高铁长大隧道洞内施工平面控制测量方法探讨

Discussion on the Plane Control Survey in High-speed Railway Tunnel

控制测量是隧道测量工作的关键基础,它直接影响到隧道的工程质量及贯通精度,而随着GPS测量技术的日趋成熟以及高精度电子水准仪的产生,使隧道洞外控制测量以及洞内高程控制量的精度都得到了有效保障。本文结合本公司承建我国西南某条高铁隧道施工过程中的实例,从测量方案制定及技术细节保障等方面,探讨提高高铁长大隧道洞内平面控制测量精度的方法。

Control survey is the key basis of tunnel measurement work. It directly affects the engineering quality and penetration accuracy of the tunnel. With the increasing maturity of GPS measurement technolo gy and the generation of high -precision electronic level, the accuracy of measurement outside the tunnel has been improved. This paper combines the examples of the company's construction of a high-speed rail way tunnel in southwestern China, and discusses ways to improve the measurement accuracy of the plane control in the high-speed rail tunnel from the aspects of measurement plan formulation and technical de tails.