【摘要】 堆石体属于典型的多孔材料,其渗透特性与颗粒的形状、大小及分布特征关系密切。研究表明,在渗流速度较大时应对达西定律加以修正。结合堆石体颗粒的概率统计分布模型,建立了堆石体颗粒含量与渗透系数之间的经验关系式,把渗透率和堆石体的粒径特征结合起来。在工程设计中可以通过合理调整堆石体的粒径级配,达到控制其渗透能力的目的。更多还原

【Abstract】 Rockfill is a typical porous medium, and its seepage is closely related to the particle shape, particle-size and its distributing characteristics. It is proved through experimental research that the Darcy law should be revised to adapt to high seepage velocity. And an empirical formula is established to describe the relation between particle content and seepage coefficient through probability statistical distributing characteristics of particles in rockfill. So the seepage rate and statistical characteristics of rockfill particles can be organically combined together. Changing the gradation rationally is a feasible method to control the seepage ability of rockfill in engineering.更多还原