河堤水位变化对堤岸的渗流影响

The Influence of River Embankment Water Level Change on the Seepage of Embankment

探究河堤水位变化对堤岸渗流的影响对于确保河堤长期稳定安全运行、维护水资源的可持续利用和生态环境的健康发展至关重要。依托某河堤工程项目,采用数值模拟方法探究河堤水位升降对堤岸边坡坡体内部渗流场及孔隙水压力变化的影响,分析不同水位上升及下降速率对坡体内部各监测点渗流速度的影响。结果表明,水位升高,土体孔隙水压力增大,坡体内部浸润线高度增加,但滞后于水位高度,水位降低,土体孔隙水压力减小,浸润线高度降低,与坡面距离越近水力坡降越大。

Exploring the influence of embankment water level change on embankment seepage is very important to ensure the long-term stable and safe operation of embankment,maintain the sustainable utilization of water resources and the healthy development of ecological environment.Based on a river embankment project,the numerical simulation method was used to explore the influence of the water level rise and fall of the river embankment on the internal seepage field and pore water pressure change of the embankment slope,and the influence of different water level rise and fall rates on the seepage velocity of each monitoring point inside the slope was analyzed.The results show that when the water level increases,the pore water pressure of the soil increases,and the height of the infiltration line inside the slope increases,but lags behind the height of the water level.When the water level decreases,the pore water pressure of the soil decreases,the height of the infiltration line decreases,and the closer the distance from the slope surface,the greater the hydraulic gradient.