全地形CCTV检测与三维激光扫描技术在排水暗涵排查中的应用

Application of all-terrain CCTV detection and 3D laser scanning technology in investigation of drainage culverts

本文为将排水暗涵内部的结构性、功能性缺陷,污水混接,断面尺寸,箱涵边界,顶底标高查明,准确定位空间信息,采用全地形闭路电视(CCTV)检测与三维激光扫描技术相结合的方法在特殊暗涵段排查中应用。解决了常规CCTV检测无法精确定位和量测的难题,提高了排水暗涵检测效率和质量,为设计改造提供丰富的模型、影像、图纸、数据等,避免因为排查精度不够导致的改造阶段的设计方变更,节省工程费用。

To identify structural and functional defects inside drainage culverts,sewage mixing,section size,box culvert boundary,and top and bottom elevation and accurately locate spatial information,this paper applied all-terrain closed circuit television(CCTV)detection and three-dimensional(3D)laser scanning technology in the investigation of special hidden culvert sections.As a result,it solved the problem that conventional CCTV detection failed to accurately locate and measure the culvert,improved the efficiency and quality of drainage culvert detection,provided rich models,images,drawings,and data for design and renovation,reduced design party changes caused by insufficient investigation accuracy,and saved project costs.