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在深厚覆盖层上建筑的高砾石土心墙堆石坝得到迅猛发展的同时,正确地认识坝体变形规律和合理地数值模拟是不可忽视的问题。堆石坝变形的影响因素多且复杂,监测成果的分析对研究上述问题具有重要意义。以硗碛大坝的监测资料为基础,结合坝体的填筑和蓄水过程,对位于深厚覆盖层上的百米级砾石土心墙堆石坝的变形规律进行了系统分析,并与其坝高、覆盖层深度、河谷宽度等方面都具有相似性的毛尔盖大坝监测资料进行了对比分析。通过分析两座大坝监测结果,对坝体的变形特性进行了规律性总结,对湿化和蠕变作用以及水库填筑和蓄水过程对坝体变形的影响有了一定认识。分析结论可为正确认识以及合理模拟和预测同类坝体的变形特性提供参考和依据。
With the rapid development of high-gravelly core-rockfill dam constructed on the deep overburden, it is a problem that can not be neglected to correctly understand the dam deformation law and reasonable numerical simulation. The influencing factors of rockfill dam deformation are many and complex. The analysis of monitoring results is of great significance for studying the above problems. Based on the monitoring data of Qiyao Dam and the filling and water storage process of the dam, the deformation rules of the 100-meter gravelly earth core rockfill dam located on the deep overburden are systematically analyzed and compared with the dam height , Covering depth, valley width and other aspects of the similarity of the Mauer dam monitoring data were analyzed. By analyzing the monitoring results of two dams, the deformation characteristics of the dam are regularly summarized. Some understandings are made on the effects of wetting and creeping as well as the effect of reservoir filling and water storage on the dam deformation. The conclusions can provide reference and basis for correct understanding and reasonable simulation and prediction of deformation characteristics of similar dam.