Browse > Article

The Quantitative Estimation of Erosion Rate Parameters for Cohesive Sediments from Keum Estuary  

Ryu, Hong-Ryul (Dept. of Civil Eng, Chonbuk National Univ.)
Lee, Hyun-Seung (Hyundai Development Company)
Hwang, Kyu-Nam (Dept. of Civil Eng & RICT, Chonbuk National Univ.)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.18, no.4, 2006 , pp. 283-293 More about this Journal
Abstract
The purpose of this study is to quantitatively estimate the erosional properties for cohesive sediments on Keum Estuary. Then the spatial variation was evaluated, through analyzing and comparing the seasonal variation of the erosional properties in Keum Estuary with that of the erosional properties in the other sites. As erosional properties of cohesive sediments are also influenced largely by basic physico-chemical property of cohesive sediments themselves, the impact that the basic physico-chemical property has on the erosional properties is analyzed in this study. Erosional tests are performed under the condition of uniform beds. Total 8 times of tests using an annular flume are also conducted in a location, low times respectively by seasons: the fall, winter. Experimental results of erosional tests show that the critical shear stress for erosion varies in the range of $0.12{\sim}0.36N/m^2$ and the coefficient of erosion rate varies in the range of $120.91{\sim}6.72mg/cm^2{\cdot}hr$, over the corresponding bulk-density range $1.15{\sim}1.34g/cm^3$. Although the calculated parameters of erosional properties are remarkably different in quantity compared with those of other cohesive sediments(lake Okeechobee) and Kaolinite, their seasonal variabilities within Keum Estuary appear to be insignificant.
Keywords
cohesive sediments; erosional property; physico-chemical properties; annular flume; critical shear stress for erosion(${\tau}_{ce.s}$); coefficient of erosion rate(${\varepsilon}_{M.S}$);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 박용철 (1997). 해양환경공정시험방법, 한국해양학회, 국립수산진흥원
2 황규남, 소상돈 (2002). 환형수조를 이용한 미세-점착성 퇴적물의 침식특성 조사. 한국수자원학회 학술발표회논문집(II), pp. 1075-1080
3 American Society for Testing and Materials, (1987). Annual Book of A,S,T,M. Standards, Vol. 04.08, American Society for Testing and Materials, Philadelphia, U,S,A
4 류홍렬, 천민철, 황규남 (2006). 금강 하구역 미세-점착성 퇴적물의 침강특성에 관한 연구. 한국해안해양공학회지, 제18권 제3호, pp. 251-261   과학기술학회마을
5 황규남, 소상돈, 김태민 (2005). 미세-점착성 퇴적물의 침식률 산정을 위한 실험적 연구, 한국해안 . 해양공학회논문집 제17권 제2호 pp. 119-128
6 Hwang, K.-N. and Mehta, A.J., (1989). Fine-sediment erodibility in Lake Okeechobee., Florida. UFL/COEL-89/019, Coastal and Oceanographic Engineering Dept., University of Florida, Gainesville, Florida
7 Ariathurai, R. and Arulanandan, K. (1978). Erosion rates of cohesive soils, J. Hyd. Div., Asce. 104, HY2, 279-283
8 Maa, J.P.Y. (1993). VIMS Sea Carousel: its hydrodynamic characteristics. In: Nearshore and Estuarine Cohesive Sediment Transport, A.J. Mehta (cd.), American Geophysical Union, Washington, pp. 265-280
9 황규남, 조용식, 이태환 (2002). 새만금 미세점착성 퇴적물의 침강특성 : 퇴적물의 물리.화학적 특성의 영향, 한국수자원학회논문집 제35권 제 5호 pp. 475-484
10 Mehta, A.J. (1986). Characterization of cohesive sediment properties and transport processes in estuaries, Estuarine Cohesive Sediment Dynamics, A.J. Mehta ed., Springer-Verlag, Berlin, pp. 290-325
11 황규남 (2000). 새만금 갯벌퇴적물의 침강속도 산정을 위한 실험적 연구, 대한토목학회논문집Vol.20, No. 2-B, pp. 277-286
12 Hwang, K.-N., (1989). Erodibility of fine sediment in wavedominate environments., Master's Thesis, University of Florida