土坝渗流对地下水位动态影响三维有限元分析  

3D finite element analysis on influence of seepage from embankment dam on ground water level

作　　者：周建国[1] 李涛[1] 郭雪莽[2] 

机构地区：[1]华北水利水电学院,河南郑州450008 [2]浙江水利水电专科学校,浙江杭州310018

出　　处：《水利水电技术》2006年第2期110-112,共3页Water Resources and Hydropower Engineering

摘　　要：根据某平原水库的蓄水过程和地质、结构特点,建立了饱和-非饱和非稳定渗流计算模型,采用三维有限元方法模拟了坝址区域地下水位在水库蓄水过程中的动态变化过程.通过计算分析表明,在水库运行2年后,距截渗沟400 m以外的地下水位变化基本趋向稳定,但400 m以内水位在17.1～17.5 m之间波动.Based on the impounding process and the geological and the structural features of a plain reservoir, a saturated-unsatu- rated unsteady seepage model is established, and then the dynamic variation process of the level of the ground water in the foun- dation within the dam site area during the impoundment is simulated with 3D finite element method. The results show that the water level in the foundation with a distance of 400 m apart from the cut-off ditch basically tends to stable, but the water table fluctuates from 17. 1 m to 17. 5 m. within the area of 400 m to the ditch after 2 years of operation.

关 键 词：有限元法 饱和渗流 非饱和渗流 非稳定渗流 土坝 

分 类 号：TV641.2[水利工程—水利水电工程] P641.2[天文地球—地质矿产勘探]