| Chencang area is located in the Qinling Mountains,Guanzhong Plain,the Loess Plateau transition area,complex geological conditions,large terrain differences,in a number of fault zones,the long tectonic movement under the strong role of a large number of landslides,landslides,debris flow and other types of natural Disaster,a serious threat to the local people's property and life.Therefore,the study of the formation mechanism of various geological disasters under different geological environment conditions can provide reliable theory for disaster prevention and disaster prevention and project management in economic construction of Chencang district,which has important theory and significance for promoting the coordinated development of geological environment and social economy.Based on the detailed geological investigation of the geological disasters,this paper takes the main geological disasters in Chencang area as the research object,and analyzes the disaster formation mechanism and the dustpany landslide in the area from the geological conditions of the disaster.Firstly,based on the analysis of the geological environment conditions in the Cangcang area,the types of geological disasters were identified,and the development characteristics,hazard characteristics and distribution laws of the disasters were analyzed and analyzed.Secondly,the geological disasters were formed with topography,geological structure,The relationship between the rainfall,the earthquake and the vegetation,the static and dynamic aspects of the formation and impact of geological disasters to explore;Finally,the dustpan Zhuang landslide,for example,according to its basic characteristics,analysis of its formation mechanism,put forward According to the field exploration and combined with the indoor physical mechanics index,the FLAC3 D software is used to analyze the stability and numerical simulation of the landslide by using the transfer coefficient method and the finite difference method respectively.According to the research and analysis of the survey data,it is found that the geological disasters in the study area are dominated by soil landslides,which are flaky and banded in the area.They have the characteristics of sudden,mass and chain nature,which are mainly affected by rainfall.The results show that the landslide is in a steady state under natural and saturated conditions and is in a state of failure under the action of rainfall and earthquakes,which is basically the same as that of rock and soil.The results show that rainfall is the main dynamic factor in the formation of geological disasters in the region.FLAC3 D software can reflect the present situation of landslide and analyze the future development trend in landslide stability evaluation.Therefore,it is of great significance to strengthen the regional rainfall monitoring and use FLAC3 D simulation software to evaluate and control the geological disasters in Chencang area. |
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