摘要
在城市轨道的盾构施工过程中,如何保证盾构掘进方向的精准性一直是行业内关注的问题。城市CORS系统能够帮助城市轨道交通工程建立有效的平面测绘基准,而在长隧道中,陀螺定向相较于常规的联系测量加导线的方式具有不可比拟的优势。本文将结合杭州至富阳城际铁路项目的某段盾构隧道,采用城市CORS系统建立平面基准网,并将NTS-342G10型陀螺全站仪应用于该隧道,进行真北定向,并对导线测量结果进行对比分析,证明了CORS结合陀螺仪在隧道定向测量中的有效性。
In the process of shield tunneling of urban rail,it has always been a concern in the industry about how to ensure the precision of shield tunneling direction.CORS system can help urban rail transit engineering to establish effective plane surveying and mapping benchmark,and in long tunnel,gyro orientation has incomparable advantages compared with the conventional method of connecting survey and conductor.This article will combine to Hangzhou-Fuyang intercity railway projects of a certain section of the shield tunnel,urban CORS system is adopted to establish the benchmark network,and the NTS-342G10 type gyro total station is applied in the shield tunnel to do the true north direction,and the traverse survey results were analyzed and proved the effectiveness of CORS combining gyro orientation measurement in tunnel.
作者
杨彬
林飞
Yang Bin;Lin Fei(Hangzhou Geotechnical Engineering & Surveying Research Institute Co.,Ltd.,Hangzhou 310012,China)
出处
《城市勘测》
2021年第4期124-126,131,共4页
Urban Geotechnical Investigation & Surveying
关键词
CORS
基准网
陀螺仪
真北定向
CORS
benchmark network
gyroscope
true north orientation
