摘要
在进行矿井井筒的贯通和相邻矿井间各种巷道的贯通等生产活动中都需要计算子午线收敛角。在北京54和西安80坐标系下,子午线收敛角的值有所不同,根据分析及数据验证表明,在徐州地区,可用子午线收敛角的简化公式计算值代替精确公式的计算值,且不同坐标系统下的差异所带来的贯通误差可以满足限差的要求。
Making the mine wellbore through and the adjacent mine roadway heading through are necessary to calculate the meridian convergence angle. The meridian convergence is different in 1954 Beijing coordinate system and the 1980 national geodetic coordinate. For Xuzhou area, can use the simplified formula of the meridian convergence angle instead of the calculated value of accurate formula,which has been demonstrated by examples. The through error caused by the difference of meridian convergence angle can satisfy the measurement requirements of through survey.
出处
《煤炭技术》
CAS
北大核心
2016年第4期105-107,共3页
Coal Technology
基金
江苏高校优势学科建设工程项目(SZBF2011-6-B35)
关键词
子午线收敛角
不同坐标系
简化公式
贯通误差
meridian convergence angle
different coordinates
simplified formula
through error
