当前,国内各矿山已较多使用陀螺经纬仪进行矿井定向测量,以替代繁重的几何定向测量,它不仅可以少占井筒生产时间和减轻测量工作劳动强度,而且由于它具有较高的定向精度和加测陀螺边的灵活性,从而提高了井下平面控制网的强度;同时还可降低井下控制导线的等级,因而受到矿山测量人员的重视和欢迎。去年五月至七月,结合江苏省煤炭建设指挥部的工作需要在地面专门建立了试验用的固定点组成的导线网,使用徐州光学仪器厂生产 At present, all the mines in China have used the gyro theodolite to measure the orientation of mines instead of the heavy geometrical directional measurement, which can not only account for less production time and reduce the labor intensity of the measurement work, but also because of its high orientation accuracy and Measuring the flexibility of gyro edge, thereby enhancing the strength of the underground plane control network; at the same time can also reduce the level of underground control wire, which by mine surveyors attention and welcome. Last May to July, combined with the work of the coal construction headquarters in Jiangsu Province need to set up a special set of experimental fixed point ground wire network, the use of Xuzhou Optical Instrument Factory production