高聚物防渗墙土石坝及其应力场与渗流场耦合分析

系统介绍了土石坝防渗加固工程中高聚物防渗墙的施工方法和步骤,在考虑实际工程条件基础上,建立坝体正常蓄水情况下高聚物防渗墙土石坝应力场与渗流场耦合分析的数值模型。高聚物防渗墙堤坝在考虑渗流-应力耦合作用时,坝体不同位置处的最大压应力的结果要大于不计耦合时的压应力值,且高聚物防渗墙竖向位移和水平位移值考虑耦合时明显大于不计耦合时,坝体内浸润线位置也有同样变化。分析结果说明忽略渗流与应力耦合作用会导致坝体和墙体的位移和应力计算结果偏小,为今后高聚物防渗墙除险加固工程的设计及施工提供理论依据。

Seepage Field and Stress Field Coupling Analysis of Dam with Polymer Anti-seepage Wall

This paper systematically introduces the construction methods and steps of polymer anti-seepage wall in the anti-seepage and reinforcement works of the earth-rock dam,considering the actual engineering conditions,establish the numerical model of the coupling analysis between the stress field and the seepage field about earth-rock dam with polymer anti-seepage wall under normal water storage.Considering the seepage-stress coupling,the data of the maximum compressive stress at different positions of the dam are larger than the compressive stress without seepage-stress coupling,and the vertical displacement and horizontal displacement of the polymer anti-seepage wall are also greater,and the body infiltration line position of dam also has the same change.The results show that ignoring the seepage-stress coupling can lead to smaller calculation results of displacement and stress of dam and wall,which can provide theoretical basis for design and construction of polymer anti-seepage wall reinforcement.