小半径、大深度隧道贯通测量的研究与实践  

The Research and Practice of Small Radius and Deep Tunnel Breaking Through Surveying

作　　者：程远达[1] 傅晓明[1] 

机构地区：[1]上海市测绘院,上海200063

出　　处：《城市勘测》2014年第2期134-137,共4页Urban Geotechnical Investigation & Surveying

摘　　要：隧道贯通测量一直是地下隧道施工测量的难点与关键,小半径、大深度隧道的贯通测量更需采取适合工程特点的技术措施,本文依据贯通测量的工艺流程,分析了贯通测量的主要误差来源,并针对小半径、大深度隧道估算了关键工序的测量误差值,科学地提出了控制联系三角形定向和地下导线测量精度的措施,经工程实例进行验证,取得了较好效果。Tunnel breaking through surveying is one of the difficult and crucial problems in underground tunnel con -struction measurement .The small radius and deep tunnel breaking through surveying needs technical measures which are more suitable for the project environment .According to the technology of the breaking through surveying ,this paper ana-lyzed the source of the measurement error of breaking through surveying ,and estimated error values of the key processes . A scientific error control method of connection triangle orientation and underground traversing has been proposed .The method has also been tested in practice ,and a better result has been obtained .

关 键 词：小半径 大深度 隧道贯通测量 联系三角形定向 地下导线测量 

分 类 号：P258[天文地球—测绘科学与技术]