铁路长大隧道线路中线偏差调整方案研究  

Research on Midline Deviation Adjustment in Railway Long Tunnel

作　　者：赖鸿斌[1] 卢建康[1] 梅熙[1] 马德英[2] LAI Hongbin;LU Jiankang;MEI Xi;MA Deying(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;Southwest Petroleum University,Chengdu 610500,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031 [2]西南石油大学,成都610500

出　　处：《高速铁路技术》2018年第S01期111-115,共5页High Speed Railway Technology

摘　　要：铁路长大隧道施工开挖时,其测量基准采用的是施工单位布设的隧道施工控制网;而后续轨道铺设、精调及维护的测量基准则是隧道贯通后设计单位布设的洞内CPⅡ平面控制网。由于测量方法、网型、阶段等不一样,加上隧道内测量条件差、测量误差易于累积等原因,导致两个控制网的测量成果不完全兼容,从而影响隧道施工中线与后续轨道铺设、精调及维护的中线一致性,易出现隧道内线路侵界现象。本文结合多条铁路长大隧道洞内CPⅡ测量生产过程中碰到的实际问题的解决与处理经验,对隧道线路中线偏差调整技术进行了研究,在控制长大隧道平面贯通误差及在长大隧道线路中线偏差调整方法等关键环节进行逐一、详细地分析和探讨,并给出具体的解决方法,从而为今后长大隧道平面控制测量顺利开展提供了宝贵的经验和正确的思路,同时也为如何进行长大隧道中线偏差调整提供了重要的参考。The surveying datum is the construction control network when excavation begins.Afterwards,the datum is changed to CPⅡcontrol network when we lay tracks,adjust the line precisely and maintain tracks.Not only because of different methods of surveying,networks types,construction phases,but also due to tough conditions in tunnels and easily accumulative errors,the results of these two control networks surveying are incompatible.Therefore,it could have bad influence on the consistency between construction central line and laid track’s central line,which could result in beyond-limit in tunnels.According to the sufficient experience of many lines’construction surveying,this paper discussed deeply about the critical steps of adjustment based on studying on the adjustment technology of the central line’s offset and gave the detailed solutions and valuable guidelines to the upcoming horizontal control surveying and central line’s offset adjustment of long tunnels.

关 键 词：铁路 长大隧道 中线偏差 调整 

分 类 号：U456[建筑科学—桥梁与隧道工程]