Stability Analysis Of High Steep And Dangerous Rock Mass Based On UAV Oblique Photography Technology

Research on rock mass stability has always been one of the important research topics in the field of engineering geology,especially geological disasters.In recent years,with the construction of mountain projects,the stability of high and steep rock masses has begun to receive widespread attention.Fast and accurate acquisition of crack,joint surface and geometric information of dangerous rock mass is very important for stability analysis of dangerous rock mass.With the cross-fusion of technologies in various disciplines,intelligent equipment has been widely used in the geological survey industry with the advantages of high efficiency and high precision.The introduction of UAV oblique photography technology has brought new ideas to the survey industry,making geological surveys more convenient,efficient.The related research in this article is based on the UAV oblique photography technology,which mainly completes the following work:1.Based on the UAV oblique photography technology and image processing technology,a high-precision three-dimensional terrain model of the study area is constructed.On this basis,the method of manually obtaining the occurrence of dangerous rock structural plane and the geometric dimension of rock mass is summarized;2.Based on the study of the distribution,morphology,scale,and potential instability modes of the dangerous rock masses,the formation mechanism of the dangerous rock masses is analyzed,and the static stability analysis method is used to calculate the stability coefficients of the individual and the dangerous rock masses;3.In the study of the motion characteristics of a single dangerous rock mass,ROCFALL and PFC~3DD software are used to analyze and analyze the data of the motion path,bounce height,and kinetic energy of a single dangerous rock mass,respectively,as a regional dangerous rock mass.Prevention provides detailed and comprehensive data support;4.Aiming at the possibility of mass destruction of dangerous rock masses,PFC~3DD software was used to simulate the movement paths of mass destruction of 64 dangerous rock masses,providing intuitive and effective theoretical support for the prevention and control of regional hazardous rock masses;5.Based on the results of the above research calculations,a comprehensive treatment plan combining stone block wall+active protection net+anchoring+surface dangerous rock removal+crack(cavity)landfill+interception and drainage ditch is formulated.