兰勃特投影在东西向高速铁路中的应用研究

针对在东西向的高速铁路工程项目建设过程中,现今采用的高斯投影所能控制的范围小,需要建立较多投影带,投影带边缘变形大,各投影带间坐标转换复杂,不利于数据共享等突出问题,本文提出采用兰勃特投影的新方式。首先介绍切、割兰勃特投影的原理和坐标转换方法;其次通过分析高斯投影和兰勃特投影在郑徐高铁项目中的对比应用,得出兰勃特投影更适合东西向高速铁路工程坐标系统建设的结论。对类似线形工程项目具有一定的指导意义。

The Research of Lambert Projection in the Application of East-West High-speed Railway

In the process of east-west high-speed railway construction project,the Gaussian projection is faced with the problems of control area is small,needing to build more projection zones,large deformation of the edge projection zone,coordinate transformation is complex among different projection zones,and disadvantage of data sharing and preservation.Aiming to these problems,we get a new way of the Lambert projection.In the text,firstly we make a brief introduction of different Lambert projection and their coordinate transformation.Secondly by analyze the application of Gauss projection and Lambert projection in ZhengXu High-speed railway;we get the conclusion that Lambert projection is more precise in the east-west railway construction.The conclusion has a certain guiding significance to the similar linear project.