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针对强震区高面板堆石坝的特点,提出了基于稳定、变形、面板防渗体系安全的高面板坝抗震安全评价和极限抗震能力分析方法,并建议了坝坡抗震稳定、坝体局部动力稳定、坝体地震残余变形、面板防渗体系的抗震安全评价标准。对坝高超过250 m的某高面板堆石坝进行了极限抗震能力分析,根据坝坡稳定性、地震残余变形、单元抗震安全性、面板防渗体系抗震安全性等多角度的评价结果,初步认为,该高面板堆石坝的极限抗震能力为0.50g~0.55g。
Aiming at the characteristics of high concrete face rockfill dam in strong earthquake area, the seismic safety evaluation and ultimate seismic capacity analysis method of high concrete face rockfill dam based on the stability, deformation and panel anti-seepage system are proposed. The dam dynamic stability, dam local dynamic Stability, residual deformation of dam, seismic evaluation of anti-seepage system of panel. Based on the results of multi-angle evaluation of dam slope stability, seismic residual deformation, seismic safety of the unit and anti-seismic safety of the anti-seepage system of the dam, preliminary analysis is carried out on the ultimate seismic capacity of a CFRD with a height of more than 250 m. It is considered that the ultimate seismic capacity of this high concrete faced rockfill dam is 0.50g ~ 0.55g.