水位骤降时土质边坡的渗流特征演化研究

Study on Evolution of Seepage Characteristics of Soil Slope under Water Level Plummets

库岸边坡的稳定性对于当地水文环境的影响显著,文章依据湖泊岸坡水位经常发生骤升骤降的实际情况,采用数值模拟软件对水位骤降前后,边坡的渗流特征进行分析。结果表明:水位骤降前后边坡内的水压和压力水头随边坡体深度增大而增大;水位变化前后的水力传导度和体积含水率随土体水压的增大而增大,水在土体中渗流作用明显。可见,水位骤降前后边坡能够保持稳定。结果可为类似边坡工程在水位波动条件下的渗流特征分析提供借鉴。

The stability of the bank slope of the reservoir has a significant impact on the local hydrological environment.According to the actual situation that the lake bank slope water level often occurs sudden rise and fall,the seepage characteristics of the slope before and after the water level drops are analyzed by using numerical simulation software.The results show that the water pressure and pressure head in the slope increase with the slope depth increasing before and after the water level plummets.,The hydraulic conductivity and volumetric water content increase with the increase of soil water pressure before and after the change of water level.The seepage effect of water in soil is obvious.It can be seen that the slope can keep stable before and after the water level plummets.The results can be used for reference to analyze the seepage characteristics of similar slope engineering under the condition of water level fluctuation.