地铁轨道控制网网形设计及模拟计算分析  

Design,Simulation,Calculation and Analysis of Metro Track Control Network

作　　者：梅文胜[1,2] 王忠仁 于安斌 祁洪宇 徐国胜 MEI Wensheng;WANG Zhongren;YU Anbin;QI Hongyu;XUGuosheng(School of Geodesy and Geomatics, Wuhan University, Wuhan 430079 ,China;Key Laboratory of Precise Engineering and Industry Surveying, National Administration of Surveying, Mapping and Geoinformation,Wuhan 430079 ,China;China Railway Engineering Consulting Group Co. , Ltd. , Beijing 100055 ,China)

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]精密工程与工业测量国家测绘地理信息局重点实验室,湖北武汉430079 [3]中铁工程设计咨询集团有限公司,北京100055

出　　处：《测绘地理信息》2018年第2期64-68,共5页Journal of Geomatics

基　　金：中国中铁重点资助项目(KY-2017-10)

摘　　要：根据地铁隧道曲线段的不同曲线半径,设计了地铁轨道控制网的控制点纵向间距。以不同的观测精度,模拟生成含随机观测误差的地铁轨道控制网的观测值,采用边角网间接平差模型和方差分量估计方法进行平差计算,分析对比网的纵向间距、观测仪器的标称精度、平差后的最弱点点位中误差以及相邻点相对中误差之间的关系,确定地铁轨道控制网的合理布设网形及其精度指标。研究成果对地铁轨道控制网的布设及测量有实际参考价值。According to the different radius of curve in metro tunnel,this paper calculates the longitudinal distance between two control points in metro track control network.With different observation accuracies,this paper simulates the observations with random error of the network,and adjusts the observations based on parameter adjustment of sideangle measurement network and Helmert variance component estimation method.According to the analysis of the relationships among the longitudinal distance,the nominal accuracy of the observation instrument,the most weakness position accuracy and the relative position accuracy of two points,we confirm the reasonable network of the metro track control network and its appropriate precision standard.Research result provides practical reference for point layout and network survey of the metro track control network.

关 键 词：地铁轨道控制网 控制点纵向间距 网形设计 模拟计算分析 

分 类 号：P221[天文地球—大地测量学与测量工程] U212[天文地球—测绘科学与技术]