Analysis on urban water supply security in earthquake and post-seismic restoration

The water supply system of Mianzhu City,one of the heaviest disaster areas,was out of the service because of the seismic damage in Wenchuan earthquake.According to the statistical data of the seismic damage in its water supply system,the seismic damage characteristics of different components in water supply system is concluded.Taking the surface water supply system in western cities in China as object,this paper presents the seismic vulnerability analysis on the Water Source Reservoir,water transmission conduit,water treatment plant and water supply network.Based on the experiences of the emergency water supply in Wenchuan earthquake,the technical measures of temporary emergency water supply and recovery system water supply are proposed.Lastly,the paper determines the program of the water supply and fire protection for settlement buildings according to its demand for water.