摘要
论述下为砂层、上为粘性土覆盖层双层堤基的非稳定渗流 ,计算了砂层和覆盖层因体积胀缩、水动延滞所引起的水头滞后。对于某些特殊的土质条件 ,导出了解析解 ;对于普遍的情况 ,则应用数值法拉普拉斯逆变换求出了数值解。研究结果可用于堤防的渗流计算 。
The unsteady ground flow in double strata media under the levees is analyzed.The hysteresis effect of hydraulic head in sand strata due to elastic property of sand and clay strata is studied.The solutions for some particular conditions are deduced by analytical method and the numerical solution for general conditions is established by using the method of numerical inversion of Laplace transform.The result can be applied to calculation of seepage,designing and monitoring of levees.
出处
《水利学报》
EI
CSCD
北大核心
2002年第8期82-86,共5页
Journal of Hydraulic Engineering
关键词
双层堤基
非稳定渗流
渗流
堤防
groundwater flow
double strata media
beneath the levee
analytical method
