대한토목학회논문집 (KSCE Journal of Civil and Environmental Engineering Research)

  • 제36권6호
  • /
  • Pages.1133-1143
  • /
  • 2016
  • /
  • 1015-6348(pISSN)
  • /
  • 2799-9629(eISSN)
대한토목학회 (Korean Society of Civil Engeneers)
권호 표지
DOI QR코드

DOI QR Code

하수관거정비 임대형민자사업에 있어 침입수 성과지표의 개선에 관한 연구 - 제주특별자치도를 중심으로 -

Improvement of Infiltration Performance Measurement in BTL (Build-Transfer-Lease) Sewer Rehabilitation Projects - Focusing on Jeju Special Self-Governing Province -

  • 투고 : 2016.08.09
  • 심사 : 2016.09.13
  • 발행 : 2016.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

본 연구는 하수관거정비 임대형민자사업에 있어 사업효과 분석지표의 개선에 대한 연구이다. 하수관거정비 임대형민자사업의 평가지표 중 침입수에 대한 평가지표는 단일평가항목으로 17.5점의 높은 점수가 부여되고 있다. 침입수에 대한 평가지표는 침입수의 발생량에 초점을 맞추어 평가되고 있으며, 현재 '야간 생활하수 평가법'에 따라 계산되고 있다. 그러나, 본 평가지표가 제주지역의 지질적 특성을 반영하지 못하고 있다는 것이 운영단계에서 문제점으로 대두되고 있다. 따라서 본 연구에서는 제주지역을 중심으로 평가지표에 따른 계산 결과와 실제 침입수의 발생량을 비교 분석하고자 하였다. 이를 위해서 제주도내 5개 지역에 대하여 '야간 생활하수 평가법'에 따른 침입수 발생량을 분석하였다. 또한 실제적으로 침입수가 발생하는 조건에 대하여 전수조사를 실시하였다. 분석 결과, 지하수위가 하수관거보다 밑에 분포되고 있으며, 하수관거의 기능에 대한 검증 결과 하수관거의 결함 등에 의한 침입수 발생은 없는 것으로 분석되었다. 따라서 현재 평가지표로 활용되고 있는 '야간 생활하수 평가법'은 제주지역에 적용하기에 적합하지 않다는 결론에 도달하게 되었으며, 제주지역만의 침입수 관련 기준 마련이 필요할 것으로 사료된다.

The purpose of this study is to improve project performance analysis indicators for BTL sewer rehabilitation projects. Among the assessment indicators for BTL sewer rehabilitation projects, an infiltration assessment indicator is given a high score of 17.5 points as a single assessment item. This infiltration assessment indicator is assessed focusing on the amount of infiltration, and presently calculated according to 'Nighttime Domestic Flow Evaluation' method. However, this assessment indicator's failure to reflect the geological features of Jeju region is emerging as a problem in the operational stage. Thus, this study intended to compare and analyze the calculation result depending on the assessment indicators and the actual amount of infiltration, centering on Jeju region. To this end, this study analyzed the amount of infiltration in five areas of Jeju Province calculated according to 'Nighttime Domestic Flow Evaluation' method. Also, a complete enumeration survey was carried out about the conditions for actual infiltration occurrence. According to the results of this survey, ground water level is distributed lower than the level of sewer pipes. The results of a sewer pipe function test show there was no infiltration occurrence caused by sewer pipe defect. So, it is concluded that 'Nighttime Domestic Flow Evaluation' method, which is utilized for the current assessment indicator, is not appropriate to apply to Jeju region, and it is thought that there is a need to establish infiltration criteria specialized for Jeju region.

키워드

참고문헌

  1. Ahn, D. H. (2014). A Study on Improvement of Fixed Flowmeter Installation and I/I Performance Evaluation in Sewer Rehabilitation BTL Project, Ph.D. Dissertation, Gyeongsang National University (in Korean).
  2. DEP (1993). Guidelines for performing infiltration/inflow analyses and sewer system evaluation survey, Department of Environmental Protection, Boston.
  3. EPA (1985). Infiltration/inflow : I/I analysis and project certification, Ecology Publication No. 97-03, US Environmental Protection Agency, Washington.
  4. EPA (1991). Sewer System Infrastructure analysis and rehabilitation handbook, EPA/625/6-91/030, US Environmental Protection Agency, Washington.
  5. Jeju Special Self-Governing Province (2009). Soil Report for Basic Planning of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  6. Jeju Special Self-Governing Province (2010). Request for Proposal of Enforcement Agreement in BTL Sewer Rehabilitation Projects (in Korean).
  7. Jeju Special Self-Governing Province (2011). Detailed Design Report of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  8. Jeju Special Self-Governing Province (2013a). Quality Assurance/Quality Control(QA/QC) Investigation Report of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  9. Jeju Special Self-Governing Province (2013b). Completion Inspection Report of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  10. Jeju Special Self-Governing Province (2013c). CCTV Inspection Report ; As-Built Documents of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  11. Jeju Special Self-Governing Province (2013d). Hydraulic Calculation Report ; As-Built Documents of 2009 year' BTL Sewer Rehabilitation Projects in Jeju City (in Korean).
  12. Kim, I. S. (2009a). Development and Application of I/I Index on Sewer System, Ph.D. Dissertation, University of Seoul (in Korean).
  13. Kim, S. H. (2013). Analysis of characteristics for infiltration and inflow occurrence on sewer system in Asan city, Master's Thesis, Kongju National University (in Korean).
  14. Kim, S. J. (2008). Infiltration/Inflow Estimation with Yearly Influent Sewage on Residential Style, Ph.D. Dissertation, Sunchon National University (in Korean).
  15. Kim, T. G. (2009b). A Study for the Generation Characteristics of Infiltration/Inflow(I/I) in Urban Area, Master's Thesis, Gyeongsang National University (in Korean).
  16. Korea Environment Corporation (2002). Feasibility Study Report for Pilot Projects(Step 1) in Han river with sewer rehabilitation (Area 1-6) (in Korean).
  17. Korea Environment Corporation (2003). Basic Design Report for Pilot Projects (Step 1) in Han river with sewer rehabilitation (Area 1-6) (in Korean).
  18. Korea Water and Wastewater Works Association (2010). Standard Specification for Sewer Pipe Construction Works (in Korean).
  19. Lee, J. H. (2009). Index of infiltration in sewer rehabilitation, Master's Thesis, Chung-Ang University (in Korean).
  20. Ministry of Environment (MOE) (2007). Documentation Guidelines of Master Plan for Sewerage Improvement (in Korean).
  21. Ministry of Environment (MOE) (2009a). Guideline for Operation & Management on Public Sewerage Facilities(Revised Version) (in Korean).
  22. Ministry of Environment (MOE) (2009b). Standard Manual for Estimating Infiltration/Inflow on Sewer Pipes (in Korean).
  23. NDF (2005). Regional drainage policies technical document vol. 4 : Inflow, infiltration and exfiltration, National Development Plan.
  24. Tchobanoglus, G., Burton, F. L. and Stensel, H. D. (2004). Wastewater engineering: Treatment and Reuse, 4th ed., Metcalf and Eddy Inc., New York.
  25. WEF and ASCE (1994). Exiting sewer evaluation and rehabilitation. 2nd ed., WEF Manual of Practice FD-6 and ASCE Manual and report on engineering practice no. 62, New-York.
  26. WPCF (1969). Design and construction of sanitary and storm sewer, MO9, WPCF Manual of Practice No. 9 and ASCE Manual on Engineering Practice No. 37, New-York.