DEVELOPMENT OF EVALUATION METHOD FOR OPPORTUNITY LOSS OF REGIONAL ECONOMIC ACTIVITIES DUE TO WATER PIPE DAMAGE - A CASE STUDY FOR N CITY, AICHI PREFECTURE-

Abstract

 Water supply is an essential lifeline for civil life and socioeconomic activities. In preparation for an impending great disaster, it is necessary to realize a tough water supply system by not only improving earthquake-resistant, but also enabling rapid restoration after the disaster. The purpose of this study is to develop an evaluation method for emergency restoration strategies that can evaluate not only the population of water outage and firefighting functions but also the economic opportunity loss of the region during the daily restoration process. Discrete damage estimation method was used to estimate the probabilistic damage locations on the actual pipe network. In one of the damage scenarios, the number of restoration days was calculated by the emergency restoration model, the pipe network was analyzed reflecting the pipe damage, and the restoration process of the water cut population, firefighting function, and economic activity in the region was calculated by numerical analysis using the economic opportunity loss evaluation model. As a result, it was shown that the method developed in this study can be used to examine emergency recovery strategies from a comprehensive perspective that combines the civil life and economic activities.