兰渝铁路兰州至广元段精密工程控制测量技术体系及特点

兰渝铁路精密工程控制测量技术体系的建立贯穿了我国铁路精密工程控制测量标准从建立到逐步完善的全过程。为给类似铁路项目测量方案的设计与实施提供参考和借鉴,结合兰渝铁路兰州至广元段建立的精密工程控制网技术体系,从全线统一的"三网合一"的测量技术体系、基于CGCS2000的平面坐标基准、工程独立坐标系、符合工程实际的水准基点平差方案、地震对测量控制网造成影响的评估、长大隧道洞内CPⅡ控制网建网及其分段测量方法等方面进行研究和论述。研究结论及实践经验对于丰富和完善铁路精密工程控制测量标准具有一定意义。

The Precise Control Survey Technology System and its Characteristics for Lanzhou to Guangyuan Line on Lanzhou-Chongqing Railway

The establishment of precise control survey technology system for Lanzhou-Chongqing Railway runs through the whole process from the establishment to the gradual improvement of the precise control survey standards for railways in China. In order to provide references for the design and implementation of similar railway project surveying schemes, the precise control survey technology system and its characteristics for railways are systematically researched and presented in terms of unified control survey technology system of three control networks integration over the whole line, plane coordinate datum of CGCS2000, independent coordinate system of engineering, adjustment scheme of height control network in line with the actual situation of the project, evaluation of the impact of earthquake on the survey control network, and establishment of CPⅡcontrol network in long tunnels and sectional measurement method, based on the precise control survey technology system for the line from Lanzhou to Guangyuan on Lanzhou-Chongqing Railway. The research conclusion and practical experience have certain significance for enriching and improving the precise control survey technology standards for railways.