基于三维激光扫描的隧洞施工数字化系统建设及应用

Construction and application of digital system for tunnel construction based on 3D laser scanning

摘要

抽蓄工程建设涉及到地下厂房、引水隧洞等地下洞室施工，建设工期紧、质量要求高。为了提升隧洞工程建设数字化水平，提高建设效率，保障工程质量，构建了基于微服务架构的隧洞施工数字化系统，基于cesium实现了大规模隧洞三维点云数据的轻量化和可视化。系统利用三维激光扫描仪采集的隧洞开挖、支护与衬砌等阶段施工形象的点云数据，结合隧洞设计参数，实现对隧洞超欠挖、支护的体型的偏差、喷射混凝土厚度、衬砌厚度与平整度等质量要素的统计与分析。基于三维点云数据对隧洞工程进度进行监控，对施工强度进行统计分析，对隧洞开挖及支护的工程量进行计量，对隧洞变形进行三维可视化查询。系统能够基于分析结果自动化生成隧洞施工质量分析报告及满足工程管理要求的验评表单及签证。系统在某抽水蓄能电站工程的进厂交通洞进行了工程应用，对工程的建设管理提供了有效支撑。

Abstract

The construction of pumped storage projects involves the construction of underground caverns such as underground powerhouses and diversion tunnels, with tight construction schedules and high quality requirements. In order to improve the digital level of tunnel engineering construction, increase construction efficiency, and ensure project quality, a digital system for tunnel construction based on microservice architecture has been constructed, and lightweight and visualization of large-scale 3D point cloud data for tunnel construction have been achieved based on Cesium. The system utilizes point cloud data collected by 3D laser scanners during tunnel excavation, support, and lining stages, combined with tunnel design parameters, to achieve statistical analysis of quality factors such as tunnel over and under excavation, support deviation, shotcrete and lining thickness and flatness. Based on 3D point cloud data, the system monitors the progress of tunnel engineering, analyzes construction intensity, measures the quantities of tunnel excavation and support, and conducts 3D visualization queries on tunnel deformation. The system can automatically generate tunnel construction quality analysis reports based on analysis result and meet the requirements of engineering management for inspection and evaluation forms and visas. The system has been applied in the access tunnel of a pumped storage power station project, providing effective support for the construction management of the project.

关键词

隧洞 / 三维激光 / 智能建造 / 数字化 / 点云

Key words

tunnel / 3D laser scan / intelligent construction / digital / point cloud

基金资助

中国长江三峡集团有限公司科研项目(WWKY-2021-0483)