Numerical analysis of wall deformation of impervious material based on polyvinyl alcohol modification

Abstract

In order to study the deformation law of the impermeable slurry modified by polyvinyl alcohol in practical application, we adopted the method of simulation experiment combined with finite element analysis. The geological conditions of the project site were used as a reference to complete the pouring of the indoor model and the filling of the model soil, and the anti-seepage wall was modeled and analyzed by software. The research shows that the horizontal displacement of the wall gradually decreases from the top of the wall, there is no reverse displacement. And from the bottom of the wall, the proportion of displacement changes gradually and then tends to a certain constant. The overall displacement curve is basically consistent with the measured curve. The ultimate deformation ability of the polyvinyl alcohol modified slurry can meet the deformation requirements of the anti-seepage wall. The cut-off wall does not produce plastic deformation, has good deformation coordination, and can meet the deformation requirements of the surrounding soil.