实景三维场景下的地质灾害识别特征与潜力分析

Identification characteristics and potential analysis of geological hazards in realistic 3D scenes

地质灾害的准确识别与分析是防治预警前的关键环节,相比二维解译环境,实景三维因其立体化、真实化特点,突显出了更加有利的数据优势。本文以实景三维建设为契机,采用三维视觉分析方法,建立滑坡拉张裂缝、剪切裂缝、新鲜滑塌、滑坡壁、下挫台坎,崩塌危岩、坡脚堆积,泥石流物源区、流通区和堆积区共12种三维识别标志特征;采用三维WebGIS技术解析滑坡、崩塌立体特征,并从几何信息、影像特征、微地貌等方面,分析总结了实景三维应用潜力。结果表明,实景三维为地质灾害解译提供了新的纬度,增强了地质灾害识别能力,解译结果更符合实际,有助于提高解译精度。研究成果可为实景三维应用提供启示,为地质灾害隐患高质量识别研究提供借鉴价值。

Accurate identification and analysis of geological hazards is a crucial step before prevention and early warning.Compared to 2D interpretation environments,the 3D reality of real scenes highlights more favorable data advantages due to its 3D and realistic characteristics.This article takes the real scene 3D construction as the background and adopts the 3D visual analysis method to establish a total of 123D identification characteristics for landslide tension cracks,shear cracks,fresh landslides,landslide walls,falling platforms,collapsed dangerous rocks,slope foot accumulation,debris flow source area,circulation area,and accumulation area;Using 3D webGIS technology to analyze the 3D characteristics of landslides and collapses,and analyzing and summarizing the potential of real-world 3D applications from geometric information,image features,micro topography,and other aspects.The results indicate that real-world 3D provides a new dimension for geological hazard interpretation,enhances the ability to identify geological hazards,and the interpretation results are more in line with reality,which helps to improve interpretation accuracy.The research results can provide inspiration for real-time 3D applications and provide reference value for high-quality identification of geological hazard hazards.