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三峡工程一期土石围堰是前期工程的关键单项工程，在围堰运行期，对围堰堰体、柔性防渗心墙及渗流渗压状态进行监测和分析，掌握围堰运行全过程的工作性态，以确保围堰本身的安全以及三峡右岸一期工程的安全顺利进行。分析表明：围堰堰体的工作性态基本正常，变形在空间上协调；柔性防渗墙防渗效果明显，应力状态安全稳定；除局部地段渗流量较大外，渗流状态基本正常。目前围堰是稳定安全的。
The first phase of the Three Gorges Project is a key single project of the preliminary project. During the period of cofferdam, the weir body, flexible impervious core wall and seepage seepage pressure of cofferdam are monitored and analyzed to grasp the whole cofferdam operation In order to ensure the safety of the cofferdam itself and the safety of the first phase project of the Three Gorges right bank. The analysis shows that the working state of cofferdam body is basically normal and the deformation is spatially coordinated. The anti-seepage effect of the flexible seepage-proof wall is obvious and the stress state is safe and stable. The seepage state is basically normal except for the large seepage flow in some sections. Cofferdam is currently stable and safe.