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混凝土面板堆石坝地震永久变形的预测非常重要。根据它可直接判断大坝的安全，并为抗震预留坝高提供依据。一个时期以来，同时计入堆石料残余体应变对面板坝永久变形计算有多大影响存有争议。采用饱和排水动三轴试验方法得到的动应力～残余应变关系计算坝体的永久变形，所得数值一般偏大。而风干堆石料在排气状态下的三轴试验，目前只能考虑残余剪应变。本文利用前人对不同试验方法得到的动应力～残余应变关系进行面板堆石坝地震永久变形计算做了比较，结果表明：由于坝体运用期间有部分堆石浸水，故其永久变形的计算对浸水线以上坝体采用风干料排气试验结果只考虑残余剪应变，浸水线以下坝体采用饱和料排水试验结果同时计入残余体应变和残余剪应变，比整个坝体采用饱和料排水试验结果同时计入残余体应变和残余剪应变为合适。
Prediction of seismic permanent deformation of concrete faced rockfill dam is very important. According to it, it can directly judge the safety of the dam and provide the basis for the dam height reserved for the earthquake. Since a period of time, it has been debated how much influence of the strain of residual rockfill materials on the calculation of permanent deformation of the panel dam has been controversial. The permanent deformation of the dam body is calculated by the dynamic stress-residual strain relationship obtained from the saturated drainage dynamic triaxial test. The obtained values are generally large. However, the triaxial tests of air-dried rockfill materials in the exhaust state can only consider the residual shear strain. In this paper, the predecessors calculated the permanent earthquakes of CFRD by dynamic stress-residual strain obtained from different test methods. The results show that due to the partial flooding during the operation of the dam, the permanent deformation of the rockfill dam The results of the air-dried material exhaust test above the submerged line only consider the residual shear strain. The results of the saturated material drainage test for the dam below the submerged line also account for the residual body strain and the residual shear strain, compared with the whole dam body using the saturated material drainage test result It is appropriate to include residual body strain and residual shear strain at the same time.