Analysis Of Stability In Loess Substrate Loading Dump

In this paper, the base dump slope loess possible failure modes, landslide type, analysis of the loess base Dump deformation and failure of internal and external factors, that the loading process of the loess layer of plastic instability leading to the base of loess Dump undermine the dominant factor. The base of a pit to dump slope of loess, for example, the use of numerical finite element software to simulate the loading process of loess in the soft basal layer of the play slip laws, and the loading process dump slope stability. The results showed that:Loess bases loaded in the process, with the row dump height increases, there has been a large area of the plastic strain, and concentrated in soft plastic with soil; When the row height increased to a value of spoil, the plastic zone increases rapidly, the maximum plastic strain values increase rapidly, which means that the soft plastic with soil over the dump row of the upper bearing, the actual load exceeds the strength of its ultimate strength, there has been overload and makes its own strength drastically reduced, and thus a large area of plastic deformation;Evolution of the formation of weak layers provided for the sliding body of low shear strength of a continuous belt, the lower the ability of the passive stabilizing balance; Way through the second backfill to prevent plastic deformation value increases too fast, and makes the soil soft plastic with the generation of early overload, which is more suitable for dump planning;Through the strength reduction in the slip-line position of the loading process simulation can be seen that the end of the slip-line slope has a soft plastic zone in the soil, combined with the analysis of overload, indicating that as the row continues to spoil backfill, the first in the soft plastic with soil damage occurred, and eventually form a circular-shaped slip lines.