基于IGW的各项异性地层渗流数值计算分析

摘要

渗流严重危害着水利工程，以往渗流分析集中在各项同性，但近些年对某些复杂地层的研究，发现地层渗流表现出强烈的各项异性，而且各项异性的危害性比各项同性更大。为了实现对土石坝各项异性地层的二维渗流场真实区域的数值模拟，利用IGW数值模拟软件，基于孔隙介质模型，求解土石坝各项异性地层的渗流场，对正常蓄水位渗流场进行模拟分析。结果表明，坝体浸润线随各项异性的增大而逐渐抬高，浸润线出逸点坡降逐渐变小；增加各地层渗透系数（K）值，地基渗透流量（Q）随渗透系数的增加而加大，浸润线逸出坡降也加大，结果可为土石坝各项异性地层渗流计算及工程所需的合理防渗措施提供依据。%Seepage seriously endanger water conservancy ,seepage analysis in the past focused on same fea-tures,but in recent years the study of certain complex formation found seepage strata showed a strong anisotropy,and the its dangers is greater than the former.In order to achieve a two-dimensional numerical sim-ulation of the real area of earth dam seepage field formations of the opposite ,the use of numerical simulation software IGW,porous media model,solving anisotropic earth dam seepage field formations of the normal water level seepage field simulation analysis.The results showed that the dam seepage line with the opposite increas-es gradually elevated,the saturation line Yat-point gradient becomes smaller;increased permeability layer over the(K) values,the foundation infiltration flow(Q) with the permeability coefficient increased infiltration escape gradient line also increased,the results can be reasonably embankment dam seepage control measures anisotropic formation seepage and provides evidence for engineering required.