DEFORMATIONMECHANISM OF HIGH LOESS EMBANKMENT SLOPE

This paper relies on geotechn ical engineering investigat ion of high loess embankment slope in the oilfield site northw estern of China. It is based on the analysis o f eng ineering geo log ical cond itions and deformation character istics. It stud ies the slope deform ation and failuremechan ism. A three- dimension geo log icalmodel is es tablished to analyze the distribution of stress and stra in of the loess f ill slope. The FLAC3D so ftw are is used to simu late the deform ationm echan ism o f the slope. The numerica l resu lt ind icates that them ain transform and fa il zone beg in from abrupt hole surroundings and follow s face o f slope to get dow n a 20- 25 meter. The bottom interface is the surface o f contact betw een theHo loceneE poch f ill earth storey Q4 and the orig ina l loessQ3. The numerica l re su lt further ind icates that the slope has adequate stab ility aga inst landslide. Any large deformation and fa ilure o f the slope is found to be impossib le.