基于无人机遥感快速建模的危岩体三维离散元计算方法  

A three-dimensional discrete element calculation method ofdangerous rock using UAV remote sensing for fast modeling

作　　者：苏国韶[1,2] 李战 范秋雁[1,2] 郑志 SU Guoshao;LI Zhan;FAN Qiuyan;ZHENG Zhi(School of Civil Engineering and Architecture,Guangxi University,Nanning 530004,China;Key Laboratory of Disaster Prevention and Structural Safety of Ministry of Education,Nanning 530004,China)

机构地区：[1]广西大学土木建筑工程学院,广西南宁530004 [2]工程防灾与结构安全教育部重点实验室,广西南宁530004

出　　处：《广西大学学报（自然科学版）》2023年第3期641-650,共10页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(52169021);广西研究生教育创新计划项目(YCBZ2018023)。

摘　　要：针对高位危岩体人工勘测效率低以及无人机遥感所采集的点云数据无法直接用于离散元计算建模的问题,本文提出一种基于无人机遥感快速建模的危岩体三维离散元计算方法。该方法采用无人机遥感技术生成危岩体的三维点云数据,通过下采样、平滑处理与所提出的双重空间距离判别法点云进行数据降噪,生成适用于三维离散元计算的网格模型,进而可对危岩体进行崩塌过程模拟。研究结果表明,本文方法是可行的,能够实现危岩体的快速勘测、快速建模与快速分析。In order to solve the problems of low artificial survey efficiency of high dangerous rock mass and point cloud data collected by UAV remote sensing cannot be directly used for modeling and discrete element calculation,this paper proposes a three-dimensional discrete element calculation method for dangerous rock mass using UAV remote sensing for fast modeling.In this method,the UAV remote sensing technology is used to generate 3D point cloud data of dangerous rock mass,and the point cloud data is denoised by downsampling,smoothing and the proposed dual spatial distance discrimination method to generate a mesh model suitable for 3D discrete element calculation,and then the collapse process of dangerous rock mass can be simulated.The research results show that the proposed method is feasible and can realize the rapid survey,modeling and analysis of dangerous rock.

关 键 词：危岩 无人机 遥感 离散元 

分 类 号：P237[天文地球—摄影测量与遥感] TU457[天文地球—测绘科学与技术]