南水北调工程南沙河强透水地基渠段渗透压力数值模拟研究

Preliminary Study on the Numerical Simulation of Osmotic Pressure of the Canal Section at Strong Pervious Foundation in the Southern Shahe River in the South-to-North Water Diversion Project

南沙河中间明渠为南水北调工程中典型的高地下水强透水地基渠段，现通过三维有限元数值模拟技术初步研究了该渠段的渗透压力分布情况，总结了渠底、渠坡在设置排水孔情况下渗透压力的变化规律，并提出了在这类渠道设计中应重点注意的问题。该研究成果对于高地下水强透水层渠道设计具有借鉴意义和参考价值。

The middle open canal of the Southern Shahe River is the typical section with the strong pervious foundation and high water in the South-to-North Water Diversion Project. In the paper, the osmotic pressure distribution of this section was researched preliminarily by means of the three-dimensional finite element numerical simulation. The variation laws of the osmotic pressure at the situation of drainage holes in the ca- nal slope and bottom were summarized. And the key problem in this kind of channel design was introduced. The research findings could provide reference value for the strong pervious foundation and high water channel design.