【摘要】 本文综合考虑了宁夏大坝电厂周围２５０ｋｍ范围内的地质、地球物理方面的有关资料，建立了三维有限元模型。利用该模型模拟了该区域的构造应力场，进而对大坝电厂厂址区及附近进行了地震危险性分析。在分析工作中结合安全度的定义提出了危险系数的概念及潜在震源区划分的定量－定性标志。经过分析，作者认为大坝电厂附近构造稳定性较好。更多还原

【Abstract】 This paper considers comprehensively concerned data of geology and geophysics within250 km around the Daba power plant and establishes a 3-D finite element model. The struc-tural stress field in the region is simulated by the model and then the seismic hazard there is an-alyzed.Danger coefficient and quantitative and qualitative differentiation signs of the potentialsource region are advanced according to difinition of seismic safty. It is considered that thestructural stability is better near the Daba power plant.更多还原