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主要介绍了三峡工程二期上游围堰在基坑抽水阶段堰体和防渗墙的应力应变分析研究的成果。研究成果表明 ,围堰在基坑抽水阶段 ,墙体变形规律正常 ,并且与现场实测值较接近 ;在设计正常蓄水位高程 85 .0 m下 ,上游墙的最大变位将达到 67.4cm,墙体应力在墙体实测强度范围之内 ,墙体应力水平小于 1.0 ,表明墙体和堰体是稳定、安全的
This paper mainly introduces the stress and strain analysis of the cofferdam and cutoff wall of the upstream cofferdam of the Second Stage of the Three Gorges Project in the pumping stage of the pit. The research results show that the cofferdam deformation is normal during the stage of pumped well excavation, and the deformation of the wall is normal and close to the measured value in the field. Under the normal design elevation of 85.0 m, the maximum displacement of the upstream wall will reach 67.4 cm, Wall stress within the measured strength of the wall, the wall stress level is less than 1.0, indicating that the wall and the weir body is stable and safe