The Regional Stability and the Site Stability of Phase III Qinshan Nuclear Power Plant, China

The regional stability and regional geologic structure are closely related. On the basis of the regional geological structure and earthquake geology records, the regional earthquake characteristics and stability were analyzed and assessed in this paper. The research results show that there is no trace of new structure activity at the radius of 320 km around the site of Phase III Qinshan Nuclear Power Plant, the earthquake activity is weak and the basic intensity of the site earthquake is VI degree. The geologic structure of the site and seismic wave tests were studied, the relationships between seismic waves and the geologic structure and the site strata lithology were built based on the analysis of site geological conditions through in-situ investigations, drilling, sampling, seismic wave test of rock samples. The dynamic parameters of the site rock mass were deduced. The reliable basis was provided for the design earthquake prevention of Phase III Qinshan Nuclear Power Plant, China.