中文摘要：

为考虑填埋场中同一坡面极限破坏面转移效应对填埋场平移破坏的稳定性影响，提出了四楔体模型，给出了填埋场安全系数的近似解。分析研究表明：提出的四楔体法与精度较高的spencer法计算结果吻合良好，最大相对误差小于0．79％：填埋场稳定安全系数随填埋宽度增大而增大，随填埋高度的增大而减小；若忽略极限破坏面转移效应，双楔体法计算结果是偏大的；此外，对已有的基于双楔体法的填埋次序设计进行了改进，提出了新的填埋次序设计，方法具有一定的工程意义。

英文摘要：

In order to calculate the factor of safety for translational failure of landfill considering the shift effect of the critical interface in liner system, a model of four-part wedge is proposed, and approximatd solutions for the factor of safety are given. Computed results by the proposed method are in good agreement with those by the Spen- cer＇ s method, and the maximum relative error between them is less than 0. 79%. The factors of safety increase with the increasing of top width of waste mass and decrease with the increasing of height hack slope. It is also found that the factor of safety of two-part wedge would be larger, if the shift effect of the critical interface is ignored. Moreover, a new waste filling procedure that can improve existing the method proposed in this paper has certain engineeri filling procedure based on two-part wedge is put forward, so ng significance.