| my country is a country with a large area of mountains,hills,and plateaus.Its special geological structural conditions and hydrological and meteorological conditions cause frequent disasters.Among these disasters,landslides are one of the most common disasters.Due to its special geographical location and climatic conditions,high-altitude areas make landslide monitoring and stability analysis particularly difficult.However,the establishment of important traffic routes and the increase in people’s safety requirements for production and life give rise to landslide stability analysis and monitoring in high-altitude areas.Higher requirements are put forward,and the development of three-dimensional UAV modeling and landslide stability evaluation will be an important research direction for high-altitude landslide prevention.Throughout the distribution of disasters in high-altitude areas,geological disasters such as landslides,mudslides and glacial lake outbursts in southeastern Tibet are particularly serious.These disasters have had a huge impact on local traffic and the lives of villagers.Therefore,those article first summarized the technical route of UAV 3D modeling and specific data collection steps.Three different modeling softwares are used to perform 3D slope modeling based on UAV data,and the best model is selected.Perform stability analysed.After that,Auto CAD and Global Mapper software were used to intercept the slopes in multiple sections,combined with the two months of rainy and dry seasons,the soil sampling results of Tianmogou were numerically simulated and analyzed on the slopes through Geo Studio software.The inspection situation and the data collection situation of the on-site monitoring equipment were compared and analyzed.The following conclusions can be drawn:(1)It is feasible to combine the three-dimensional modeling of the UAV with the limit equilibrium method,and to study and describe the stability of the slope.(2)Three different limit equilibrium analysis methods are used to analyze multiple sections of the slope,and the overall analysis results are not much different.(3)Comparing the calculation results with on-site field investigations,it can be seen that on the side close to the mud-rock flow accumulation mountain,the slope is generally in a stable state due to the better vegetation coverage rate,but in the area in the middle of the slope where the vegetation coverage is less,Under the continuous influence of rainfall,earthquakes and human engineering activities in the area,unstable landslides may occur.(4)Finally,the calculation results are first compared with the analysis results of the site conditions,and then the comparison results are compared with the Tianmogou slope monitor data results for the final analysis.It can be seen that the slope monitoring has a displacement from July to October.,But basically are between 20-40 mm,it can be seen that the calculation results are more consistent with the actual situation. |
