| 时间: 2021-01-10 | 次数: |
谢金, 杨根兰, 草乙根,等.基于无人机与Rockfall的危岩体结构特征识别与运动规律模拟[J].河南理工大学学报（自然科学版）,2021,40(1):55-64.
XIE J, YANG G L, QIN Y G, et al.Structural feature recognition and motion law simulation of dangerousrock mass based on UAV and Rockfall[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(1):55-64.
基于无人机与Rockfall的危岩体结构特征识别与运动规律模拟
谢金, 杨根兰, 草乙根, 刘榜余
贵州大学 资源与环境工程学院，贵州贵阳550025
摘要:赤水红层地区高陡边坡危岩体具有位置险峻、隐蔽性强等特点，致使危岩体的识别成为困扰工程建设的巨大难题。针对研究区危岩体调查难以开展的问题，利用无人机倾斜摄影技术，获取带有空间地理坐标的照片。运用Agisoft PhotoScan软件构建了唐家屋基边坡高清数字地表模型（DSM），利用三点不共线可确定一个平面的原理，在模型中提取结构面空间点云坐标，计算出结构面产状，并对危岩体的结构特征进行提取，确定了4处典型危岩体。基于三维模型对危岩体的体积进行了测量，通过定性分析得知，危岩体处于欠稳定状态。利用Rockfall 软件对4个危岩体的崩落运动特征进行模拟，发现危岩体发生崩塌破坏后滚石会对坡脚房屋和公路造成破坏。研究结果对高陡边坡危岩体的勘察、稳定性评价及影响范围确定有重要参 考价值。
关键词:危岩体;无人机;高清数字地表模型;崩塌;赤平投影;Rockfall软件
doi:10.16186/j.cnki.1673-9787.2019090077
基金项目:贵州省交通运输厅科技项目（2016-123-029）；贵州省科技厅科技平台及人才团队计划项目（黔科合平台人才［2017 ］ 5402 号）
收稿日期:2019/09/19
修回日期:2019/12/24
出版日期:2021/01/15
Structural feature recognition and motion law simulation of dangerousrock mass based on UAV and Rockfall
XIE Jin, YANG Genlan, QIN Yigen, LIU Bangyu
College of Resources and Environmental Engineering， Guizhou University， Guvyang 550025 ， Guizhou， China
Abstract:For the characteristics of precipitous location and strong concealment of dangerous rock mass of high- steep slope in Chishui red bed area， the identification of dangerous rock has always been a huge problem for human engineering construction. In order to solve the problem that it is difficult to carry out the investigation of dangerous rock mass in the study area， the author used UAV tilt photography technology to obtain the photos with spatial geographic coordinates. A high-resolution digital surface model （ DSM ） of Tangjiawuji slope was constructed by Agisoft PhotoScan software. Based on the principle of a plane being be determined by three points which were not collinear， the spatial point cloud coordinates of the structural plane space were extracted in the model to calculate the occurrence of structural plane. The structural characteristics of the dangerous rock mass were extracted and four typical dangerous rock masses were identified. The volume of the dangerous rock mass was measured based on the three-dimensional model， and the qualitative analysis showed that the dangerous rock mass was in an unstable state. Numerical simulating software Rockfall was used to simulate the characteristics of the collapse movement of four dangerous rock masses. The results showed that it would damage the houses and roads at the foot of slope after the collapse of the dangerous rock mass. The research results had important reference value for the investigation， stability evaluation and influence range research of the dangerous rock mass of high-steep slope.
Key words:dangerous rock mass;unmanned aerial vehicle;high-resolution digital surface model;collapse;stereographic projection;Rockfall software
