Abstract：The forces at the shoulder of geomembrane placed on the side slope as liner system in landfill are mainly temperature stress and tensile force due to waste compaction. In order to evaluate the temperature stress and tensile forces of high density polyethylene(HDPE) geomembrane in the liner system，which is composed of HDPE geomembrane and non-woven geotextile，the large-scale tests were conducted. The results show that the temperature stress within the HDPE geomembrane occurs with decrease of circumstantial temperature；the tensile force at the shoulder of HDPE geomembrane is mainly temperature stress when the height of soil is low；the tensile force of HDPE geomembrane by compaction work increases with the increase of height of soil. The tensile forces of HDPE geomembrane due to waste compaction are analyzed by finite element method；and the temperature stresses are analyzed by the relationship between temperature and the stress，the comparison shows that the calculation results considering stress relaxation of tensile force are closer to the test values.
