摘要
高铁工程、公路工程、水利水电工程、油气输送等线性工程控制测量过程中,为满足相关测量规范要求选择建立平面坐标系的方法有很多,选择中央子午线和投影面的方法有很多,合理选择最优化的坐标系是保证工程质量的前提,本文通过两个公路项目实例,阐述了基于投影变形特点和规律优化选取独立坐标系的方法,避免建立多个坐标系为设计施工带来的不利影响。
In the control survey process of linear projects such as high-speed railway project,highway project,water conservancy and hydropower project and oil and gas transmission,there are many methods to select and establish plane coordinate system in order to meet the requirements of relevant survey specifications,and there are many methods to select central meridian and projection plane.Reasonable selection of optimized coordinate system is the premise to ensure project quality.Through two examples of highway projects,This paper expounds the method of optimizing the selection of independent coordinate system based on the characteristics and laws of projection deformation,so as to avoid the adverse impact of establishing multiple coordinate systems on design and construction.
作者
杨宝宏
YANG Baohong(China Nuclear Industry Group Surveying and Mapping Institute Company Limited,Xi’an 710024,China)
出处
《城市勘测》
2022年第4期135-138,共4页
Urban Geotechnical Investigation & Surveying
关键词
线性工程
投影
变形
中央子午线
坐标系
linear engineering
projection
deformation
central meridian
coordinate system
