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隧道建设(中英文) ›› 2012, Vol. 32 ›› Issue (5): 686-689.DOI: 10.3973/j.issn.1672-741X.2012.05.013

• 施工技术 • 上一篇    下一篇

无定向导线在广州地铁测量中的应用

魏本现1, 蒋宗权2   

  1. (1.广州市地下铁道总公司, 广州 510380; 2.中铁隧道勘测设计院有限公司, 天津  300133 )
  • 收稿日期:2012-05-10 修回日期:2012-07-06 出版日期:2012-10-20 发布日期:2012-10-30
  • 作者简介:魏本现(1972—),男,山东日照人,2002年毕业于华南理工大学土木工程专业,硕士,高级工程师,从事测量和监测管理工作。

Application of Nonoriented Traverse in Surveying of Guangzhou Metro

WEI Benxian1, JIANG Zongquan2   

  1. (1. Guangzhou Metro Corporation, Guangzhou 510380, China;  2. China Railway Tunnel Survey & Design Institute Co., Ltd., Tianjin 300133, China)
  • Received:2012-05-10 Revised:2012-07-06 Online:2012-10-20 Published:2012-10-30

摘要: 由于点位变动、破坏等原因,会遇到已测设的定向附合边精度不再满足规范规定或附合边不再存在的问题。在无法或无需重新测设附合边的情况下,就只能采用无定向导线测量形式。结合广州地铁测量案例,介绍了无定向导线的计算方法和精度特点,对无定向导线在地铁的应用进行探讨。得出以下结论: 1)用无定向导线复测精密导线网,可减少因定向附合边方位变动所引起的误差; 2)用无定向导线确定盾构定向是一种有效且精度较高的方法,是地下定向测量的有效补充; 3)用无定向导线进行区间贯通联测可提高控制点相对精度,有利于控制基标的测设和检测。

关键词: 广州地铁, 无定向导线, 测量精度

Abstract: Due to the change or damage of the survey points, the precision of the oriented boundary surveyed can not meet the requirements of relevant standards, or the oriented boundary disappear. Under such circumstance, nonoriented traverse surveying technology may be used. The calculation methods and precision of nonoriented traverse are presented, and the application of nonoriented traverse in the survey of Guangzhou Metro is discussed. Conclusions drawn are as follows: 1) The error induced by direction changing of oriented boundary can be reduced by using nonoriented traverse. 2) The nonoriented traverse surveying method is an effective method, which has high precision in shield orienting. 3) The nonoriented traverse surveying method can improve the relative precision of control points in the breakthrough survey of running tunnel.

Key words: Guangzhou Metro, nonoriented traverse, survey precision