粗粒土颗粒渗透系数计算模型的研究

渗透系数是渗流分析中最基本的也是非常重要的计算参数，研究粗粒土颗粒渗流系数计算模型为工程设计提供相对准确可靠数据尤为重要．基于理想致密圆球的渗流模型，将粗粒土颗粒粒径不同级配折算成基于理想渗流模型下的等效粒径，建立粗粒土颗粒流体的渗透系数计算模型．经理论分析建立起渗流系数与粗粒土颗粒等效粒径关系的计算模型，并通过实测数据验证模型的计算精度．为进一步研究多孔介质多组颗粒粒径混比综合渗流系数的计算提供新的途径．

Permeability Coefficient Computing Model of Coarse-grained Soil Particles

Permeability coefficient is the most basic and important parameter in seepage analysis, and the research on flow factor model of coarse-gained soil particles provide a relatively accurate and reliable data for engineering design. The paper introduces the permeability coefficient calculation model of coarse-grained soil particles fluid based on the ideal percolation model of the compact ball, converting coarse-grained soil particles with different gradation to equivalent size. The computing model between the flow coefficient and the equivalent size of coarse-grained soil particles is established according to theoretical analysis, and the accuracy of the model is also verified through the measured data, which provides a new way for the further calculating study on the integrated flow coefficients of porous medium with groups of particle sizes.