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Continuous leakage and damage of pipes in the water pipe network can cause local ground clearance (sinkhole), therefore, the safety and disaster management of underground facilities are important. The amount of water leakage varies not only with the pressure in the pipe network, but is also affected by the connection characteristics, tube materials, installation conditions, and operating conditions of the water supply network system. Therefore, there are many limitations in estimating and managing the amount of water leakage in the water supply network, especially when they are based only on measured data. In this study, we propose a methodology to quantify the sensitivity of the parameters used in hydraulic-based leak analysis, for rational leak assessment through hydraulic analysis. The proposed methodology is applied to the representative virtual pipe network, and the variation pattern of leakage amount according to the change of coefficient is quantified. The results of this study can be used as a base, to quantify the uncertainty of the relationship between hydraulic pressure and leakage, for estimating a more realistic leakage amount.

Uncertainty Analysis for Leakage of Water Supply Networks using Pressure Dependent Leakage Analysis