斜轴圆柱投影方法及其在交通工程中的应用研究

Study on Oblique Cylindrical Projection Method and Its Application in Traffic Engineering

我国目前普遍采用的是横轴圆柱等角投影,为避免投影差过大,一般进行分带投影,将投影差控制在一定的限度内。在某些交通工程项目中,对投影差要求十分严格,采用分带投影又会带来设计和放样过程中的困难。本文从地图投影原理出发,提出采用斜轴圆柱投影方法来解决此类交通工程的坐标系统的建立问题,有效地解决了投影差对此类工程的影响。

At present,inverse cylindrical equal-angle projection is usually used in China. In order to avoid too big projective difference,projection in zone is commonly conducted to control the projective difference within certain limit. In some traffic engineering projects,the requirements for projective difference is terribly strict,with some difficulties for the design and layout arising from the projection in zone.Based on the principle of map projection,a method that adopts oblique cylindrical projection to settle the foundation of coordinate system in traffic engineering project was put forward in this paper.The effects of projective difference on the engineering project is effectively reduced by the method.