沪蓉铁路运营期精密测量控制网重建及特点  

Reconstruction and Characteristics of Precise Survey Control Network for Operation period of Shanghai-Chengdu Railway

作　　者：夏朝龙[1] XIA Chaolong(China Railway First Survey and Design Institute Group Co.,Ltd.,Xi􀆳an 710043,China)

机构地区：[1]中铁第一勘察设计院集团有限公司,西安710043

出　　处：《铁道标准设计》2021年第5期75-79,共5页Railway Standard Design

摘　　要：沪蓉铁路存在多种互不兼容的控制测量技术标准,无法满足运营维护和提升改造要求,亟待重建基准统一、精度协调的精测网。为给类似运营期高速铁路精测网重建项目的方案设计与实施提供借鉴和参考,结合沪蓉铁路运营维护精测网重建工作,从统一控制测量技术标准、重建投影分带体系、融合控制网布设功能、优化网形设计、基于CPⅢ平面测量简化长大隧道洞内CPⅡ建网、让CPⅢ高程网兼顾线路普查性沉降监测功能、分区开展线路交点坐标相似转换等方面进行研究论述,实践经验和结论对类似既有高速铁路精测网重建工作具有借鉴、参考意义,有助于丰富和完善高速铁路运营维护测量技术体系。There are many incompatible control survey technology standards in Shanghai-Chengdu Railway,which can not meet the requirements of operation,maintenance and upgrading.It is urgent to rebuild a precise control survey network with unified benchmark and coordinated accuracy.In order to provide references for the scheme design and implementation of similar high-speed railway precise control survey network reconstruction projects,researches,based on the precise survey network reconstruction work of Shanghai Chengdu Railway,are conducted on the unified control network survey system,the reconstruction of projection zoning system,the integration of control network layout function,the optimization of net form design,the simplification of large tunnel CPⅡnetwork construction based on CPⅢplane survey,the supplemented general line subsidence monitoring function by CPⅢelevation network,and the similar transformation of the intersection coordinates of the lines in different areas.The practical experiences and conclusions can be references for the reconstruction of similar existing highspeed railway precise control survey networks,and help to enrich and improve the high-speed railway operation and maintenance survey system.

关 键 词：运营铁路 控制测量技术标准 投影分带 控制网优化 沉降监测 洞内CPⅡ 坐标转换 

分 类 号：P228[天文地球—大地测量学与测量工程] P224[天文地球—测绘科学与技术]