根据西霞院反调节水库电站厂房坝段工程的地质情况，该段工程的地基处理采用水平放置的“［”形混凝土防渗墙防渗。为了解厂房坝段地下水运动规律、渗流控制措施作用，对电站厂房坝段进行了三维渗流计算分析，结果认为：电站厂房段渗流控制措施的选择和布置，从整体上看比较合理；从扬压力等值线分布图来看，海漫段底板所承受的渗透压力较大。因此建议，对于海漫的砼底板厚度进行渐变加厚处理，亦即海漫段上游端至下游端，底板厚度由1.0m 渐变至0.60m ，从而确保电站厂房坝段的安全运行。

The Xixia Institute Anti-regulation Reservoir is a coordinated project of Yellow River Xiaolangdi Water Resources Project. According to the project geological situation of powerhouse dam section of the reservoir, this section project foundation treatment uses horizontal middle-brackets-like “［” shape concrete cut-off wall as anti seepage. For understanding the motion law of underground water and the control effect of seepage-proof measures, three dimensional seepage calculation analysis for the power plant workshop dam section is conducted. The analytic result shows as follows：The selection and arrangement of seepage control measures in the powerhouse dam section are reasonable overall. The bottom plate at the apron section withstands a rather great pressure, seen from the contour-line distribution diagram of uplifts. Therefore, it is suggested that the thickness of concrete bottom plate of the apron should be taken a gradual thickness from 1.0-0.6 meter to ensure the powerhouse dam section safe operation.