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《Chinese Journal of Rock Mechanics and Engineering》 2007-S2
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THREE-PART WEDGE METHOD FOR TRANSLATIONAL SLIDING ANALYSES OF LANDFILLS RETAINED BY A TOE DAM

GAO Deng,ZHU Bin,CHEN Yunmin (Institute of Geotechnical Engineering,Zhejiang University,Hangzhou,Zhejiang 310027,China)  
The three-part wedge method for translational failure analyses of landfills retained by a toe dam was presented;and the approximate solution of the factor of safety was also given. With this approximate solution,analyses of the stability of new and expanded landfills along the back and bottom linings can be considerably simplified. Thus it is an acceptable method for the engineering application. Computed results by the proposed method are in good agreement with those by the Spencer′s method. Moreover,it can take into account the effect of the internal friction angle of the waste on the factor of safety. Parametric studies show that the interface strength of the lining determines the stability of the landfill along the lining. The angles of slopes,the height and width of the landfills and the height of the toe dam also greatly influence the sliding of the landfill along the lining. For the expanded landfill,more attentions should be paid to the failure along the intermediate lining between the existing and expansion wastes. Additionally,the wider the landfill expands horizontally,the better the stability along the intermediate lining is.
【Fund】: 国家自然科学基金重点项目(50538080);; 国家杰出青年科学基金资助项目(50425825)
【CateGory Index】: TU43
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