小空间始发超长盾构隧道联系测量方法
Connectional Measurement Method of Super-Long Shield Tunnel with Small Space to Start
王永1
作者信息
- 1. 中铁十四局集团有限公司 山东济南 250000
- 折叠
摘要
伴随我国城市建设飞速发展,盾构法施工因施工扰动小、机械化程度高等诸多优点,被普遍应用于铁路隧道中.由于盾构法施工隧道一次成型的特点,测量精度对工程整体质量影响较大,在盾构机始发井空间狭小、独头掘进距离长的条件下更难以进行较高精度的隧道控制测量.本文以某盾构隧道工程为例,针对上述不利条件下隧道控制测量设计和实施进行系统阐述,并对该测量方法定向精度进行理论预计.通过对实测联系测量成果数据的统计分析,对理论预计结果进行验证,证实了该方法的可行性和误差预计理论的正确性.
Abstract
With the rapid development of urban construction in China,shield construction is widely used in railway tunnels due to the advantages such as small construction disturbance and high degree of mechanization.Due to the characteristics of tunnel forming in one operation by shield tunneling method,the measurement accuracy has a great influence on the overall quality of the project,and it is difficult to carry out high precision tunnel control measurement under the conditions of narrow space of initial shaft of shield tunneling machine and long distance of single head excavation.Taking a shield tunnel project as an example,this paper expounds the design and implementation of tunnel control measurement method under the above conditions in detail,and theoretically predicts the directional accuracy that this method can achieve.Through the statistical analysis of the measured data,the theoretical prediction results are verified,which proves the feasibility of the method and the correctness of the error prediction theory.
关键词
铁路隧道/超长单向盾构掘进/小空间始发/联系测量/基线方位/误差预计Key words
railway tunnel/super-long unidirectional shield tunneling/starting from a small space/connection survey/baseline azimuth/deviation prediction引用本文复制引用
基金项目
中铁十四局集团有限公司项目(A类)(913700001630559891202239)
出版年
2024
NETL
NSTL
万方数据