复杂坝基上多种材料坝的三维渗流有限元分析

用三维渗流有限元分析法分析了某坝１４＃坝段以左的基础及岸坡渗流场分布规律；评价了帷幕、排水措施的效果以及２２＃坝段不同宽缝水位时土坝接头处的侧向渗流及土坝的侧向渗流稳定状况；得出了２１＃和２２＃坝段稳定安全有裕度的情况下可以放宽宽缝抽排水的要求或不抽水的结论。

3 D Finite Element Analysis of Seepage Flow through a Dam Composed of Different Materials on Complicated Foundation

The seepage and hydraulic head distribution of the seepage field involved in the whole three dimensional domam to the left of block No 14 of a dam are analized with finite element method. The effectiveness of the grout curtain and the draining measures is evaluated . The seepage and stability of the earth dam in the longitudinal direction in the area of the connection between the earth dam and the concrete dam are also analysed for the different water level in the internal wide joint of dam block No 24. It is concluded that the requirement for drainage in the wide joint may be lowered, or may become unnecessary if the stability of dam blocks No 21 and No 22 is large enough.