Research On Active Fault Earthquake Safety Evaluation Of Engineering Sites

Earthquake safety evaluation is related to both sustainable development of national economy and people's life property safety.The “The earthquake prevention disaster reduction law” regulates that,it is necessary to do the earthquake resistance according to the requirement and the results of the earthquake safety estimation for the large important engineering and construction projects which may occur severe disaster.Seismic safety evaluation plays a key role in urban construction.It provides scientific ground-motion parameters and sets up reasonable seismic standard.Also it puts forward precise standard for the engineering seismic design.Then to some extent,the loss caused by destructive earthquake will be reduced and the aim of earthquake disaster reduction will be realized.This present paper summarized the different methods of Seismic safety evaluation on active fault,and took the guangfeng-pingxiang(Shangrao section)fault as example.At the same time the article evaluated this fault activity,furthermore discuss the influences of the fracture the city construction.Based on the large amount of working on collection the earthquake geological material and systematically analysis,the conclusion are made that,although guangfeng-pingxiang(Shangrao section)fault is a deep big fracture,according to the fracture structure,geomorphic features and chronology study,this fault belongs to pre-Quaternary.Furthermore the jiangshan-shaoxing fault which is connected to guangfeng-pingxiang fault has the same activity also belongs to pre-Quaternary.The conclusions of this paper can give scientific guidance for the feasibility study,designing,and earthquake disaster reduction method of construction engineering.