三维激光扫描技术在阎家沟滑坡变形监测中的应用  

Application of 3D laser scanning technology in deformation monitoring of the Yanjiagou Landslide

作　　者：薛强[1] 毕俊擘[1] 李政国[1] 黄玉华[1] XUE Qiang;B;LI Zhengguo;HUANG Yuhua(Xi＇an Center of Geological Survey,China Geology Survey,Xi＇an,Shaanxi 710054,China)

机构地区：[1]中国地质调查局西安地质调查中心,陕西西安710054

出　　处：《中国地质灾害与防治学报》2018年第3期108-112,共5页The Chinese Journal of Geological Hazard and Control

基　　金：国家自然科学基金重点项目(41530640);中国地质调查局项目(1212011140018);国土资源部黄土崩滑灾害--陕西延安野外科学观测研究基地资助

摘　　要：为分析子长县阎家沟滑坡的变形特征,在2012年和2013年分3期对滑坡体进行了三维激光扫描。采用点云拼接、数据过滤、植被去除等技术手段,获取滑坡体在不同时期的DEM数据,基于多期DEM进行了滑坡整体变形分析,并通过多期点云数据的叠加及剖面生成,分析了滑坡局部及特征点的变形情况。分析结果表明,滑坡处于蠕动变形阶段,滑坡体前缘整体变形量在0.25~0.65 m/a;从2012年6月27日到2012年10月31日,滑坡体高程最大下降值为0.5 m;从2012年10月31日到2013年10月20日,滑坡体最大下错位移为1.2 m。三维激光扫描技术可精确的监测滑坡的表部变形情况,在滑坡变形监测中具有良好的应用前景。In order to analyze the deformation characteristics of Yanjiagou Landslide in Zichang County,threedimensional laser scanning was carried out in three period since 2012 and 2013. Multi-period DEM data of landslide was obtained by using point clouds stitching,data filtering,vegetation removal and other technical means. The overall deformation analysis of landslide is carried out based on multi-period DEM. The deformation of partial locations and feature points of landslide is analyzed by superposition of multi-period point clouds and profile generation. The results show that the landslide is in the process of peristaltic deformation,and the overall deformation of landslide front is 0. 25 - 0. 65 m/a. From June 27,2012 to October 31,2012,the maximum decline of landslide elevation was 0. 5 m,from October 31,2012 to October 20,2013,the maximum sliding displacement of landslide body was 1. 2 m. Three-dimensional laser scanning technology can accurately monitor the deformation of the landslide surface,which has a good prospect in landslide deformation monitoring.

关 键 词：三维激光扫描 点云 变形监测 阎家沟滑坡 

分 类 号：P642.22[天文地球—工程地质学]