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신월 빗물저류배수시설의 연속강우 대비 안정적 운영을 위한 수리적 안정 특성에 대한 실험 연구

An experimental study on characteristics of hydraulic stability for stable management prepare continuous flood in Shinwol rainwater storage and drainage system

  • 오준오 (인제대학교 공과대학 토목도시공학부) ;
  • 김영도 (인제대학교 공과대학 환경공학과) ;
  • 전상미 (인제대학교 공과대학 토목도시공학부)
  • Oh, Jun Oh (Department of Civil and Urban Engineering, Inje University) ;
  • Kim, Young Do (Department of Environment Engineering, Inje University) ;
  • Jun, Sang Mi (Department of Civil and Urban Engineering, Inje University)
  • 투고 : 2020.04.22
  • 심사 : 2020.05.13
  • 발행 : 2020.06.30

초록

급격한 도시화로 인한 도시홍수가 최근 들어 자주 발생하고 있다. 본 연구에서는 도시홍수를 방어하기 위해 국내최초로 건설중인 신월 빗물저류배수시설을 대상으로 수리모형실험을 실시하였다. 총 55가지 시나리오에 대한 실험을 실시하였는데 그 중 19가지 시나리오에서 월류가 발생하였다. 또한 월류가 발생한 시나리오에 대한 비디오 분석결과, 불규칙 단파가 이동하면서 시설 내 압축공기를 배기시키는 과정에 월류가 발생하는 것으로 분석되었다. 본 연구 결과를 바탕으로 향후 연속강우에 대한 신월 빗물저류배수시설에 대한 안정적 운영을 위해서 완전배수 또는 만관상태를 유지하는 것이 유리할 것으로 판단되고 유입유량의 크기, 월류, 불규칙 단파간의 상관관계에 대한 추가 연구가 필요할 것으로 판단된다.

Urban flooding due to rapid urbanization has recently become frequent. In this study, a hydraulic model experiment was conducted on Shinwol rainwater storage and drainage system constructed for the first time in South Korea to prevent urban flooding. Experiments were preformed for 55 scenarios, of which 19 overflows occurred. In addition, the video analysis for the scenarios where the overflow occurred showd that the overflow occurred during the process of exhausting the pressurized air in the facility and the undular bore were moving. Results of this study, it was judge that it would be advantageous to maintain a completely drained or full-pipe condition for stable operation of the Shinwol rainwater storage and drainage system for continuous rainfall in the future. And it is necessary to additional research on the correlation for the magnitude of inflow discharge, overflow and undular bore.

키워드

참고문헌

  1. Cho, H.I., Lee, K.S., and Lyu, S.W. (2017). "An experimental investigation on the behavior of water-air two-phase flows in a horizontal pipe." Journal of the Korean Society of Safety, Vol. 32, pp. 75-81.
  2. Choi, S.H., and Lee, S.O. (2016). "The numerical simulation considering air pressure and the influence factor analysis of geyser in a stormwater tunnel with large diameter." Journal of the Korean Society of Hazard Mitigation, Vol. 16, pp. 133-139. https://doi.org/10.9798/KOSHAM.2016.16.2.133
  3. Guo, Q., and Song, C.C.S. (1990). "Surging in urban storm drainage systems." Journal of Hydraulic Engineering, Vol. 116, pp. 1523-1537. https://doi.org/10.1061/(ASCE)0733-9429(1990)116:12(1523)
  4. Kushiyama, K., Kamioka, S., and Yamada, T. (2003). "Development of numerical model concerning the behavior of water and air in a long inverted siphon. A proposal of unsteady numerical model based on hydraulic experiment model." Journal of Japan Society Hydrology and Resources, Vol. 16, pp. 527-540. https://doi.org/10.3178/jjshwr.16.527
  5. Mori, H., Nasu, M., Morita, H., and Matsubara, M. (2003). "A study of air mixing and discharge in rainwater sewers by hydraulic model testing." Journal of Environmental Conservation Engineering, Vol. 32, pp. 328-336. https://doi.org/10.5956/jriet.32.328
  6. Oh, J.O. (2019). "An experimental study on the influence of undular bore on the hydraulic stability at Shinwol rainwater storage and drainage system." Journal of Korea Water Resources Association, Vol. 52, pp. 129-138.
  7. Oh, J.O., Park, J.H., and Jun, S.M. (2020). "An experimental study on increased pressure in Shinwol rainwater storage and drainage system by undular bore." Journal of Korea Water Resources Association, Vol. 53, pp. 303-312. https://doi.org/10.3741/JKWRA.2020.53.4.303
  8. Sekoguchi, K., Mori, K., Kaji, M., Miwa, M., Nakazatomi, M., and Shimizu, H. (1996). "Characteristics of interfacial profiles in upward and downward gas-liquid two-phase plug flow." Heat Transfer-Japanese Research, Vol. 25, pp. 568-579. https://doi.org/10.1002/(SICI)1520-6556(1996)25:8<568::AID-HTJ6>3.0.CO;2-V
  9. Tada, A., Hosoda, T., Inoue, K., and Kitahara, M. (1994). Fundamental characteristics of partially free surface unsteady flows in a circular conduit. Annuals disaster prevention research institute of Kyoto university, Vol. 37, Disaster Prevention Research Institute, Kyoto, Japan, pp. 475-488.
  10. Vasconcelos, J.G., and Wright, S.J. (2005). "Experimental investigation of surges in a stormwater storage tunnel." Journal of Hydraulic Engineering, Vol. 131, pp. 853-861. https://doi.org/10.1061/(ASCE)0733-9429(2005)131:10(853)
  11. Watanabe, M., Kanda, T., Okada, M., and Kanki, K. (2000). "Pressurised-flow with masses of air at manholes in urban sewer pipe system." Journal of Japan Society Hydrology and Resources, Vol. 44, pp. 551-556.
  12. Wright, S.J., Lewis, J.W., and Vasconcelos, J.G. (2011). "Physical processes resulting in geysers in rapidly filling storm-water tunnels." Journal of Irrigation and Drainage Engineering, Vol. 137, pp. 199-202. https://doi.org/10.1061/(ASCE)IR.1943-4774.0000176
  13. Zhao, C.H., Zhu, D.Z., Sun, S.K., and Liu, Z.P. (2006). "Experimental study of flow in vortex drop shaft." Journal of Hydraulic Engineering, Vol. 132, pp. 61-68. https://doi.org/10.1061/(ASCE)0733-9429(2006)132:1(61)