黄河柴家峡水电站坝址区地震动参数研究

本文结合柴家峡水电站坝址区的地震地质环境、历史地震特征以及场地条件，采用考虑地震分布时空不均匀性的综合概率法，对场区进行了地震危险性分析，在此基础上给出了坝址区５０年超越概率６３．２％、１０％、２％三个概率水准的设计地震动参数，为大坝的抗震设计和安全运营提供了依据。

STUDY ON GROUND MOTION PARAMETERS OF CHAIJIAXIA DAM, THE YELLOW RIVER

According to the seismogeology background,historical earthquakes and site condition in Chaijiaxia Hydropower Saution,this peper gives the results of seismic risk analysis adopting the synthetical probsbilistic method,in which the characteristics of inhomogeneity of earthquake distribution both in space and time are considerd sufficiently. On the basis of those studies, the design ground motion Parameters of dam are presented with 63. 2 Percent, 10 percent and 2 Percent of transcendental probability during a Period of 50 years. These results can be applied to earthquake resistant design and safety work of Chaijiaxia Dam.