摘要
在铁路等线性工程控制测量中,由于线路跨度大、高差变化大,其所带来的长度形变也就大。本文分析了长度变形的原因,介绍如何确定高程投影面。结合衢宁铁路勘测定界控制测量,对选择不同的中央子午线、高程投影面进行了详细分析,通过长度变形数据对比,建立适合线性工程需要的坐标系。
For linear engineering in engineering survey such as railway, longer span length and large changes of elevation will lead togreater length deformation. This article analyzes the reasons for the length deformation and how to determine elevation surface projec-tion plane. It provides detailed analysis on different choices of central meridian and elevation surface projection plane in Quning Rail-waybordering control survey, and builds appropriate coordinate system for linear engineering by comparing length de-formation data.
出处
《测绘与空间地理信息》
2017年第4期184-186,共3页
Geomatics & Spatial Information Technology
关键词
线性工程
长度变形
坐标系
抵偿投影面
高斯投影
linear engineering
length deformation
coordinate system
compensating projection plane
Gauss projection
