2023年度全国大会(第58回論文発表会)

Presentation information

Journal of CPIJ

no75-82

Sun. Nov 12, 2023 9:00 AM - 11:50 AM 第I会場 (A棟 G19教室)

司会:本間 裕大(東京大学)、田中 健一(慶應義塾大学)、関口 達也(京都府立大学)、沖 拓弥(東京工業大学)

10:00 AM - 10:20 AM

[78] Analysis on the sustainability of water pipeline maintenance

○Ren Kawanabe1, Yoshiaki Ohsawa2 (1. University of Tsukuba(NEC Corporation), 2. University of Tsukuba)

Keywords:waterworks, pipeline rehabilitation, off-grid, Markov chain, Weibull distribution

This study aims to quantify the timing of water pipeline renewal through a simple analytical model applied to water utility entities nationwide, and to examine quantitatively the reduction of maintenance burden through pipeline reduction using specific pipeline network data. Firstly, utilizing water supply statistics data that comprehensively cover information on 1,388 water utility entities nationwide, we predict the timing of pipeline renewal and compared among regions, with the aid of Markov chain models and Weibull distribution while assuming the maintenance of the current pipeline network. Secondly, we conduct a study on off-grid, using network analysis based on the geographical configuration and age information of the actual water pipeline in Namegata City, Ibaraki Prefecture.