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2025 Vol.58, Issue 3 Preview Page

Research Article

Assessment of deterioration for the maintenance of water distribution system

상수도관망의 유지관리를 위한 노후도 평가

Jin Woo Hana
,
Hyuk Jae Kwonb*
한 진우a
,
권 혁재b*
aDoctoral Student, Department of Civil Engineering, Cheongju University, Cheongju, Korea
bProfessor, Department of Civil Engineering, Cheongju University, Cheongju, Korea
a청주대학교 토목공학과 박사과정
b청주대학교 토목공학과 교수
*Corresponding Author
31 March 2025. pp. 241-249
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Abstract

In this study, the deterioration assessment model using MCS (Monte Carlo Simulation) was applied to the water distribution system in 9 regions of Gyeongsangbuk-do, and its applicability was verified by comparing it with the grades obtained through the direct evaluation method. The grades derived from the indirect evaluation method, the modified indirect evaluation method, and the deterioration analysis method using MCS were compared and analyzed against those obtained through the direct evaluation method. To compare the grades of the deterioration analysis method using MCS with those of the direct evaluation method, the difference between the maximum and minimum slopes in deterioration graph was analyzed by applying the grade ratio of the conventional indirect evaluation method. The comparison between the grades of the indirect evaluation method and the direct evaluation method showed that 45 out of 81 pipelines matched, resulting in 55.56% agreement rate. When comparing the grades of the modified indirect evaluation method and the direct evaluation method, 54 out of 81 pipelines matched, achieving 66.67% agreement rate. Lastly, the comparison between the grades of the deterioration analysis method using MCS and the direct evaluation method revealed that 64 out of 81 pipelines matched, resulting in 79.01% agreement rate.

Keywords
Deterioration rate
Monte Carlo Simulation
Water distribution system
Aging index
Pressure index
Direct evaluation method

본 연구에서는 MCS (Monte Carlo Simulation)를 사용한 노후도 산정 모형을 경상북도 9개 지역 상수도관망에 적용하고 직접평가법 등급과 비교하여 모형의 적용성을 검증하였다. 이를 위해 간접평가법, 수정 간접평가법, MCS를 적용한 노후도 분석법의 결과와 직접평가법 등급을 비교 및 분석하였다. MCS를 적용한 노후도 분석법과 직접평가법 등급을 비교하기 위해 관경별 노후도 그래프에서 최대 기울기와 최소 기울기의 차이를 간접평가법의 등급 비율과 동일하게 적용하였다. 간접평가법 등급과 직접평가법 등급을 비교한 결과 81개 중 45개 상수도관이 일치하여 55.56%의 일치도를 나타냈고 수정 간접평가법 등급과 직접평가법 등급을 비교한 결과 81개 중 54개 상수도관이 일치하여 66.67%의 일치도를 나타냈다. MCS를 적용한 노후도 분석법 등급과 직접평가법 등급을 비교한 결과 81개 중 64개 상수도관이 일치하여 79.01%의 일치도를 나타냈다.

키워드
노후도
Monte Carlo Simulation
상수도관망
노후지수
압력지수
직접평가법
References
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Information
  • Publisher :KOREA WATER RESOURECES ASSOCIATION
  • Publisher(Ko) :한국수자원학회
  • Journal Title :Journal of Korea Water Resources Association
  • Journal Title(Ko) :한국수자원학회 논문집
  • Volume : 58
  • No :3
  • Pages :241-249
  • Received Date : 2024-12-20
  • Revised Date : 2025-01-23
  • Accepted Date : 2025-02-03
  • DOI :https://doi.org/10.3741/JKWRA.2025.58.3.241
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