Including Geomembrane Laminated Slopes Seismic Stability Studies

With the development of social economy and the acceleration of urbanization, many countries including China have to face the environmental problems, hygienical filling is one of the popular methods to dispose the solid-waste, and so too much importance has been attached to seismic stability research of solid-waste containment slope. A solid-waste containment system can be simplified as a slope which contains a layer of geomembrane (which is simplified as interlayer slope in the rest part). Shaking table model test and numerical analysis have been done to study the seismic stability of interlayer slope based on the two-part wedge theory in this paper. Many factors which affect the slope stability ratio, including horizontal seismic coefficient, slope angle, soil-geomembrane interaction coefficient, slope length, layer thickness and soil character, have been took into consideration. Primary studies also have been done on permanent displacement of interlayer slope under seismic loading. The thesis encompasses three parts: The first one introduces interlayer slope failure theory, the second one deals with the design of model test and analysis of the test data, the last part analyze the interlayer slope affect factors.Chapter one and two which introduce two-part wedge theory put forward by Hoe I Ling are included in part one, and regarded as the theory foundation of model test.The second part including chapter three and four states the details of model test such as the equipments, procedures, test data analysis and so on, and the conclusions draw from the test.The following two chapters make of the third part. Chapter five analyses the failure factors of test model and identifies the valid scope of two-part wedge theory. Chapter six extends the valid scope of two-part wedge theory, and puts forward integer slide theory, then uses the extended theory calculating a concrete project, seismic design suggestions are proposed finally.