基于三维激光扫描技术的滑坡监测预警研究

地面三维激光扫描技术突破了传统监测方法的限制,可以高精度、高密度、高效率、远距离、无接触地获取地表对象的三维空间信息数据,在工程领域得到广泛应用。目前,水电工程地质灾害监测预警仍多采用传统监测手段,自动化程度不高,特别是分布有大量危岩体或孤石群的高陡岩质滑坡体,传统监测手段存在一定局限性。基于此,笔者分析了三维激光扫描技术的研究现状与工程应用实践,介绍了三维激光扫描系统的基本原理,以某水电工程大型滑坡体为例,探索了三维激光扫描技术在地质灾害监测预警方面的有效性。结果表明,三维激光扫描监测新手段在滑坡地质灾害监测预警方面达到了预期效果,其监测预警的成功经验有在水电工程中推广和借鉴的价值。

Research on Monitoring and Early Warning of Landslide Based on 3D Laser Scanning Technology

Ground 3D laser scanning technology breaks through the limitation of traditional monitoring methods,and it can obtain,free of contact from a long distance,3D spatial information data of surface objects with high precision,density and high efficiency,so it has been widely used in the engineering field.At present,monitoring and early warning of geological disasters in hydropower projects mostly adopts traditional monitoring methods,which are not highly automated.In particular,limitation still exists in traditional monitoring methods for high and steep rockslides distributed with a large number of dangerous rock masses or isolated rock groups.Based on this,the research status and engineering application practice of 3D laser scanning technology are analyzed,the basic principle of 3D laser scanning system is introduced,and the effectiveness of 3D laser scanning technology in geological disaster monitoring and early warning is explored by taking a large landslide in a hydropower project as an example.The results show that 3D laser scanning monitoring method has achieved the expected effect in monitoring and warning of landslide geological disaster,and its successful experience in monitoring and warning has the value of popularizing and reference for hydropower engineering.