摘要
在城市地铁的建设中,需在地下结构内建立高精度的高程控制网。为将地面高程控制网引入地下,需进行高程联系测量。本文结合长沙市轨道交通2号线一期工程竣工贯通测量实例,对悬挂钢尺法高程传递测量的测量原理、误差源及作业流程进行了详细分析。从实测结果可以得出,该方法能满足城市轨道交通二等水准测量的精度要求。
In the construction of urban subway ,a high-precision vertical control network in the underground struc-ture has to be established .To transmit the vertical control network to underground ,vertical connection survey is needed . This paper takes the holing through survey for the first phase of Changsha Metro Line 2 project for example , and intro-duces the measuring principle ,operation process and error source of this method in detail .From the surveying result ,it can be found that the method can meet the accuracy requirements of urban rail transit precise leveling .
出处
《城市勘测》
2014年第3期111-113,共3页
Urban Geotechnical Investigation & Surveying
关键词
悬挂钢尺法
高程传递测量
尺长改正
地铁工程应用
结果分析
suspended steel tape
elevation transference
tape length correction
application in the subway project
a-nalysis of the results
