Characteristic Analysis and Kinematic Simulation of Dangerous Rockfall Based on UAV and Rocfall—Taking the Exit of the Yuanbaoshan Tunnel as an Example
Lixiang Railway is located in the northwest of Yunnan Province,features mountains and steep terrain along the line,staggered distribution of mountains,canyons,plateaus and basins,complex geological structures,strong neotectonic movements,and dangerous rockfalls.Taking the exit of the Yuanbaoshan Tunnel of the Lijiang-Shangri-La Line as the research object,with the help of the image data obtained from the on-site geological survey of dangerous rocks and UAV aerial survey,and the Rocfall software to simulate the trajectory,the potential dangerous rock mass is analyzed and evaluated,and the geological hazard investigation of the dangerous rock mass has been well completed.The results show that this method can accurately identify the geometric characteristics,spatial location and instability mode of dangerous rock mass,realize the rapid identification of dangerous rock,and obtain information such as rockfall energy,bounce height and influence range of dangerous rock mass,so as to analyze and evaluate the development characteristics and danger of potential dangerous rock mass,and put forward effective prevention and control measures.The conclusions of this study can provide a certain reference for the disaster management and prevention design of dangerous rockfalls.
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