基于高速铁路长大隧道平面控制测量关键技术研究与应用

Research and Application of Key Technology for Plane Control Survey in Long Tunnel of High Speed Railway

为提高长大隧道平面控制测量精度,确保隧道高精度贯通,避免因隧道横向贯通误差过大而调整线路造成较大的经济损失。经过仿真数据试验验证后,建立了一个长约9km的实地模拟网用于相关研究。在原GNSS网的基础上建立隧道独立控制网,研究隧道洞内导线边角控制网适用的网形和数据处理方法及困难条件下连续短边方位传递的测量方法,并开发出能连接全站仪通讯接口的导线测量软件来提高作业效率。总结形成了一套10km以内的长大隧道平面控制测量关键技术方案。经过多次实际应用,证明该关键技术方案是可行且可靠的。

In order to improve the accuracy of plane control of long tunnel,ensure the high precision of tunnel penetration and avoid huge economic losses caused by adjusting the line due to the large lateral penetration error of tunnel,this paper establishes a 9 km long field simulation network for relevant research after the verification of simulation data test.Based on the original GNSS network,a tunnel independent control network is established.The suitable network shape and data processing method of the side angle control network of the traverse in the tunnel are studied.The survey method of continuous short side azimuth transmission under difficult conditions is also studied.The traverse survey software which can connect the communication interface of the total station is developed to improve the operation efficiency.A set of key technology schemes for plane control survey of long tunnel within10 km are summarized and formed.After many practical applications,it is proved that the key technology scheme is feasible and reliable.