高速铁路轨道基准网测量与数据处理新方法

Study on a new method of surveying and data processing based on track reference network of high-speed railway

高速铁路轨道基准网在我国工程测量领域是个新生事物,最近几年才从德国引进。本文在学习德国测量技术的前提下,结合这几年在我国的应用情况,在分析总结其优缺点的基础上,提出与德国方法完全不同的、具有自主知识产权的CPⅣ网测量与数据处理的新方法。新方法中采用13 m间隔布设CPⅣ点,CPⅣ点采用强制对中标志,采用构网法进行CPⅣ平面网的自动测量,根据中视法的高差构建具有多余观测的CPⅣ高程网,对CPⅣ平面网和CPⅣ高程网进行严密间接平差和验后精度评定。新的CPⅣ网测量精度和测量效率更高,数量处理理论更严谨。观测实验结果表明:本文提出的新方法理论严谨、切实可行,值得推广应用。

The track reference network of high - speed railway, imported from Germany in these years, is a new- born thing in the field of our national engineering measurement. Under the premise of learning Germany measur- ing technique and combining the application of it in our country these years, on the basis of the analysis of sum- marized its advantage and disadvantages, a new method of surveying and data processing for CPⅣ network was proposed, which is completely different from the Germany method and has independent intellectual property rights. In this new method, CPⅣ points were laid every 13 m. It uses forced centering sign and network -con- structed methods to measure plat network of CPⅣ automatically. According to the height differences of the mid sight method, the CPIV vertical network with redundant observations was conducted. This new modified CPⅣ network has better measuring precision, higher measuring efficiency and more precise data processing theory, af- ter carrying out the rigorous indirection adjustment and a posteriori precision evaluation on CPⅣ horizontal net- work and CPIV vertical network. The observing experimental results show that the new method proposed in this paper is theoretically rigorous, practical and worth popularization and application.