高陡边坡危岩体运动学参数与防治措施研究

Research on Prevention Parameters and Prevention Measures of Dangerous Rock Mass in High and Steep Slopes

进行危岩体崩塌灾害防治时,对危岩体进行精准辨识并有效还原危岩体滚落时的真实情况是重难点。以昆明市山邑村危岩体为例,采用现场调查、无人机三维倾斜摄影测量技术及三维激光扫描技术,对高陡边坡危岩体进行数据提取,采用RAMMS ROCKFALL软件模拟危岩体滚落时的运动情况,获取危岩体滚落过程中的运动路径及运动学参数。研究结果表明,通过现场调查、无人机三维倾斜摄影测量技术及三维激光扫描技术等先进手段相结合的方法,可对危岩体进行较准确、全面的辨识与分析;可利用RAMMS ROCKFALL软件进行模拟分析,以较真实地反映危岩体滚落时的运动情况,获取落石运动路径、速度、对下方建筑物的冲击等运动学参数,可为防治工程构件布置和设计计算提供参考。

Accurate identification of dangerous rock masses and effective restoration of their actual rolling conditions during collapse are crucial difficulties in preventing and controlling collapse disasters.Taking the dangerous rock masses in Shanyi Village,Kunming City as an example,this paper employed field investigations,unmanned aerial vehicle(UAV)three-dimensional(3D)oblique photogrammetry and 3D laser scanning technology to extract data from the high and steep slope dangerous rock masses.The RAMMS ROCKFALL software was then used to simulate the movement of the rolling dangerous rock masses,enabling the acquisition of their kinematic paths and parameters during the rolling process.The research results show that a combination of advanced methods,including field investigations,UAV 3D oblique photogrammetry and 3D laser scanning technology,can provide accurate and comprehensive identification and analysis of dangerous rock masses.Furthermore,the RAMMS ROCKFALL software can be utilized for simulation analysis to realistically reflect the movement of rolling dangerous rock masses,allowing for the acquisition of kinematic parameters such as the rolling path,velocity and impact on underlying structures.This information can serve as a valuable reference for the layout and design calculations of prevention and control projects.