以锦州某地下水封洞库工程为例，对研究区的水文地质条件、洞库结构和人工水幕系统进行了概化，建立了地下水封洞库在无水幕、有水平水幕、有水平水幕和垂直水幕3种条件下的三维地下水渗流数值模拟模型，模拟了地下洞库周围的地下水渗流场；利用建立的地下水渗流数值模型预测了3种条件下洞库周围地下水等水位线扩展情况及洞库上方地下水位变化情况等，并对结果进行了对比分析。由分析结果可知，有水平水幕和垂直水幕条件下的地下水等水位线扩展范围和速度比其他2种条件小，因此人工水幕系统在保证地下水封洞库工程有效性和储油安全性以及保护洞库周围地下水环境等方面起到了重要作用。

This paper presents a groundwater seepage model around the underground water sealed oil-storage cavern. According to hydrogeologic conditions and the structure of underground petroleum storage caverns and artificial water curtain systems, 3D numerical seepage simulation models are created respectively to simulate the groundwater flow nearby the caverns in three conditions： without water curtain system, with horizontal water curtain system, and with horizontal and vertical water curtain systems. In these three conditions, the extensions of the groundwater level contour are predicted and the variations of the groundwater level above the cavers are compared using the models. By the analysis of the comparison results, it shows that the extending range and rates of the groundwater level contour of the model with horizontal and vertical water curtain systems are less than other two kinds of conditions. So the artificial water curtain system plays an important role to assure the efficiency of the project and the safety of oil storage and also protect the groundwater environment.