EXPERIMENTAL STUDIES OF ARCHING EFFECT AND GEOSYNTHETIC DEFORMATION IN LOCAL SUBSIDENCE PROBLEM
For vertical landfill expansion, high-strength geosynthetic reinforcement is being applied to minimize the deformation of a composited liner system caused by local subsidence in the existing landfill. In this study, a small-scale test device was developed to model the local subsidence problem. A kind of PVC geomembrane (GM) was used to simulate the geosynthetic reinforcement in the composite liner system. A total of six tests were conducted to evaluate the effect of filling height and GM stiffness on the soil arching and the GM deformations. The test results shown that the filling height and GM stiffness have little influence on the final pressure acted on the deflected GM. The GM stiffness can heavily influence its deformation in a certain range, while the influence decreases with the increase of the GM stiffness. Finally, the tests results were compared with those calculated by the current design method.
landfill composite liner system geomembrane arching effect strain
Deng GAO Bin ZHU Yun-Min CHEN Tony L.T.ZHAN Xiang-Zhi WANG
Department of Civil Engineering, Zhejiang University, China Suzhou Bureau of Urban Environment and Sanitary, China
国际会议
International Symposium on Geoenvironmental Engineering(国际环境岩土工程研讨会
杭州
英文
840-845
2009-09-08（万方平台首次上网日期，不代表论文的发表时间）