轨道高程控制网的优化设计  

Optimization design of CPⅢ elevation control network

作　　者：刘定威 范东明[1,2] 何思源[1,2] 朱宏[3] 

机构地区：[1]西南交通大学地球科学与环境工程学院,成都610031 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,成都610031 [3]四川省遥感信息测绘院,成都610100

出　　处：《测绘科学》2016年第9期152-158,共7页Science of Surveying and Mapping

基　　金：长江学者和创新团队发展计划项目(IRT13092)

摘　　要：针对常规水准测量存在效率不高、高程点精度不均匀等问题,该文分析了《高速铁路工程测量规范》(TB10601—2009)中介绍的两种CPⅢ高程控制网测量方法——德国中视法和中国矩形法的特点及其在实践中的应用,在此基础上提出了外业测量效率更高的新矩形法、单程矩形法和双程矩形法,通过对3种方法的相邻点高差中误差和每千米高差全中误差的估算以及实验验证了这3种方法不仅能满足现有的高铁规范要求,而且效率更高,可以成为CPⅢ高程控制网的建网方法;证实双程矩形法更适合用于工期较为宽松的CPⅢ高程网的建网测量,新矩形法和单程矩形法适用于工期紧张的CPⅢ高程网的复测。This paper analyzed the characteristics of two CP Ⅲ elevation control network measurement methods, namely, German intermediate sight method and the China rectangular method recommended in the High-speed Railway Engineering Survey （TB10601--2009） and their application in practice, based on this consideration, proposed three more efficient electronic level CP Ⅲ elevation network measurement methods, namely, new rectangle method, single rectangle method and double rectangle method. By estimating the mean square error of height difference of adjacent points and the whole mean square error of per kilometer height difference and testing in engineering practice, it was confirmed that the three methods could not only meet the requirements of the existing high-speed railway engineering surveying specifica tions, but also be more efficient than the rectangle method, thus three methods could be chosen in the CP Ⅲ elevation control network construction as： the double rectangle method would be more suitable for the first measurement of CP Ⅲ elevation control network measurement because of the relatively loose time, and the new rectangle method and single rectangle method would be more suitable for the repeated meas- urement because of lacking of time.

关 键 词：新矩形法 单程矩形法 双程距形法 高程控制网 精度估计 

分 类 号：P221[天文地球—大地测量学与测量工程]