稳定渗流作用下出逸坡降的随机分析

Stochastic Analysis of Exit Gradients Caused by Steady Seepage

利用局部平均(local average)法和协方差分解法生成的各向异性随机场来模拟单隔水板桩下的透水型地基土层的渗透系数的空间变异分布,并结合有限元法绘制出随机流网图,从而刻画出稳定渗流作用下的出逸坡降的统计特征,为实际工程风险评价提供科学依据。

The anisotropic random field is generated by the local average method and covariance matrix decom- position method, which can be used to simulate the spatial variation of permeability of soil layers with a sheet pile. The Finite element method can be combined with the random field to draw the stochastic flow net, which can be used to reflect the statistic characteristics of exit gradients. The result of the calculation can provide scientific reference for practical engineering risk assessment.