高铁长大隧道洞内CPII网分多段建网方案探讨  

A discussion of multi-segments networking of CPII control network in the long high-speed railway tunnels

作　　者：王建成[1,2] 刘成龙[1,2] 杨思山 刘志[1,2] WANG Jiancheng;LIU Chenglong;YANG Sishan;LIU Zhi(Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China;State-Province Joint Engineering Laboratory in Spatial Information Technology for High-Speed Railway Safety, Chengdu 611756, China)

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都611756 [2]高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都611756

出　　处：《铁道科学与工程学报》2017年第7期1361-1368,共8页Journal of Railway Science and Engineering

基　　金：长江学者和创新团队发展计划资助项目(PCSIRT)

摘　　要：现行高速铁路测量规范中规定:无砟轨道隧道洞内CPII控制网应在隧道贯通后一次性进行建网测量。然而,由于施工工期紧,一些高铁长大隧道洞内CPII控制网不得不分多段进行建网测量。以宝峰隧道洞内CPII控制网分三段建网为例,提出高速铁路长大隧道洞内CPII控制网分多段建网的测量技术,并且进行分析探讨。利用提出的自由测站边角交会网和交叉导线网混合构网的方法,以及段与段之间搭接数据顺推处理的技术,能够建立满足精度要求的洞内CPII控制网,并且避免各段单独建网时搭接误差大而难以处理的风险。该方案值得在高速铁路长大隧道洞内CPII控制网分多段建网时应用。The current high-speed rail measurement specifications stipulated that CPII control network of Ballastless track in the tunnels should be completed by one time after tunnel holing through.However,some of the CPII control network in the long high-speed railway tunnels have to divide into Multi-segments due to the tight construction.In this paper,the application was illustrated by the example of Baofeng tunnel-CPII control network for three segments,and the measurement technology of multi-segments networking of tunnel-CPII control network was put forward.Using the hybrid structure network that consists of free-station linear-angular intersection network and crossover traverse network mentioned in the paper and the technology that overlapping data no error handling,the tunnel-CPII control network of meeting the requirement of precision was established.On the other hand,this project also can avoid the risk that lap error is large and difficult to deal with when each segments constructed respectively.So,the solution is worth applying on the CPII control network in the long high-speed railway tunnels.

关 键 词：高铁长大隧道 CPII控制网 分段建网 交叉导线网 自由测站边角交会网 

分 类 号：U238[交通运输工程—道路与铁道工程] TB22[天文地球—大地测量学与测量工程]