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地铁自动化监测项目平面控制网复核方法探讨

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采用自动化全站仪[1]进行地铁保护区监测已经成为国内地铁监测的常规手段.该套自动化监测系统将全站仪安装于监测区域内,两端各设置 4 个(共 8 个)后视棱镜作为控制点,后视棱镜设置在影响区域外默认为不动的基准点,测站坐标通过 8 个后视棱镜实时更新,从而达到监测目的.但由于列车震动等多方面影响 8 个后视棱镜发生变形[2],会使得整套自动化监测系统发生整体变形,所以自动化后视棱镜需要定期进行人工复核.本文提出一种自动化监测系统平面控制网复核方法,通过在系统两端各设置 1 个复核支架和2 个复核棱镜,再通过导线测量和相关方法解算能有效测量出后视棱镜及监测支架是否发生位移变形及精准求出变形量的大小.
Discussion on the Review Method of the Plane Control Network of the Subway Automation Monitoring Project
The use of automated total stations for monitoring subway protection areas has become a common method of subway monito-ring in China.The set of automatic monitoring system will be installed in the monitoring area,each end of the 4(a total of 8)rearview prisms as the control point,the rearview prism set outside the influence area defaults to a immovable reference point,the station coor-dinates through 8 rearview prisms updated in real time,so as to achieve the purpose of monitoring.However,due to the deformation of the 8 rearview prisms due to the impact of train vibration and other aspects,the overall deformation of the entire automatic monitoring system will occur,so the automated rearview prisms need to be manually reviewed regularly.This paper proposes a method for revie-wing the plane control network of an automated monitoring system.By setting 1 review bracket and 2 review prisms at each end of the system,and then using wire measurement and related methods to calculate,it is possible to effectively measure whether the rearview prism and monitoring bracket have displacement deformation and accurately determine the size of the deformation.

rearview prismplane control network reviewreview bracketreview prism

刘敏、王章华

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北京城建勘测设计研究院有限责任公司杭州分公司,浙江 杭州 310000

杭州地铁运营有限公司,浙江 杭州 310000

后视棱镜 平面控制网复核 复核支架 复核棱镜

2024

测绘与空间地理信息
黑龙江省测绘学会

测绘与空间地理信息

影响因子:0.788
ISSN:1672-5867
年,卷(期):2024.47(6)
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