扫描无人管的高流量道路

Author:Kiew Tian Lim

The Singapore Land Transport Authority’s (LTA) motto isWe Keep Your World Moving. The organisation had committed to it with the construction of Mass Rapid Transit (MRT) System – Thomson-East Coast Line (TEL), which enhances rail connectivity cutting across from North to South corridors of the city. The new MRT line will greatly enhance the accessibility to the Central Business District and Marina Bay area.

年代ignificantly improving travel time for commuters, the construction of TEL includes 43 kilometres of underground tunnel from Woodlands North Station to Sungei Bedok Station. With 4.5 km of tunnels underneath the dual three-lane heavy traffic Seletar Expressway (SLE), monitoring is of paramount importance where the contractor is to ensure negligible road deformation or disturbance that will affect the traffic flow.

工程公司TRITECH工程与测试PTE LTD签订了合同，以实时使用全自动监控系统监视道路表面。为了提供这项服务，由于重要情况和高度严格的监视要求，Tritech是由Leica Geosystems的监视解决方案启动的。

激光扫描和总站

使用Leica Nova MS60多站以及Leica Geomos监控软件V6，然后Tritech能够建立一个自动道路监控系统（ARMS），涵盖受隧道钻孔机（TBM）影响的两公里的SLE的临界点范围，下。Leica Geosystems多稳固性的基本激光扫描功能以及无反射和棱镜测量的结合进行了救援，因为在道路上的棱镜安装很容易被通行车辆销毁，这不是该项目的选择。

“借助MS60 MulitStation，我们能够设置手臂，提高生产力作为无人测量系统，”said Dr. Tor Yam Khoon, registered surveyor with Tritech Engineering & Testing (S) Pte. Ltd.“The system also serves as an effective measuring system delivering the results wirelessly soon after the completion of a measurement epoch.”

系统的自动扫描能力启用了变形信息的快速传递。凭借GEOMOS图像辅助扫描区域定义功能，该公司能够将定义的区域添加到测量周期中。对于公司而言，这种联合解决方案有助于增强：

• Accuracy and reliability;
• Quick interpretation of monitoring data; and
• 正确的补救决策。

“ Leica Nova MS60是总站的良好混合物，使用新Leica Geomos N.Vec技术使用玻璃棱镜和表面对点的变形监测有用。在路面监测的这个项目中，已很好地证明了N.VEC技术在水平表面上的成功应用。”said Dr. Tor.“绝对最好从至少500个读数的扫描贴片中得出变形的向量，而不是从单个反射式读取中得出变形。”

The data of the eight MultiStations used on the project was collated in Tritech’s proprietary automated structured monitoring system. The automatic monitoring system, with ability to measure at four hourly cycles, seven days a week, of the MultiStation and GeoMoS translated into major cost savings in labour.

数据是从在4毫米高的观察平台上在路肩上设置的多阶段收集的，该平台的中间位于相距25 m的四排路面斑块。这四个扫描斑块是在穿过白路标记的路上的行中定义的。定期监视这16个常规扫描贴片。在每个25米的常规监视区之间，也有相距5 m的“备用”扫描贴片定义。每当有计划或计划外切割器头部干预时，这些备用扫描贴片将被添加到监视方案中，以进行自动监视周期。尽管上述多阶段正在主动监视中，但将在TBM进入其监视区域时将其设置为前方，并准备就绪。

年代upport from abroad

For such a precise setup, there were initial challenges. Leica Geosystems staff in Singapore worked diligently with support staff in Switzerland to quickly diagnose the setup issues and effectively resolve them.

“When there was a need to change the MultiStation in the midst of the monitoring campaign, there were no adverse effects to the project due to a timely and effective response by Leica Geosystems technical support,”said Dr. Tor.

Leica Geosystems的监视解决方案支持LTA履行其诺言，并使世界在繁重的建筑项目中迁移。