摘要
因突发灾害性滑坡具隐蔽性强、预判性低、摧毁性高、发生时间和地点不确定等特点,造成此类滑坡运移过程较难以视频方式记录,尤其是采用具可对比性价值的延时摄影记录观测方式。为解决记录难和分析应用价值不高的问题,对甘肃省舟曲县牙豁口突发滑坡采用定点定向延时摄影方法记录滑坡滑动过程,并通过动态追踪方法对视频内滑坡体上特征点进行移动追踪和轨迹提取,真实展示了滑坡运移过程中局部变化规律和块体运移特征。结果表明:“延时摄影+动态追踪”的滑坡观测和分析方法,可为滑坡地质灾害教学、研究和防治提供珍贵的现实观测影像素材和块体移动规律分析成果。
Due to the characteristics of sudden disastrous landslide,such as strong concealment,low predictability,high destructiveness,uncertain occurrence time and location,it is difficult to record the migration process of this kind of landslide by video,especially by using the time-lapse photography observation method with comparable value.In order to solve the problems of difficulty in recording and low value of analysis and application,the landslide sliding process is recorded by fixed-point directional time-delay photography for Yahuokou sudden landslide in Zhouqu County,Gansu Province,and the movement tracking and trajectory extraction of feature points on the landslide mass in the video are carried out by dynamic tracking method,which truly shows the local change law and block migration characteristics in the process of landslide migration,A landslide observation and analysis method of“time-delay photography+dynamic tracking”is proposed.The results show that this method can provide valuable real observation image materials and analysis results of block movement characteristics for landslide geological disaster teaching,research and prevention.
作者
何斌
徐新兰
郭富赟
胡文博
HE Bin;XU Xinlan;GUO Fuyun;HU Wenbo(Key Laboratory of Groundwater Engineering and Geothermal Resources,Lanzhou Gansu 730000,China;Geological Environment Monitoring Institute of Gansu Province,Lanzhou Gansu 730000,China;Gansu Environmental Geology and Geohazards Engineering Research Centre,Lanzhou Gansu 730000,China)
出处
《中国安全生产科学技术》
CAS
CSCD
北大核心
2022年第S01期37-41,共5页
Journal of Safety Science and Technology
基金
甘肃省科技重大专项项目(19ZD2FA002)
关键词
延时摄影
动态追踪
突发地质灾害
滑坡
time delay photography
dynamic tracking
sudden geological disaster
landslide
