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黄河沙坡头水利枢纽坝基岩体主要为泥岩、页岩等软岩类 ,工程岩体属Ⅴ类岩体。为了探讨开挖造成的回弹变形 ,需要选择合适的地基变形力学模型。结合该工程地基岩体的特点 ,选择了合理的地基力学模型和计算参数 ,并进行了三维有限元计算 ,得出了可供工程应用的结果
The dam foundation of the Shapotou Water Control Project of the Yellow River is mainly composed of soft rocks such as mudstone and shale. The engineering rock mass is a type V rock mass. In order to explore the springback deformation caused by excavation, the appropriate foundation deformation mechanics model needs to be selected. Combined with the characteristics of the rock mass of the project foundation, a reasonable foundation mechanical model and calculation parameters are selected, and the three-dimensional finite element calculation is carried out, and the results that are available for engineering application are obtained