Based on the analysis of seismic damage effect and induced secondary disasters on urban gas piping systems

the seismic damage characteristics and influencing factors were discussed

such as seismic intensity

geologic conditions and piping system characteristics. Moreover a series of earthquake disaster mitigation approaches were proposed for urban gas piping system

including:(a)aseismatic design of urban gas facilities; (b)erosion monitoring and replacement of old pipelines;(c)automatic gas shutoff system and district gas supply; (d) gas supply recovery after fault finding and treatment of damage pipelines; (e)establishment of realtime seismic data acquisition and rapid pipeline damage estimation system; (f)establishment of emergency response management system; (g)establishment of urban gas network seismic disaster risk assessment and simulation system.