高海拔地区电力线路工程投影变形的控制

The Deformation Control of Power Line Projection in the High Altitude Area

在高海拔地区电力线路工程的建设中,地形起伏较大或者东西走向跨度较大,投影变形是一个不可避免的问题。如采用常规国家坐标系统建立控制网,其长度变形不能满足施工控制网精度要求,会对电力工程施工造成比较大的影响。因此合理评价分析及处理长度投影变形对坐标成果的影响,建立合适的高海拔地区的测量控制网,已成为这个区域工程控制网的一项重要内容。本文论述了高海拔地区电力线路工程中投影变形原理及控制方法。

In the construction of power line project in high altitude area, some may cross a zone, with two or even more, the projection deformation is an inevitable problem. If the conventional national coordinate system is adopted to establish the control network, the length deformation can't meet the requirement of the precision of construction, it must have effects on the electric power engineering construction. Therefore, the analysis and evaluation of projection deformation and establishing a suitable measurement control network an important content of regional engineering. According to power line project in high altitude area, this paper discusses the principle and control method of projective deformation.