在井下用经纬仪进行测角时的误差分析

Analysis on instrumental errors caused in measuring angles with the theodolite in the underground

测角精度是衡量经纬仪质量、性能的主要技术指标,同时也是判定测角成果质量的重要依据。在井下用经纬仪进行角度测量的误差来源一是仪器误差,这个是由仪器制造本身的误差;二是测角方法误差,是由于瞄准和读数不正确所产生的误差,因为瞄准和读数随测角方法不同而不同;三是外界条件所造成的误差,如井下湿度、温度、矿尘量、照明度和风速等变化因素。

The precision of the angular measurement is the main technology index of the quality and performance of the theodolite,and also the important basis on judging the quality result.In the underground theodolites are used to measure angles and errors are caused： the first are instrumental errors,which are caused by the instrument itself;the second are angle-measuring method errors,which are made due to incorrect aiming and reading mistakenly,because they varies with the different angle-measuring methods;the third are errors caused by external conditions,such as underground humidity,temperature,mineral dust and wind speed,and other lighting changeable factors.