Evaluation of tensile forces of geomembrane placed on waste landfill slope due to temperature variation and filling height

Based on interface friction characteristics between geosynthetics installed on the side slope as liner system in the waste landfill,methods for evaluating tensile forces of geomembrane due to temperature variation and filling height,are proposed.A liner system composed of HDPE geomembrane and non-woven geotextile,the tests of tensile forces of geomembrane were conducted at the various filling height of soil.The results show that the tensile force creating at the shoulder of HDPE geomembrane is mainly temperature stress when the filling height of soil is low.When the difference in temperature becomes larger the tensile force increases.With increasing height of soil,the tensile force of HDPE geomembrane increases.The tensile forces creating at the shoulder of HDPE geomembrane due to temperature and filling height are analyzed by proposed methods.A comparison shows that the calculation results fairly close to the experiment values.Especially,when the calculation considering the interface friction force,the calculated tensile force of geomembrane has higher precision.