基于无人机融合建模的危岩运动模拟及影响区划分  

Simulation of dangerous rock mass movement and delineation of impacted zone based on UAV fusion modeling

作　　者：刘兵兵 吴福 刘昶 何娜 黄海 LIU Binging;WU Fu;LIU Chang;HE Na;HUANG Hai(State Key Laboratory of Geological Disaster Prevention and Environmental Protection,Chengdu University of Technology,Chengdu 610059,China;Geological Environment Monitoring Station of Guangxi Zhuang Autonomous Region,Nanning 530201,China)

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]广西壮族自治区地质环境监测站

出　　处：《人民长江》2024年第7期138-144,159,共8页Yangtze River

基　　金：国家自然科学基金项目(42072306)。

摘　　要：危岩坠落受多种因素影响,具有不确定性,研究危岩的潜在受灾区域并区分不同影响程度能够为灾害防治提供数据支撑。以广西南宁市内庄屯危岩为例,基于倾斜与贴近摄影融合建模技术构建三维模型,精准获取岩体结构信息及危岩体特征信息;并通过三维数值模拟对危岩的运动路径、运动过程、实时动能及弹跳高度进行研究,根据多次模拟结果提出了将潜在受灾区域进行影响区划分的方法。研究表明:融合建模有效提高了陡立山体细节特征的可视性,更利于危岩运动模拟参数的精确提取;基于多次模拟结果分析,可以确定潜在受灾区域;影响区划分方法能够进一步将潜在受灾区进行简易、快速的区域划分。研究结果对高陡危岩体的调查具有参考意义。Rock falls are influenced by a variety of factors and inherent uncertainties.Investigating potential disaster zones and distinguishing varying degrees of impact can provide critical data for disaster prevention and control.This study focused on the dangerous rock masses in Neizhuangtun,Nanning City,Guangxi.A 3-dimensional model was constructed using a fusion of oblique photography and nap-of-the-object photogrammetry modeling technology to accurately capture the structural and characteristic information of the rock mass.Through 3D numerical simulation,the movement path,process,real-time kinetic energy,and bouncing height of the dangerous rock masses were analyzed.Based on the simulation results,a method of dividing the potentially impacted areas was proposed.The findings indicated that the fusion modeling technique significantly enhanced the visibility of detailed features in steep mountainous regions,facilitating the accurate extraction of simulation parameters for rock movement.By analyzing multiple simulation results,the potential disaster risk zones were identified.The proposed method for dividing the affected areas enables a quick and easy division of potential disaster zones.The outcomes of this study provide insights for the investigation of high and steep dangerous rock masses.

关 键 词：高位危岩 融合建模 倾斜摄影 贴近摄影 数值模拟 落石分区 

分 类 号：P231[天文地球—摄影测量与遥感] P642.2[天文地球—测绘科学与技术]