한국수자원학회논문집 (Journal of Korea Water Resources Association)

  • 제49권6호
  • /
  • Pages.537-549
  • /
  • 2016
  • /
  • 2799-8746(pISSN)
  • /
  • 2799-8754(eISSN)
한국수자원학회 (Korea Water Resources Association)
권호 표지
DOI QR코드

DOI QR Code

도로 빗물받이 유입구의 차집유량 산정식

Intercepted flow equation at grate inlet on road

  • 투고 : 2016.01.29
  • 심사 : 2016.04.04
  • 발행 : 2016.06.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

일반적으로 쇠살대 빗물받이는 도로 표면유출 흐름을 차집하여 도시배수 시설로 배제하기 위하여 설치된다. 빗물받이의 규모 및 설치간격을 결정하기 위하여 빗물받이 차집유량 산정식이 필요하다. 그러므로 쇠살대 빗물받이 유입구의 차집능력 분석이 필요하다. 본 연구에서는 도로 빗물받이의 차집유량 산정을 위해 수리실험모형을 제작하여 720회의 실험을 실시하였다. 빗물받이 제원은 현재 대부분의 국도에 설치되는 크기인 $40{\times}50cm$, $40{\times}100cm$ 및 $40{\times}150cm$를 Froude 상사법칙을 이용하여 1/2로 축소 모형을 제작하였다. 측구의 유량은 도로의 차선(2~4차선), 경사(도로 종경사 2~10 %, 측구 횡경사 2~10 %) 및 설계빈도(최대 30년)을 고려하였다. 실험 결과 측구의 횡경사가 커질수록 빗물받이로 유입되는 유량은 증가하였으며, 빗물받이 유입부의 길이가 증가함에 따라 유입부 측면부를 통한 횡유입량을 증가시켜 빗물받이 유입부의 차집효율을 증가시켰다. 실측 차집유량을 이용하여 회귀분석 실시하여 빗물받이 유입구 크기별 차집유입량 산정식을 도출하였다. 기존 경험식과 비교한 결과, 도출된 산정식은 상향된 빈도를 반영한 빗물받이 유입부의 차집유량을 보다 정확하게 산정하였으며, 도로 배수시설 설계에 기초자료로 활용이 가능할 것으로 판단된다.

The grate inlets generally were installed to intercept surface runoff on the roads and intercepted flow was drained to the underground sewer system. The equation of interception flow was used to determine the size and spacing of grate inlet on the roads. Therefore, it is necessary to analyze the interception capacity of grate inlet. Hydraulic experimental apparatus which can be changed with the longitudinal slopes(2, 4, 6, 8, 10%) of street, the transverse slopes(2, 4, 7, 10%), and the lengths(50, 100, 150cm) of grate inlet was installed for this study. The range of the experimental discharges were calculated with change of road lanes(2, 3, 4) and design frequencies(5, 10, 20, 30year). As the transverse slope increased, it led to the increase of interception capacity at grate inlets. The long lengths of grate inlet with direction of flow increased the interception capacity by the increase of side inflow. On the basis of the hydraulic model experiment results, the empirical equations for calculation of the interception capacity were derived with regression analysis. As a result of comparison with equations, the suggested equation of this study was estimated reasonable one for increased design frequency. Therefore, this study can suggest the basic data for design of drainage facility at road.

키워드

참고문헌

  1. Burgi, P. H. and Gober, D. E. (1977). "Bicycle-Safe Grate Inlet Study, Vol.1-Hydraulic and Safety Characteristics of Selected Grate Inlets on Continuous Grades", Report No. FHWA-RD-77-24, Federal Highway Administration.
  2. Federal Highway Administration (1996). "Introduction to Highway Hydraulics, Hydraulic Design Series No. 4", FHWA-HI-97-028, Federal Highway Administration.
  3. Federal Highway Administration (2001). "Urban Drainage Design Manual", HEC 22, FHWA-NHI-01-021, Federal Highway Administration.
  4. Guo, J. C. Y. (2000). "Design of Grate Inlets with a Cloggin g Factor", Advances in Environmental Research, Vol. 4, No. 3, pp. 181-186. https://doi.org/10.1016/S1093-0191(00)00013-7
  5. Guo, J. C. Y. (2009). "Street Storm Water Conveyance Capacity", Journal of Irrigation and Drainage Engineering, Vol. 126, No. 2, pp. 119-123. https://doi.org/10.1061/(ASCE)0733-9437(2000)126:2(119)
  6. Johns Hopkins University (1956). "The design of Storm Water Inlets", Report of the Storm Drainage Research Committee, Department of Sanitary Engineering and Water Resources, Johns Hopkins University.
  7. Kim, J. S., Kwon, I. S., Yoon, S. E., and Lee, J. T. (2006). "An Experimental Study for Clogging Factors Estimation of Grate Inlets in Urban Area", Journal of the Korean Society of Civil Engineers, Vol. 26, No. 2B, pp. 179-186(in Korean).
  8. Lee, J. T., Yoon, S. E., Kim, K. S., Kim, Y. R., and Ryu, T. H. (2003). "An analysis of interception capability of storm water grate inlet in road" Journal of Korea Water Resources Association, Vol. 36 No. 3, pp. 465-480(in Korean). https://doi.org/10.3741/JKWRA.2003.36.3.465
  9. Linsely R. K., Franzini, J. B., Freyberg, D. L. and Tchobano glous, G. (1992). Water-Resources Engineering 4th Edition, McGRAW-Hill.
  10. Ministry of Land, Transport and Maritime Affairs (2003). The Guideline of Design and Maintenance Management for Drainage Facilities of Road.
  11. Ministry of Land, Transport and Maritime Affairs (2011). The Report of Improvement and Supplement of Probability Rainfall.
  12. Ministry of Land, Transport and Maritime Affairs (2012). Design Manual of Road.
  13. Ministry of Environment (2005). Design Criteria of Sewer Facilities.
  14. Ministry of Environment (2011). Design Criteria of Sewer Facilities.
  15. National Disaster Management Institute (2013). Development of inflow equation through the storm water grate inlet based on experiment.
  16. Pugh, C. A. (1980). "Bicycle-Safe Grate Inlet Study, Vol. 4-Hydraulic Characteristics of Slotted Inlets", Report No. FHWA-RD-79-106, Federal Highway Administration.
  17. Russo, B., Gomez, M., and Martinez, P. (2006). "A Simple Hydrological Approach to Design Inlet Systems in Urban Areas According to Risk Criteria", Proceedings of the 7Th International Conference on HydroScience and Engineering, pp. 1-15.
  18. Ryu, T. H. (2002). "An experimental study for interception capability of storm water inlet", Master's Thesis of Kyonggi University.
  19. Seoul Metropolitan Government (2002). Review of Design Criteria of Sewer Facilities for Reduction of Habitual Inundation.
  20. Whiffin, A. C. and Young, C. P. (1973). "Drainage of Level or Nearly Level Roads", Laboratory Report No. 602, Crowthorne, Berkshire : Transport and Road Research Laboratory.
  21. Wong, T. S. W. (1994). "Kinematic Wave Method for Determination of Road Drainage Inlet Spacing", Advanced in Water Resources, Vol. 17, pp. 329-336. https://doi.org/10.1016/0309-1708(94)90009-4
  22. Wong, T. S. W. and Moh, W. H. (1997). "Effective of Maximum Flood Width on Road Drainage Inlet Spacing", Water Science and Technology, Vol. 36, No. 8, pp. 241-246. https://doi.org/10.1016/S0273-1223(97)00592-1
  23. Yi, S. K., and Cho, W. C. (2002). "Effective Carrying Capacity on Road Drainage Inlets", Proceedings of KSCE Conference 2002, Korean Society of Civil Engineers, pp. 490-493(in Korean).