摘要
建立了二维渗流方程的有限元表达式,比较了某工程实例防渗帷幕建造前、后渗流速度和出溢处水力坡降的变化情况。计算表明,除帷幕底部小范围内渗流速度有所上升外,其它地区的渗流速度及下游出溢处的水力梯度均显著降低。在运用悬挂式防渗帷幕时,要注意提高帷幕底部的抗冲刷能力。
The finite element expressions of two-dimensional seepage equations are obtained. The Darcian velocities after the suspended curtain construction are compared with that before it as well as the hydraulic gradients on the location where water comes out in the downriver. The results have showed that they decreased notably except that the velocities increased in small curtain bottom areas. The anti-scour performance should be improved on the curtain bottom when it is used in the hydraulic projects.
出处
《岩土力学》
EI
CAS
CSCD
北大核心
2005年第1期105-107,共3页
Rock and Soil Mechanics
基金
国家自然科学基金资助项目(59979001)
关键词
悬挂式帷幕
防渗
渗流速度
水力梯度
抗冲刷
Computer simulation
Finite element method
Hydraulic structures
Scour
Seepage
Two dimensional
