关键词: 大坝, 运行期, 抗震复核, 安全评价

Abstract: The seismic safety evaluation of dams must run through the whole life cycle of a dam,including design,construction and operation periods,etc.During the operation period,due to the changes in the internal and external conditions of the dam,it is necessary to timely review and evaluate the earth- quake resistance standards and capacity of the dam to ensure the dam operation safety.Based on the statistical analysis of the seismic safety review of hydropower dams during the operation period,the practical experience of seismic safety evaluation in the regular dam safety inspections is analyzed.Based on the quantitative analysis of the calculation results of seismic safety review of hydropower dams during the operation period,the method for rapid estimation of dam seismic capacity with the variation of seismic parameters is studied.The above-mentioned research results are of reference significance for the continuous seismic safety evaluation of dam structures in the whole life cycle.

Key words: dam, operation period, seismic review, safety evaluation