Results show that the distributions of the permeability coefficient and anti-permeability strength are all subject to lognormal distribution, normal distribution, extremum I distribution and F distribution, and the lognormal distribution has the best fitt
Results show that the distributions of the permeability coefficient and anti-permeability strength are all subject to lognormal distribution, normal distribution, extremum I distribution and F distribution, and the lognormal distribution has the best fitt
粗砂的渗透系数和抗渗强度概型分布均符合对数正态分布、正态分布、极值I型分布和г分布，其中以对数正态分布的拟合效果最好。