基于软岩料填筑的面板堆石坝应力变形分析研究

Analysis and Study on Slab Rock-fill Dam Stress Deformation based on Soft Rock Material Filling

随着国内外面板堆石坝筑坝技术的不断成熟,在面对各种复杂的地质条件及筑坝材料的多样性上的不断发展。目前,基于软岩料的筑坝技术也不断在走向成熟,渐已成为更多坝型的选取材料。我国幅员辽阔,地震带诸多,使得许多大坝不得不建在强震高发区,故基于软岩料填筑的面板堆石坝的控制设计中的抗震版块显得极为重要。文章采用三维有限元数值模拟,结合面板堆石坝筑坝材料的静力计算本构模型,在实际水利枢纽工程的基础上对基于软岩料填筑的面板堆石坝进行三维有限元分析,并将所得结论与工程实测数据进行对比验证数值模拟分析的可行性,计算得出的结论及成果对类似工程的控制设计具有一定的指导意义。

With gradual ripeness of domestic and foreign damming technology for slab rock fill dam,variability facing to all kinds of complex geological conditions and damming materials is developed constantly. At present,the damming technology of soft rock material also turns to mature constantly and becomes material selected for more dam types. China is vast in territory with many seismic zones,which causes many dams to be constructed in high incidence area of strong earthquake,therefore,the earthquake resistance section is vital important in control design of facing rock fill dam based on soft rock material filling. In this paper,three-dimensional finite elements were adopted,in combination with the static force calculation model of slab rock-fill damming material,the three-dimensional finite element was analyzed for slab rock-fill dam with soft rock material filling based on actual hydraulic key project,and the conclusion was compared with observed project data to verify the feasibility of valuable simulation analysis,meanwhile,the results calculated and achievements is very meaningful for the control design of similar projects.