STUDY ON SEISMIC RISK OF OFF-SITE ROADS IN SICHUAN AND YUNNAN AREA
The seismic risk assessment of off-site roads in water conservancy and hydropower projects plays an important role in the implementation progress of the project.Road outside the engineering field in Sichuan-Yunnan area is taken as the research object,and the fuzzy set theory and the judg-ment matrix method are used to establish a comprehensive evaluation mathematical model of the damage of the two major factors of geological environment and seismic risk,and to analyze the possi-bility of road damage after the earthquake in 37 prefectures and cities.The analysis shows that the road outside the project site in Sichuan-Yunnan area is more likely to suffer from moderate earth-quake damage,and the index of earthquake risk damage to the road outside the project site in Si-chuan is higher than the earthquake risk assessment value in Yunnan.