摘要
简要叙述了前方交会法确定竖井投点垂线的方法 。
This paper intreduces accuracy analysis of forward intersection determine shaft plumbing vertical and for shaft plumbing vertical error of point position or directional error carry through simple analysis.
出处
《地矿测绘》
2002年第3期30-31,共2页
Surveying and Mapping of Geology and Mineral Resources