title: Back-Analyses of Landfill Instability Induced by High Water Level: Case Study of Shenzhen Landfill.
abstract: In June 2008, the Shenzhen landfill slope failed. This case is used as an example to study the deformation characteristics and failure mode of a slope induced by high water levels. An integrated monitoring system, including water level gauges, electronic total stations, and inclinometers, was used to monitor the slope failure process. The field measurements suggest that the landfill landslide was caused by a deep slip along the weak interface of the composite liner system at the base of the landfill. The high water level is considered to be the main factor that caused this failure. To calculate the relative interface shear displacements in the geosynthetic multilayer liner system, a series of numerical direct shear tests were carried out. Based on the numerical results, the composite lining system simplified and the centrifuge modeling technique was used to quantitatively evaluate the effect of water levels on landfill instability.
authors.affiliation: Department of Civil Engineering, Beihang University, No.37 Xue-Yuan Road, Beijing 100191, China. pengfaren@163.com.
authors.forename: Ren
authors.initials: R
authors.lastname: Peng
authors.affiliation: Institute of Geotechnical Engineering, China Institute of Water Resources and Hydropower Research, No.20 Che-Gongzhuang West Road, Beijing 100048, China. houyj@iwhr.com.
authors.forename: Yujing
authors.initials: Y
authors.lastname: Hou
authors.affiliation: Institute of Geotechnical Engineering, MOE Key Laboratory of Soft Soils and Geo-environmental Engineering, Zhejiang University, No.866 Yu-Hangtang Road, Hangzhou 310058, China. zhanlt@zju.edu.cn.
authors.forename: Liangtong
authors.initials: L
authors.lastname: Zhan
authors.affiliation: Department of Civil Engineering, Beihang University, No.37 Xue-Yuan Road, Beijing 100191, China. ypyao@buaa.edu.cn.
authors.forename: Yangping
authors.initials: Y
authors.lastname: Yao
mesh_terms: D002681:China; D004784:Environmental Monitoring / Q000379:methods*; D055876:Landslides; D012037:Refuse Disposal / Q000379:methods*; D064091:Waste Disposal Facilities; D014867:Water / Q000009:adverse effects*; D014874:Water Pollutants, Chemical / Q000032:analysis
chemical_list: D014874:Water Pollutants, Chemical; D014867:Water
keywords: back analyses; high water level; landfill instability