摘要
针对高陡岩质斜坡崩塌坠落给周边工程及居民造成危害的实际情况,提出采用无人机仿地倾斜摄影测量方式获取斜坡三维实景模型,并基于低分辨率模型规划贴近飞行测量路线,通过多角度获取坡面详细数据,构建精细化的岩坡三维模型。测量精细化模型中斜坡块体的关键几何参数,通过实景三维模型的块体特征和结构面受力情况,分析块体稳定性及潜在危险性。试验结果表明,研究区域在自然状态下共有107块为稳定块体,98块为失稳风险块体,27块为关键块体。但在地震特殊状态下,岩体的安全系数降低,有17个稳定块体可能发生失稳现象,变为关键块体。
In response to the hazards caused by the collapse and falling of high steep rock slopes to surrounding engineering and residents,it is proposed to use unmanned aerial vehicle(UAV)terrain-following oblique photogrammetry to obtain a three-dimensional realistic model of the slope.Based on the low resolution model,a close-range flight measurement route is planned,and detailed data of the slope surface is obtained from multiple angles to construct a refined three-dimensional model of the rock slope.By measuring the key geometric parameters of the slope block in the refined model,we analyze the stability and potential hazards of the block through the block characteristics and structural plane stress of the realistic 3D model.The experimental results indicate that there are a total of 107 stable blocks,98 unstable risk blocks,and 27 critical blocks in the study area under natural conditions.However,under special earthquake conditions,the safety factor of the rock mass decreases,and 17 stable blocks may become unstable and become critical blocks.
作者
陈丹
CHEN Dan(Heyuan Geological Environment Monitoring Station,Heyuan 517000,China)
出处
《测绘与空间地理信息》
2025年第10期168-171,共4页
Geomatics & Spatial Information Technology
关键词
倾斜摄影测量
高精度
高岩陡坡
稳定性
oblique photogrammetry
high-accuracy
high rock steep slopes
stability
