摘要
利用有限单元法对土石坝进行渗流分析,得出了库水位下降过程中按稳定渗流和非稳定渗流所得坝体浸润线之间的平均相对误差,建立了渗流参数与浸润线平均相对误差的内在联系,提出了由组合参数判定非稳定渗流坝体浸润线简化计算条件的3组判据。这与前人通过实验和水力学方法得到的结论基本吻合。
Based on seepage finite element analysis for homogeneous earth dam, average relative errors between wetting fronts obtained from steady seepage and unsteady seepage calculations respectively are calculated when water level in reservoir falls. Internal relation between seepage parameters and average relative errors from wetting lines is found, and three criteria to judge calculation condition about unsteady seepage wetting line location described by an assembled parameter (k/(μv))are presented. And they are elementarily consistent with conclusion made by experiment and hydraulics methods.
出处
《长江科学院院报》
CSCD
北大核心
2004年第4期60-62,共3页
Journal of Changjiang River Scientific Research Institute
关键词
土石坝
非稳定渗流
坝体
浸润线
水力学
steady seepage
unsteady seepage
assembled parameter
wetting front
