测绘通报 ›› 2018, Vol. 0 ›› Issue (8): 142-144.doi: 10.13474/j.cnki.11-2246.2018.0263

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Establishment of Control Network Outside New Yongshouliang Tunnel on Yinchuan-Xi'an High-Speed Railway

LI Jinxiang   

  1. The 12 th Bureau of China Railway, Taiyuan 030032, China
  • Received:2018-06-07 Online:2018-08-25 Published:2018-08-30

Abstract: This paper discussed the method to adopt high-precision GPS as the control network for long and large tunnels. So that the stability of the network structure of the control network outside the tunnel can be enhanced and that the tunnel piercing accuracy can be improved.

Key words: independent control network, establishment of the control network outside tunnels, accuracy analysis, piercing accuracy

CLC Number: