명하기 위하여 자갈칼럼과 돌망태모형을 이용한 투수실험을 수행하였다. 칼럼실험을 통하여 공극유속과 수리경사의 관계식과 계수를 결정하고, 수리평균반경과의 상관관계식을 제안하였다. 제안식으로 부터 계산된 공극유속과 공극유량은 돌망태모형 투수실험의 측정치와 잘 일치하였다.

Keywords

References

  1. Ergun, S. (1952). "Fluid flow through packed columns." Chemical Engieering Progress, Vol. 48, pp. 89-94.
  2. Forchheimer, P. (1901). Wasserbewegung durch Boden. 45th Edition, Zeitschrift des Vereins deutscher Ingenieure, Dusseldorf, Germany, pp. 1781-1788.
  3. Garga, V.K., Townsend, R., and Hansen, D. (1991). "A method for determing the surface area of quarried rocks." ASTM Geotechnical Testing Journal, Vol. 14, No. 1, pp. 35-45. https://doi.org/10.1520/GTJ10189J
  4. Han, I.Y., and Kim, G.B. (2019). "Water storage and intake performance of gabion weirs during recharge." The journal of Engineering geology, Vol. 29, No. 4, pp. 393-403. https://doi.org/10.9720/kseg.2019.4.393
  5. Hansen, D. (1992). The behavior of flowthrough rockfill dams. Ph.D. dissertation, University of Ottawa, Canada, pp. 7-36.
  6. Hussein, A.K., Morii. T., and Hattori, K. (1997). "Determination of nonlinear head loss equation of flow through rockfill by one dimensional column tests." Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering, JSIDRE, No. 192, pp. 59-69.
  7. Hussein, A.K., Morii. T., and Hattori, K. (1998). "Determination of discharge flow through rockfill gabion weir." Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering, JSIDRE, No. 195, pp. 123-131.
  8. Martins, M. (1990). "Principle of rockfill hydraulics." Advances in rockfill structures, Edited by Maranha das Neves, E., Kluwer Academic Publishers, Boston, M.A., U.S., pp. 523-570.
  9. Michioku, K., Maeni, S., Furasawa, T., and Haneda, M. (2005). "Discharge through a permeable rubble mound weir." Journal of Hydraulic Engineering, ASCE, Vol. 131, No. 1, pp. 1-10. https://doi.org/10.1061/(ASCE)0733-9429(2005)131:1(1)
  10. Mohammad, S., Hassan, R., and Reza, S. (2013). "Non-darcy flow of water through a packed column test." Article in Transport in porous media, Springer Science+Business Media, Switzerland, pp. 215-227.
  11. Sabin, C.W., and Hansen, D. (1994). "The effects of particle shape and surface roughness on the hydraulic mean radius of a porous medium consisting of quarried rock." Geotechnical Testing Journal, GTJODJ, Vol, 17, No. 1, pp. 43-49. https://doi.org/10.1520/GTJ10071J
  12. Shariq, A., Hussain A., and Ahmad, Z. (2020). "Discharge equation for the gabion weir under through flow condition." Journal of Flow Measurement and Instrumentation, Elsevier, Vol. 74, pp. 1-8.
  13. Sidiropoulou, M.G., Moutsopoulos, K.N., and Tsihrintzis, V.A. (2007). "Determination of Forchheimer equation coefficients a and b." Hydrological Processes, Vol. 21, No. 4, pp. 534-554. https://doi.org/10.1002/hyp.6264
  14. Stephenson, D. (1979). Rockfill in hydraulic engineering. Elsevier Science Publishing Company, Amsterdam, Netherlands, pp. 19-37.
  15. Taylor, D.W. (1948). Fundamentals of soil mechanics. Wiley, N.Y., U.S., pp. 122.
  16. Wilkins, J.K. (1956). "Flow of water through rock fill and its application to the design of dams." Proceedings, second Austrailian-New Zealand conference on soil mechanics and foundation engineering, Canterbury, New Zealand, pp. 141-149.
  17. Zingg, T. (1935). "Contribution to the gravel analysis." Petrographic Messages, Vol. 15, pp. 39-140.