Currently, seams of PE membrane are fused and seams of non-woven geo-fabric are sewed for joining of membrane
and non-woven geo-fabrics. The test results indicate that tensile failure strength of the bonded seams is only 20 %耀40%of the tensile strength of parentmaterials. On the basis ofa series ofexperimentalstudy，a newmethod is proposed for strengthening the seams of geomembrane and geo-fabrics. With the new method, KS hot melt adhesive is used for binding seams of PE membrane and non-woven geofabric and seams of non-woven geofabric following welding of PE membrane. Being strengthened with KS hot melt adhesive the tensile failure strength of the bonded seams could be similar to the tensile strength of parent materials, which satisfies technical requirement that tensile strength of seams should not be lower than 80 % of the tensile strength of parent materials as specified in Standard for Application of Geosynthetics in Hydraulic and Hydro-power Engineering.