摘要
在研究了不稳定渗流和测压管水位过程线特性的基础上发现,因受不稳定渗流影响,不能采用常规的渗流分析方法来对待坝体浸润线的观测结果。为此,本文提出了考虑到不稳定渗流影响的渗流资料分析新方法,并编制了与新方法相适应的计算程序,采用微机进行分析计算和绘制图表。表示测压管水位上升与作用水头之比的Δh/ΔH_(cp)主要取决于库水位下所包围的面积(A-Ao)^(1/2),两者之间为S形曲线关系。此特点揭示了在不稳定渗流条件下,管水位与库水位之间的关系既非直线,也非抛物线,而是刚泊兹曲线。
According to the characteristics of unsteady seepage flow and the course of water level change in piezometer tubes, it is found that the ordinary analysis method of seepage could not be used to study the phreatic line data observed at field. This paper suggests a new analysis method of seepage data under unsteady seepage, compiles a program corresponding to the new method, and graws chart with microcomputer. The ratio value Δh/ΔH_(cp)(Δh the increase of water level in piezometer. H_(cp)——the action head) depends mainly on the wrapped area (A-A_0)^(1/2) under the reservoir water level, the relation between Δh/ΔH_(cp) and (A-A_0)^(1/2) seem to be S-shape curve. It indicates that the relation between the water level in piezometer and reservoir is neither straight line nor parabola, but Compertz curve.
