Journal of Korea Water Resources Association (한국수자원학회논문집)

Korea Water Resources Association (한국수자원학회)
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Risk analysis of the old pipe networks for priority determination of renovation

노후 상수관망 개량 우선순위 결정을 위한 구역별 위험도 분석

  • Lee, Jae Hyeon (Department of Civil Engineering, Cheongju University) ;
  • Lee, Sang Mok (Department of Civil Engineering, Cheongju University) ;
  • Park, Byung Soo (Department of Civil Engineering, Gangwon State University) ;
  • Kwon, Hyuk Jae (Department of Civil Engineering, Cheongju University)
  • 이재현 (청주대학교 토목공학과) ;
  • 이상목 (청주대학교 토목공학과) ;
  • 박병수 (강원도립대학교 토목공학과) ;
  • 권혁재 (청주대학교 토목공학과)
  • Received : 2022.07.13
  • Accepted : 2022.08.23
  • Published : 2022.12.31
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Abstract

In this study, management index method has been developed to estimate the level of deterioration, applied to Cheongju city, and compared with the previous estimation methods of deterioration level of water distribution system. From the results, distribution systems of Yullyang, Naedeok1 and Yongam2 are found to be seriously deteriorated. And it was also found that probability of pipe breakage was estimated as 3.21%, 4.64% which is highest level at the steel pipe of 200 mm and 300 mm diameter. It was found that risk degree was estimated as 0.2609, 0.2644 by using management index method in Naedeok1 which is the most dangerous distribution system in the city. It was also found that results of risk analysis by management index method have been similar with the results of safety analysis by reliability method and indirect estimation method of deterioration level. Therefore, newly developed management index method can be applied and may be useful to the estimation of deterioration level for the future maintenance and management of water distribution system.

본 연구에서는 노후도를 보다 간단히 평가할 수 있는 운영지수 분석법을 개발하였고 이를 기존의 노후도 분석법과 비교 분석하였다. 청주시 상수관망에 적용하여 노후도를 비교 분석하였으며 사용성을 입증하였다. 기존의 간접평가법 분석결과, 율량동(구시가지), 내덕1동, 용암2동 상수관망의 노후도가 가장 높은 것으로 분석되었으며, 신뢰성해석을 통한 안전도 분석 결과 내덕1동 상수관망이 직경 200 mm, 300 mm 강관 모두 파괴확률 3.21%, 4.65%로 안전도가 가장 취약한 것으로 분석되었다. 운영지수 분석법의 경우, 내덕1동 상수관망이 직경 200 mm, 300 mm 강관 모두 위험도 0.2609, 0.2644로 가장 높은 것으로 분석되었으며, 개량 우선순위는 비슷한 것으로 나타났다. 따라서 향후 운영지수 분석법을 통해 상수도관을 보다 간단하게 노후도를 분석하여 상수관망의 운영관리에 활용이 가능할 것으로 판단된다.

Keywords

Acknowledgement

본 연구는 국가물산업클러스터 "2022 물기술사업화를 위한 미니클러스터형 프로젝트랩 사업"으로 지원받는 과제임.

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