| Baoji is located in the loess area, the loess landslide is the main geological disaster in this area. After the rainy season, the loess landslide disasters occur frequently in this area, which is a serious threat to the life and property safety of the local residents.In this paper, the research of in Zhongyanshan landslide is prevailing in the region development and its typical representative of a class of landslide, the stratum structure in general for the Loess covering on top of the red clay. Therefore, the study of the loess landslide formation mechanism and stability of disaster prevention in the future work of the local has reference significance.In this paper, with Zhongyanshan landslide based on the experimental and numerical simulation combining means to analyze and study the formation mechanism and stability of Zhongyanshan landslide in Baoji.Through the analysis of the data mining and numerical simulation results of three axes, some conclusions are obtained and the main results are as follows:1、The sliding of the landslide occurred under the combined action of rainfall and static liquefaction.Rainfall infiltration leads to the increase of underground water level,and high pore pressure, effective stress decreased, along the Loess and red clay boundaries partial liquefaction, this is the reason why the Zhongyanshan landslide has each year continues to slowly creep slip.2、In order to study the static liquefaction of saturated loess, this paper analyses the data of three axis experiment, and gets the criterion of static liquefaction of loess in this region.At the same time, the numerical simulation results under different conditions are compared with those obtained by the liquefaction criterion, and the liquefaction of different conditions is analyzed.3 、 Simulation results show that the stability coefficient of the slope decreases gradually with the increase of groundwater level. And when the underground water level rise to 1m, the slope is in critical state. |
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