Abstract:The construction of high rockfill dam has a rapid development especially in the last 20 years. These high dams with large storage capacity are located in a complex geological environment.All these projects whose slopes are precipitous are large-scale projects and would lead to serious consequences for accidents

the problem that how to effectively use its safety monitoring informations

and control its working state in-time and scientifically to ensure the safe operation of the dam is related to people's livelihood.Based on the prototype monitoring data series of Yele asphalt concrete core rockfill dam and 3-D finite element calculation results

the gray aging model of GM(1

1

t) was applied to displacement hybrid-model of high earth-rock dam for the first time.The displacement hybrid-model established was applied to Yele rockfill dam.The results shows that the displacement hybrid model has a high precision and an effective prediction，which can meet the engineering requirements.Moreover

the model factor of this kind of model has a definite physics meaning

and the convergence and divergence of aging displacement components may be judged easily

and the dam can be monitored highly contrapuntally. The model has some reference value for model research of same dam.