Journal of the Korean GEO-environmental Society (한국지반환경공학회 논문집)

Korean Geo-Environmental Society (한국지반환경공학회)
권호 표지
DOI QR코드

DOI QR Code

Correlation Analysis of Sewer Integrity and Ground Subsidence

하수관로 건전도와 도로함몰 발생 상관관계 분석

  • Kim, Jinyoung (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Kang, Jaemo (Department of Civil and Environmental Engineering, Hanyang University) ;
  • Choi, Changho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Duhee (Department of Civil and Environmental Engineering, Hanyang University)
  • Received : 2017.04.18
  • Accepted : 2017.05.11
  • Published : 2017.06.01
Download PDF
⟨ Previous Next ⟩

Abstract

In recent years, the increasing trend of ground subsidence in major cities has caused social problems. Aged sewer pipeline as a main attribute for the subsidence is simply replaced and maintained according to a survey result with related to its buried period. However, other attributes and risk analysis for the subsidence have not been well studied yet. In this point, this study proposed various environmental and structural attributes with related to sewer pipelines and, then, a method of ground subsidence risk evaluation with a certain level of reliability. In order to find effective attributes to ground subsidence near to sewer, the nearest sewerage data were extracted at the location of subsidence in the City of Seoul, and a level of correlation was analyzed between subsidence and individual attribute. The effective weight factors for the proposed attributes was estimated through AHP analysis and its applicability was verified by comparing the actual subsidence data to the risk evaluation in the pilot study district of Seoul.

최근 도심지에서 도로함몰 발생의 증가추세가 사회문제로 대두되고 있다. 도로함몰의 주된 원인으로 주목받고 있는 노후 하수관의 경우 단순히 매설연도에 의존하여 하수관 교체 및 보수보강 등의 관리가 이뤄지고 있으며, 도로함몰 발생의 위험성예측에 대하여 많은 연구가 진행되지 않은 실정이다. 따라서, 본 연구에서는 다양한 하수관 및 주변 환경 정보를 고려하여 신뢰성 있는 도로함몰 위험도 평가 방안을 제시하고자 하였다. 영향인자 도출을 위해 도로함몰이 가장 많이 발생한 서울시를 중심으로 도로함몰 발생지점 인근의 하수관로의 정보를 추출하고, 도로함몰과 하수관로의 건전도 및 관로 주변 환경의 상관관계를 분석하였다. 또한, AHP 분석을 통해 영향인자 간 중요도를 평가하여 인자 간 가중치가 부여된 도로함몰 위험도 평가 방법을 제시하였다. 제시된 방법론의 신뢰성 검증을 위해, 시범지역에 실제 도로함몰 발생 데이터와 위험도 분석결과를 비교해 상관성을 검토하였다. 상관성 검토결과로부터 본 연구를 통해 제시된 방법을 활용하여 신뢰성 있는 도로 함몰 위험지역 예측이 가능한 것으로 확인되었다.

Keywords

References

  1. JoongAng-Ilbo (2015), Songpa, Guro-Sand Ground, Jongno-Old Sewerage, A danger zone of ground subsidence, JoongAng-Ilbo, Seoul, pp. 10 (in Korean).
  2. Kim, Y. R. (2014), Subsidence occurrence and countermeasure by sewer, Water Journal, Vol. 11.
  3. Kim, Y. S., Park, J. I., Lee, D. J. and Jeon, M. G. (2007), Evaluation of risk factors and decision making for rehabilitation of water supply network using AHP, KFIS Spring Conference 2007, Vol. 17, No. 1.
  4. Lee, H. H., Lee, E. J. and Hyoun, C. K. (2015), Analysis of risk factors on water and sewage pipeline causing the ground pore, Korea Concrete Institute Conference, pp. 711-712 (in Korean).
  5. Lee, Y. J., Park, G. A. and Kim, S. J. (2006), Analysis of landslide hazard area using logistic regression analysis and AHP (Analytical Hierarchy Process) approach, KSCE, Vol. 26, No. 5.
  6. Ministry of Environment (2015), Sewer pipe inspection manual.
  7. Park, J. S., Moon, B. S., Kim, K. S. and Lee, K. H. (2012), Determine of assessment criteria for priority on river water quality improvement using AHP, KSCE Conference 2012, Vol. 2012, No. 10.
  8. Saaty, T. L. (1983), Priority setting in complex problems, IEEE Transactions on Engineering management, Vol. EM 30, No. 3, pp. 140-155.
  9. Saaty, T. L. (1986), Axiomatic foundation of the analytic hierarchy process, Management Science, Vol. 32, No. 7, pp. 843-857.
  10. Saaty, T. L. (1994), Highlights and critical points in the theory and application of the analytical hierarchy process, European Journal of Operational Research, Vol. 74, pp. 426-447. https://doi.org/10.1016/0377-2217(94)90222-4
  11. Vargas, L. G. (1990), An overview of the analytic hierarchy process & its applications, European Journal of Operational Research, Vol. 48, pp. 2-8. https://doi.org/10.1016/0377-2217(90)90056-H