境外地质勘查测量坐标系统选择——以津巴布韦某矿区为例

Choice of measuring coordinate system for overseas geological exploration:A case study of a mining area in Zimbabwe

本文论述了境外地质勘查项目工作初期矿区测量工作坐标系统的选用问题,简要介绍了坐标系统相关概念及其示例,并从工作实际出发以津巴布韦A矿区为例介绍了该矿区的测量工作史及其所沿用的测量坐标系统及津巴布韦国家现行坐标系统,并分析了在该区近期地质勘查活动所采用的坐标系统情况及其存在的问题,结合矿区历史资料研究分析提出了在矿区的下步勘查工作中应沿用原矿区独立坐标系统的建议。该分析建议对境外,尤其境外老矿山深边部找矿项目初期的测量系统选择具有借鉴意义。

The paper discusses the selection of coordinate systems for surveying work in mining areas at the beginning of geolog⁃ical exploration projects abroad,and briefly introduces the commonly used coordinate systems,taking a mining area in Zimbabwe as an example,the survey history of this mining area,the survey coordinate system used and the current national coordinate system in Zimb⁃abwe are introduced,it also analyzes the coordinate system used in the geological exploration activities in the area and the existing problems,based on the research and analysis of the historical data of the mining area,this paper puts forward the suggestion that the independent coordinate system of the original mining area should be used in the next exploration of the mining area.It has a good guid⁃ance and reference significance for the selection of surveying system in the initial stage of deep and border prospecting projects in over⁃seas old mines.