渗流反演分析在某水电工程中的应用

Application of seepage back analysis to a hydropower engineering

渗流参数的确定是水电工程设计中的关键步骤,将反演分析法与野外测试法相结合是获取渗流场整体特性及确定渗流参数的必要措施.针对水电工程实例,结合实际观测资料,建立了较为符合实际的水文地质模型,反演了各分区材料的渗透系数.将反演所得参数用于三维渗流有限元分析,取得了良好的计算结果,对渗流数值计算在水电工程中的应用有重要的借鉴意义.

Determination of seepage parameters is a key process in the design of hydropower engineering.Combining the back analysis with field tests is a necessary measure to obtain the whole flow field characteristics and seepage parameters.In view of an actual hydropower engineering,a hydrogeological model is established based on the data measured in field;and the permeability coefficient of each subfield is obtained by back analysis.With the help of the parameters given by seepage back analysis,a satisfied result is obtained in the three-dimensional finite element calculation.The result has a significant reference for the application of numerical calculation of seepage field to hydropower engineering.