【摘要】 为了探究大坝的裂缝原因并评估安全性状态,以白河堡水库大坝的观测资料为依据,对大坝的后期变形规律和渗流稳定性进行分析。白河堡水库大坝监测结果表明,坝体后期变形显著,直至近年逐渐趋于稳定。基于坝体后期变形监测数据和右岸岸坡劈坡设计,认为坝体端部不均匀沉降是发生坝顶裂缝的重要原因。坝体实测浸润线和计算浸润线均较低,坝体防渗体和排水设施均运行良好。大坝渗流变形均为稳定状态,可判断大坝为安全运行状态。更多还原

【Abstract】 In order to explore the causes of dam cracks and evaluate the safety state, based on the monitoring data of Bai-Hepu core rockfill dam, we analyzed the characteristics of the long-term deformations and seepage of the dam. The monitoring data of Bai-HePu core rockfill dam shows that the long-term deformation is significant, and increment of the long-term deformation can be ignored in recent years. Based on the characteristics long-term deformation and the slope cutting design of the right bank, the paper found that that the nonuniform settlement of the dam end is the nonnegligible cause of the crack on the dam crest. Both the monitoring value and the FEM calculated value of saturation are very low, and the impervious core and drainage facilities run well. Based on the deformation and the seepage field of the dam, the paper deduced that the dam is in the security status.更多还原