A study on vertical inlet of inflow characteristics of the Shinwol rainwater storage &amp; drainage system by design condition

Su Ho Park; Jun Oh Oh; Jae Hyeon Park; Chang Keun Park

doi:10.3741/JKWRA.2017.50.2.129

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A study on vertical inlet of inflow characteristics of the Shinwol rainwater storage & drainage system by design condition 신월빗물저류배수시설의 수직유입구 설계조건에 따른 유입특성 분석 연구

28 February 2017. pp. 129-138

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Abstract

In this study, the hydraulic model test was performed for the 3 vertical inlets of the Shinwol rainwater storage & drainage system that Seoul City plans to install, and the control discharge value actually measured was analyzed comparing to the value obtained using the theoretical control discharge equation suggested by Yu and Lee (2009). In the results, it was 66~69% compared to the value obtained from theoretical equation showing that the control discharge value according to the theoretical equation is calculated excessively. The sensitivity analysis by design factor was performed using 3 models conducted in this study and 15 hydraulic experiment models conducted in existing research Yu and Lee (2009). The sensitivity analysis of control discharge equation was performed by dividing Q_cm/Q_cp into 3 ranges. The suggested equation considered only the influence on the tangential intake structure design factor , , , , so , considered complex influence suggested equation needed to be more improved.

Keywords

Shinwol rainwater storage and drainage system

Tangential vertical inlet

Control discharge

대심도 저류 및 배수터널은 기 개발된 도시의 부족한 배수관망 능력을 보강하기 위하여 지하에 설치하는 대규모 도시홍수 배제 시설물로 원활한 홍수 유입을 위해 적정한 규모의 수직유입구가 요구되어진다. 접선형 수직유입구 설계 시 유입구의 능력을 평가하는 중요인자로 Yu and Lee (2009)가 지배유량개념을 소개하였는데, 본 연구에서는 서울시에 설치하고자 하는 신월빗물저류배수시설의 수직유입구 3개소를 대상으로 수리모형실험을 실시하고 제안된 지배유량 개념의 적정성을 평가하였다. 지배유량 이론식(Q_cp)을 이용하여 실제 측정된 지배유량(Q_cm)과 비교․분석하였는데, 그 결과 이론식 대비 66~69%로 이론식이 지배유량을 과대 산정하는 것으로 평가되었다. 지배유량 이론식의 과대산정 원인을 분석하기 위하여 Yu and Lee (2009)가 사용한 자료들과 본 연구에서 측정된 자료들을 활용하여 지배유량비(Q_cm/Q_cp)를 3가지 영역으로 분류하고 각 인자에 대한 민감도 분석을 실시하였다. Yu and Lee (2009)가 제안한 지배유량식은 접선형 수직유입구 설계인자인 , , , 에 대한 영향만 고려하였으나 , 과 연계된 변수들로 복합적으로 고려하는 식의 개선이 필요한 것으로 판단된다.

키워드

신월빗물저류배수시설

접선형 수직유입구

지배유량

References

Jain, S. C. (1984). “Tangential vertex-inlet.” Journal of hydraulic engineering, Vol. 110, pp. 1693-1699.

Jain, S. C., and Ettema, R. (1987). “Vortex-flow intakes.” Swirling flow problems at intakes, Edited by Knauss, J., Balkema, Rotterdam, Netherlands, pp. 125-137.

Kim, C. W., and Lee, D. S. (2005). “Necessity of bypass for flood damage reduction in urban area.” Journal of Korean society of civil Engineers, Vol. 53, pp. 43-49.

Kim, C. W. (2008). Design guideline of Bypass, Construction & Transportation R&D Report GOVP1200956857, Ministry of Construction & Transportation, pp. 50

Oh, J. O. (2014). A study on drop shaft inflow characteristics of the deep tunnel by design condition. M. S. dissertation, Inje University, Gimhae, Gyeongsangnam-do, Korea, pp. 73-96.

Oh, J. O., Park, J. H., and Park, C. K. (2014). “A study on drop shaft control discharge of the deep tunnel by design condition.” 2014 KWRA research conference.

Oh, J. O., Park, J. H., and Park, C. K. (2015). “Study on the control discharge characteristics of the tangential intake structure of the deep tunnel storage system in Korea.” 36^th IAHR World Congress. Hague, Netherlands.

Yu, D. Y., and Lee, H. W. J. (2009). “Hydraulics of Tangential Vortex Intake for Urban Drainage.” Journal of hydraulic engineering, Vol. 135, pp. 164-174.

Information

Publisher :KOREA WATER RESOURECES ASSOCIATION
Publisher(Ko) :한국수자원학회
Journal Title :Journal of Korea Water Resources Association
Journal Title(Ko) :한국수자원학회 논문집
Volume : 50
No :2
Pages :129-138
Received Date : 2016-07-11
Revised Date : 2017-01-09
Accepted Date : 2017-02-09
DOI :https://doi.org/10.3741/JKWRA.2017.50.2.129

Journal of Korea Water Resources Association ISSN:2799-8746(Print) 2799-8754(Online) 한국수자원학회 논문집

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