Dynamic Response of Composite Geomembrane Seepage Control Solutions for a Reservoir
WANG Rui
SHI Gaofeng
ZHANG Xiong
FENG Xianwei
Abstract：Due to its strong adaptability to deformation and excellent impermeability,geomembrane is widely utilized in reservoir seepage prevention projects.As a primary seepage control structure,its seismic safety directly impacts the operational stability of the dam.Focusing on the TPO-HDPE composite geomembrane seepage prevention scheme for a pumped storage power station′s entire reservoir basin,finite element dynamic calculations were conducted to analyze the acceleration and stress-deformation response characteristics of both the dam body and geomembrane when subjected to design-level seismic events.Results indicated that under design earthquake conditions,the acceleration and displacement responses of both the dam and geomembrane conformed to general patterns.The stress distribution within the dam met regulatory requirements,while both stress and strain in the geomembrane remained below yield levels.Consequently,it was concluded that the seismic safety stability of the geomembrane satisfied design specifications,validating its feasibility for surface seepage prevention applications in pumped storage power station reservoirs.
Keywords：composite geomembranepumped storage power stationnonlinear finite elementtime-history methodstress deformation
Publication Date：2026-02-20
Online Publishing Date：2026-03-27(First online date of this platform, not the publication date of the document)
Pages：8( 69-76 )