矿业权实地核查中GPS投影边长改正问题探讨

Independent Coordinate System Transformation of Mining Area Methods

在投影变形超过限度的矿区进行地质测量时,一般要建立矿区独立坐标系,目前常用的方法为椭球膨胀法。由于独立坐标系与国家坐标系坐标数值上存在差异,造成新的测量图件与早期地质图件不好衔接、用图不便等一系列实际问题。为了解决这些问题,本文提出了一种矿区独立坐标系的改造方法,并通过实例对比分析,认为这种改造方法是可以实施的。

In the geology survey of mining areas exceeding the limit of projection distortion,it is a general practice to build the independent coordinate system of the mining area,the common method at present is ellipsoid expansion.The difference in coordinate value between the independent coordination system and national coordination system results in problems such as poor cohesion between old and new maps and inconvenient map application.In order to solve the above problems,this paper puts forward a method of rebuilding mining area independent coordination system,and proves the effectiveness of the rebuilding.