Abstract
Sustaining water supply requires appropriate improvement and renewals in actual pipe network system. In case of selecting a target pipe to improve or renew from enormous pipes and finding an effective additional route, it is desirable to examine all possible cases. Although hydraulic pipe network analysis gives information about hydraulic illness of the system under the given condition, it dose not support enumerating all possible cases of condition. Therefore systematic enumeration approach using simple and easy way substituting for hydraulic evaluation is required.
This paper assumes that water supply performance is strongly described by connection structure of pipe network, and discusses new index that shows water supply stability of network system. Assumption is verified by correlation with hydraulic index. Methodology for seeking pipe to be improved is shown through explicit enumeration process.
