基于三维激光扫描的暗涵检测技术应用研究

Research on the application of hidden culvert detection technology based on 3D laser scanning

城镇排水暗涵是防汛排水体系的重要基本设施,暗涵雨污合流导致河流水系污染严重,年久失修易出现淤堵、渗漏、塌陷等病害。三维激光扫描可以快速复建暗涵1∶1三维点云模型,并获得实际地理坐标。在分析现有的暗涵检测技术基础上,总结三维激光扫描暗涵检测技术的方法原理、技术路线,结合实际工程应用,采用三维激光扫描技术查明排水暗涵的平面位置、埋深、走向、管径、材质以及排水暗涵的内部缺陷、混错接情况,为暗涵整治设计方案提供依据。

Urban drainage culvert is an important basic facility of flood control drainage system,the confluence of rain and sewage in the hidden culvert causes serious pollution of the river system,Long-term disrepair is prone to blockage,leakage,collapse and other diseases.3D laser scanning can quickly reconstruct a 1∶13D point cloud model of dark culverts,and obtain actual geographic coordinates.Based on the analysis of the existing hidden culvert detection technology,summarize the method principle,technical route of 3D laser scanning hidden culvert detection technology,combined with the actual engineering application,this paper uses the three-dimensional laser scanning technology to find out the plane position,buried depth,direction,pipe diameter,material,and internal defects and mixed drainage of the drainage culvert.The misconnection provides a basis for the design scheme of concealed culvert remediation.