长大隧道洞内交叉导线网网形优化技术及其横向精度的仿真计算分析  

Optimization Technology and Simulation Analysis of Transverse Accuracy of Cross Traverse Networks in Long Tunnels

作　　者：辉春福 高兵 谢先武 刘成龙 HUI Chunfu;GAO Bing;XIE Xianwu;LIU Chenglong(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;China Railway 11 th Bureau Group 5 th Engineering Co.,Ltd.,Chongqing 400037,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]中铁十一局集团第五工程有限公司,重庆400037

出　　处：《测绘与空间地理信息》2024年第12期36-39,44,共5页Geomatics & Spatial Information Technology

基　　金：中铁十一局集团公司2020年科研项目(20-AII-10)资助。

摘　　要：洞内平面控制测量误差是引起长大隧道横向贯通误差的主要因素,而过大的横向贯通误差将给隧道施工带来一些难以解决的工程问题,因此长大隧道洞内平面控制测量方法研究一直是该领域的研究热点。本文分析了长大隧道洞内平面控制测量3种主要方法的优缺点,认为常规交叉导线网是3种方法中横向误差相对最小的,继而分析并认为引起常规交叉导线网横向误差的主要因素是旁折光的影响,为此针对性地对常规交叉导线网网形进行优化,提出了一种不受旁折光影响的异形交叉导线网。仿真计算结果表明,异形交叉导线网与正形交叉导线网具有相同的横向精度,且基本上不受旁折光的影响,因而是洞内平面控制测量的一种推荐方法。The error of the planimetric control survey in the tunnel is the main factor that causes the transverse penetration error of the long tunnel,and the excessive transverse penetration error will bring some difficult engineering problems to the tunnel construction.Therefore,the research of the method of the planimetric control survey in the long tunnel has always been the research hotspot in this field.In this paper,the advantages and disadvantages of three main methods of planimetric control survey in the long tunnel are analyzed,and the transverse error of conventional cross transverse network is relatively minimum among the three methods.Then,the main factor causing the transverse error of conventional cross traverse network is analyzed and the influence of side refraction is considered.Therefore,the abnormally shaped cross traverse network is proposed on the basis of an optimized normally shaped cross traverse network.The simulation results show that this kind of network has the same lateral accuracy as the normally shaped cross traverse network,and is basically not affected by the side-refraction.Therefore,it is a recommended method for planimetric control survey in tunnels.

关 键 词：长大隧道 正形交叉导线网 异形交叉导线网 横向贯通中误差 仿真计算 旁折光 

分 类 号：P221.4[天文地球—大地测量学与测量工程]