저수지 월류 시 여수토 접속부 세굴에 따른 붕괴 현상의 실험적 연구
An Experimental Study of Reservoir Failure Phenomena According to Transitional Zone: Spillway Scour During Overflow
2
조회
0
다운로드
8
인용
0
참고문헌
키워드
초록
This study is a preliminary investigation into the development of a construction method that will protect a reservoir even during over flows caused by severe flooding. Through hydraulic modeling tests, the destructive phenomena caused by spillway-junction scour during reservoir overflow were modeled, and the effects on the embankment during such an overflow and the spillway-junction movements are discussed. The reservoir destruction model used the Tanbu reservoir, located in Gangwondo Chuncheon-si Namsanmyeon (H＝22 m, L＝115 m), as the model reservoir and created an embankment with a 1/60 ratio. We review the spillway-junction safety factor during overflow and embankment movement following reinforcement measures for three different cases: no reinforcement, cemented sand and gravel (CSG) reinforcement and water-blocking sheet reinforcement. The results of this study confirmed that when the spillway-junction is exposed to soil, it is very vulnerable to overflow and that a water-blocking sheet or CSG reinforcement are very effective measures in preventing embankment destruction in the long-term period.
Abstract
This study is a preliminary investigation into the development of a construction method that will protect a reservoir even during over flows caused by severe flooding. Through hydraulic modeling tests, the destructive phenomena caused by spillway-junction scour during reservoir overflow were modeled, and the effects on the embankment during such an overflow and the spillway-junction movements are discussed. The reservoir destruction model used the Tanbu reservoir, located in Gangwondo Chuncheon-si Namsanmyeon (H＝22 m, L＝115 m), as the model reservoir and created an embankment with a 1/60 ratio. We review the spillway-junction safety factor during overflow and embankment movement following reinforcement measures for three different cases: no reinforcement, cemented sand and gravel (CSG) reinforcement and water-blocking sheet reinforcement. The results of this study confirmed that when the spillway-junction is exposed to soil, it is very vulnerable to overflow and that a water-blocking sheet or CSG reinforcement are very effective measures in preventing embankment destruction in the long-term period.
참고문헌 (14)
- 안소라, "기상인자가 농업용 저수지 저수량에 미치는 영향 연구", 한국농공학회논문집, 49(4), pp.3~12 (2007), 한국농공학회
- Chinnarasri, C, "A laboratory study of peak discharge and erosion profile during embankment overtopping", Dam Engineering, 14(4), pp.233~256 (2004)
- Chung, H. W., "Development of the optimal reservoir storage determination model for supplying rural water", Journal of the Korean Society of Agricultural Engineers, 40(2), pp.69~80 (1998)
- Dunn, R. J., "Centrifuge modeling of earth dam overtopping", Proc. of 5th Engineering Mechanics Division Specialty Conference, pp.1320~1323 (1984)
- Hanson, G. J., "Evaluating mechanics of embankment erosion during overtopping", Proc. of 7th Federal Interagency Sedimentation Conference, pp.24~30 (2001)
- 임은상, "원심모형시험기를 이용한 댐수위 변화에 따른 댐체의 거동 모사", 대한토목학회 논문집C, 25(2C), pp.95~102 (2005), 대한토목학회
- Jang, J. S, "Application of PMF on reinforcement design of agricultural reservoirs against disaster", Proc. of the 2005 KSAE Annual Conference, pp.324~329 (2005)
- Jeong, W. S, "Characterization of cemented sand for building of levee", Journal of the Korean Society of Hazard Mitigation, 6(4), pp.29~36 (2006)
- 김영익, "차수매트 포설 범위에 따른 저수지 월류시 거동 특성", 한국농공학회논문집, 52(2), pp.59~66 (2010), 한국농공학회
- Lee, J. T, "An experimental study on the collapse phase of a river leeves(Ⅱ)", Journal of Korea Water Resources Association, 34(2), pp.155~167 (2001)
- Lemperiere, F., "A new analysis of embankment dam failures by overtopping", Transactions of the International Congress on Large Dams, pp.1053~1066 (2006), International Commission on Large Dams
- Powledge, G. R., "Overtopping of small dams - an alternative for dam safety", Proc. of the Special Conference, Hydraulics and Hydrology in the Small Computer Age, pp.1071~1076 (1985)
- Toledo, M. A, "Embankment dams slip failure due to overtopping", Transactions of the International Congress on Large Dams, pp.317~330 (1997), International Commission on Large Dams
- Toledo, M. A, "Initiation phase of rockfill dams breaching by overtopping", Transactions of the International Congress on Large Dams, pp.507~518 (2006), International Commission on Large Dams