立井垂球线投点几何定向误差分析

Error Analysis on Geometric Orientation with Plumb Line’s Projection Point in Vertical Shaft

矿井定向分为几何定向和物理定向两大类。针对矿井中的立井几何定向,探讨了投向误差精度制定的依据,分析了垂球线的投点误差和投向误差,给出了减少垂球线投点几何定向误差的措施。

The shaft orientation is divided into geometric orientation and physical orientation.In the light of geometric orientation in vertical shaft,this paper probes into the bases for determining the accuracy of orientation error,makes the analysis on plumb line＇s projection point error and projection direction error,and puts forward some measures for reducing plumb line＇s projection point error in geometric orientation.