三维激光扫描与BIM技术在泵闸流道变截面偏差检测中的应用OA

The variable cross-section deviation of special-shaped concrete is a key and challenging aspect of construction control in hydraulic pump and sluice engineering projects.To address the difficulty and low accuracy of manual deviation detection methods in variable cross-sections construction quality deviation,it is necessary to explore the practical application of 3D laser scanning technology in quality detection for these cross-sections.This study summarizes the technical process of combining 3D laser scanning with BIM and analyzes the theoretical methods of 3D laser scanning.Taking the Xinchuansha pump and sluice project as a case study,high-precision non-contact scanning technology is employed to acquire point cloud data of the special-shaped channel.This 3D space coordinate information is then utilized to generate a point cloud model,which is compared with the BIM model established from the construction drawings.The results show that the construction quality deviation analysis is accurate to the millimeter level,with deviations within±20 mm accounting for 87.21%.Additionally,the maximum inter-station error of the point cloud model is 9.8 mm,demonstrating the feasibility of applying this method to detect quality deviations in special-shaped concrete channels for pump and sluice engineering projects.This study provides guidance and reference for achieving precision visualization in quality control for other pump and sluice engineering projects.