面板坝堆石体蠕变量数学模型的原型验证

研究面板堆石坝堆石体的蠕变变形对于维持大坝安全稳定运行有重要意义。为寻找最理想的堆石体蠕变模型并确定其模型参数,结合五座面板堆石坝工程实例,对三种常用堆石体蠕变模型进行了原型验算和比较。结果表明,指数模型计算的蠕变量最接近实际情况。最后分析了指数模型的参数确定方法,得到较为合理的结果,可为其他堆石坝的沉降量估算提供参考。

Mathematical Model Prototype Verification of Face Dam Rockfill Creep

The study of the rockfill creep deformation has important significance for the safety and stability operation of the CFRDs. In order to find the most ideal model and determine the model parameters for rockfill creep, taking five CFRDs as examples, three kinds of commonly rockfill creep model were compared based on the prototype. The results show that the creep deformation calculated by the index model was closest to the actual situation. Finally, the determination method of index model parameters was analyzed, and a reasonable result was gained, which can provide reference for settlement estimation of other rockfill dams.