卫生填埋场复合边坡地震稳定性和永久变形分析

采用非连续变形分析方法，对卫生填埋场复合型边坡的地震稳定性和永久变形进行了详细地计算分析，探讨了边坡倾角、土与土工膜之间的摩擦系数、边坡的长度、覆盖土层的厚度以及地震加速度对边坡的稳定性和永久变形的影响。由边坡的破坏形式，讨论了复合型边坡的破坏机理，指出了文献1]给出的计算公式的适用条件以及局限性，为卫生填埋场复合型衬垫层的稳定设计提供参考。

Seismic stability and permanent displacement analysis of a solid waste landfill slope containing geomembrane

Seismic stability and permanent displacement of cover soil in a solid-waste containment system are performed using the discontinuous deformation analysis (DDA). The effects of the inclination angle, the friction coefficient of the soil-geosynthetic interface, the length and thickness of cover soil and the earthquake strength on the stability and permanent displacement are discussed. The failure mechanism of cover soil in a solid-waste containment system is also discussed. Numerical simulations are done to testify and compare the two-part wedge theory proposed in literature 1]. Parametric study indicates the applicability of the two-part wedge theory. At the same time the seismic design suggestions are proposed.