In order to carry out the stress and strain analysis of the impermeable geomembrane in the whole reservoir and ensure the safety and stable operation of the reservoir,FLAC3D commercial software was utilized to construct a three-dimensional finite element model and simulate the stress and deformation characteristics of the geomembrane.The stress and deformation of the geomembrane within the dam body,as well as the stress and strain analysis of the concrete face slab,are conducted separately.Additionally,simulations and analyses are performed on both the geomembrane within the reservoir and the entire reservoir itself.The results indicate that the extreme stress and strain values of the entire reservoir anti-seepage system,both during construction and full storage operation period,are within reasonable and controllable limits.The structural forces remain balanced and stable,ensuring the anti-seepage safety of the reservoir.
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