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隧道建设(中英文) ›› 2023, Vol. 43 ›› Issue (1): 112-118.DOI: 10.3973/j.issn.2096-4498.2023.01.012

• 研究与探索 • 上一篇    下一篇

特长引水隧洞洞内横向贯通精度仿真计算和分析

杨惠1, 高兵2 *, 谢先武2, 刘成龙1   

  1. 1. 西南交通大学地球科学与环境工程学院, 四川 成都 6117562. 中铁十一局集团第五工程有限公司, 重庆 400037)
  • 出版日期:2023-01-20 发布日期:2023-02-16
  • 作者简介:杨惠(1997—),男,江西玉山人,西南交通大学测绘科学与技术专业在读硕士,研究方向为精密工程测量。Email: 3475832759@qq.com。*通信作者: 高兵, Email: 155114418@qq.com。

Simulation Calculation and Analysis of Transversal Penetration Precision in SuperLong WaterDiversion Tunnel

YANG Hui1, GAO Bing2, *, XIE Xianwu2, LIU Chenglong1   

  1. (1. Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, Sichuan, China; 2. China Railway 11th Bureau Group Fifth Engineering Co., Ltd., Chongqing 400037, China)
  • Online:2023-01-20 Published:2023-02-16

摘要: 为解决特长引水隧洞洞内带状平面控制网精度难以提高、横向摆动和贯通误差大等问题,结合新疆某特长引水隧洞洞内平面控制测量的实际情况,设计一种混合固定测站和自由测站观测值的隧道洞内平面控制测量新网形。首先,利用计算机模拟仿真的方法生成该平面控制测量网形的模拟观测值,经过相应处理可以估算出隧道洞内横向贯通误差; 然后,按照设计网形对该引水隧洞洞内平面控制网进行实际测量。实测结果表明,采用该网形观测得到的洞内平面控制网,各项精度指标均能满足隧道二等要求,并且根据实测数据估算的洞内横向贯通精度与仿真计算结果较为接近,从而验证了所采用的仿真计算方法用于估算隧道洞内平面控制网精度的可行性和可靠性。

关键词: 特长隧道, 横向贯通中误差, 自由测站, 仿真计算

Abstract:

A case study is conducted on a superlong waterdiversion tunnel in Xinjiang, China, to address the many disadvantages of the current plane control network, such as low precision, large lateral swing, and penetration error. A novel plane control measurement network is designed based on observations from fixed and free measurement stations. Computer simulation is used to generate simulated observation values for the network, and the transverse penetration error in the tunnel is estimated after processing. The designed network is then used to measure the actual plane control network in the tunnel. The results show that the precision indices of the tunnel plane control network obtained by the recommended network can meet the secondary requirements of the tunnel, and the precision of transverse penetration estimated from the measured data is close to the simulation results, validating the feasibility and reliability of the simulation calculation method in estimating the precision of the plane control network in a tunnel.

Key words:  , super-long tunnel, root mean square error of transversal penetration, free station, simulation calculation