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从渗流和边坡稳定的角度出发,论述了土坝加固工程中防渗体形式和尺寸选择的条件和要求,结合工程实例给出了土坝加固工程中不同防渗体形式(厚度、位置)对坝体渗流和稳定的影响数值计算结果和规律,特别介绍了土坝防渗体形式对土坝边坡逸出坡降、边坡稳定性的影响.计算结果表明:不论是考虑稳定渗流还是非稳定渗流,土坝防渗墙位置越靠近上游坝坡,防渗效果越好;防渗墙设置越厚,防渗效果越好.以期本结论对于工程设计提供一定的借鉴和参考.
From the view of seepage and slope stability, the conditions and requirements for the selection of form and size of impermeable body for earth-dam consolidation are discussed. According to engineering examples, the different forms of impervious body (thickness and position) The numerical results and regularity of the seepage and stability of the dam are presented in detail, especially the effects of the seepage control body of earth dam on the slope escape and slope stability of the earth dam, and the calculation results show that whether considering steady seepage or The results show that the more the seepage prevention wall is set, the better the anti-seepage effect is, the better the seepage prevention effect is.With this conclusion, we can provide some reference and reference for engineering design.