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http://dx.doi.org/10.9765/KSCOE.2011.23.4.292

Discharge Rate Prediction of a new Sandbypassing System in a Field  

Kweon, Hyuck-Min (Department of Architecture and Civil Engineering, Gyeongju University)
Park, Sang-Shin (School of Mechanical Engineering)
Kwon, Oh-Kyun (Department of Civil Engineering, Keimyung University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.23, no.4, 2011 , pp. 292-303 More about this Journal
Abstract
A new type of sand bypassing system is proposed for recovering the eroded beach in this study. This system provides an added methodology to the soft defence which is main recovery method for the coastal shore protection in the world. The study proposes a conceptional design and manufacturing procedure for the relatively small size machine of sand bypassing. In order to get the discharging volume information, the power capacity of the system is tested in the field. The discharge rate of the new system shows up to the expected maximum of 618 ton/hr which is 9.6% lower than that by theoretical calculation. It gives a resonable agreement in this system when the flow is assumed to be of the high density. In this study, the delivering volume of sand is estimated according to the discharge rate. The combination of 300 mm(12 inch) intake and 250 mm(10 inch) discharge pipe line has the pumping capacity of $103\;m^3/hr$ which is nearly the same as that of South Lake Worth Inlet sand bypassing system, Florida, U.S.A.. The proposed system added the mobility to its merit. The unit price of Florida's sand bypassing is $$8~9/m^3$ (US). The system would be economically suitable for small volume of sand because no additional equipment is necessary for the intake. The diesel fuel of 25~30 l/hr was consumed during the system operation. The multiple working system would be the next investigation target for large volume of sand.
Keywords
sand bypassing system; recovery of beach erosion; soft defence; coastal shore protection; high density flow;
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  • Reference
1 Yeend, J.S. and Hatheway, D.J. (1988). Quantification of longshore sand transport and sand bypassing at South Lake Worth Inlet, Palm Beach County, Florida, Proceedings of 21st Coastal Engineering Conference, 3, ASCE, Costa del Sol, Malaga, Spain, June 20-25, pp. 2772-2783.
2 White, F. M. (2004). Fluid Mechanics. McGrawHill
3 Dombrowski, M. R. and Mehta, A.J. (1993). Inlets and Management practices: Southeast coast of Florida. Jourmal Coastal Research, Special Issue, 18, Fort Lauderdale, Florida, 29-57.
4 권혁민 (1997). 친수성 연안 구조물. 항만. 한국항만협회, 21(2), 75-85.
5 Brunn, P. (1993). An update on sand bypassing procedures and prices, Journal Coastal Research, Special Issue, 18, Fort Lauderdale, Florida, 277-284.
6 Boswood P.K. and Murray R.J. (2001) World-wide Sand Bypassing System: Data Report, Queensland Government, Environmental Protection Agency, Conservation technical report, 15 (R20), August, 5p and pp. 19-22, p 56.
7 김영득, 김성구, 최상호 (2004). 최신 유체기계, 문운당.
8 울산광역시 울주군 (2009). 온산 덕신일원 하상오니 준설공사 보고서.
9 권혁민, 김인호, 이정렬, 이화경, 우승룡, 류간성 (2004). 미국 플로리다州의 沿岸域 防災에 관한 調査報告書. 항만, 한국항만협회, 90, 28-57.
10 권혁민, 한유식, 박상신, 고경래, 이정렬, 김인호 (2007). 이동식 샌드바이패싱 장비의 기본구조 및 목표설정. 대한토목학회 정기학술대회, 항만 및 해양, 622-625.
11 권혁민 (1999). 21세기형 연안역 구상(I)-면적방호방식에 의한 환경친화적 연안공간 구성-. 한국수자원학회지, 32(2), 43-51.