黄陵矿区井下垂直大气折光系数探讨
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摘要
本文以黄陵地区某矿井三角高程实测数据为例,用对向观测方法探讨了井下大气折光系数与相对高差之间的关系,得出井下高差对大气折光系数影响较大的结论,即当高差小于10m时,大气折光系数相对稳定;超过10m时,大气折光系数会激增;当高差达到20m后,大气折光系数又会趋于稳定。实验与分析表明:井下大气折光系数不宜都采用0.14,如在井下巷道相对高差较大时可考虑采用与实际情况更相符的1.55为好。
This paper takes the measured data of a certain trigonometric elevation in the Huangling area as an example,and discusses the relationship between the atmospheric refractive index and the relative height difference using the opposite observation method,and draws the conclusion that the underground height difference has a great influence on the atmospheric refractive index.When the height difference is less than10 m,the atmospheric refractive index is relatively stable;when it exceeds 10 m,the atmospheric refractive index will increase sharply;when the height difference reaches 20 m,the atmospheric refractive index will tend to be stable.Experiments and analysis have shown that underground atmospheric refractive index should not use 0.14,such as in the relatively large height difference in the underground roadway can be considered with1.55 which is more consistent with the actual situation.
This paper takes the measured data of a certain trigonometric elevation in the Huangling area as an example,and discusses the relationship between the atmospheric refractive index and the relative height difference using the opposite observation method,and draws the conclusion that the underground height difference has a great influence on the atmospheric refractive index.When the height difference is less than10 m,the atmospheric refractive index is relatively stable;when it exceeds 10 m,the atmospheric refractive index will increase sharply;when the height difference reaches 20 m,the atmospheric refractive index will tend to be stable.Experiments and analysis have shown that underground atmospheric refractive index should not use 0.14,such as in the relatively large height difference in the underground roadway can be considered with1.55 which is more consistent with the actual situation.
引文
[1]段恩新.复杂测区条件下精密三角高程测量技术的研究[J].石家庄铁道大学学报(自然科学版),2012,25(3):98-102.
[2]王凤艳,陶元洲.测区垂直大气折光系数的变化及因地选择大气折光系数的意义[J].测绘通报,2005,3(4):14-17.
[3]张正禄,邓勇,罗长林,等.精密三角高程代替一等水准测量的研究[J].武汉大学学报信息科学版,2006,31(1):6-8.
[4]刘新峰.大气竖直折光对三角高程测量影响因素的研究[J].东华理工大学学报(自然科学版),2016,39(5):166-168.
[5]罗三明.一种确定大气垂直折光系数的新方法[J].测绘通报,1995(4):33-36.
[6]潘松庆,章书寿.根据气温变化率进行三角高程测量的折光改正[J].河海大学学报,1999,27(5):12-16.
[7]徐晖.论三角高程测量中的大气折光影响[J].矿山测量,1994,3(2):35-39.
[8]刘念,盛新蒲.三角高程测量中大气折光影响的分析[J].测绘科学,2012,6(3):26-35.
[9]骆帝骧.浅析三角高程测量的“两差”影响[J].测绘与空间地理信息,2012,3(8):222-224.
[10]肖复何.分层区计算折光系数的模式之一[J].测绘学报,1988,5(2):135-137.
[11]王磊.三角高程测量在山区高程测量中的应用研究与精度分析[J].北京测绘,2013(4):48-50.
[12]于成浩,柯明,赵振堂.精密工程测量中全站仪三角高程精度分析[J].北京测绘,2006(3):26-28.
[2]王凤艳,陶元洲.测区垂直大气折光系数的变化及因地选择大气折光系数的意义[J].测绘通报,2005,3(4):14-17.
[3]张正禄,邓勇,罗长林,等.精密三角高程代替一等水准测量的研究[J].武汉大学学报信息科学版,2006,31(1):6-8.
[4]刘新峰.大气竖直折光对三角高程测量影响因素的研究[J].东华理工大学学报(自然科学版),2016,39(5):166-168.
[5]罗三明.一种确定大气垂直折光系数的新方法[J].测绘通报,1995(4):33-36.
[6]潘松庆,章书寿.根据气温变化率进行三角高程测量的折光改正[J].河海大学学报,1999,27(5):12-16.
[7]徐晖.论三角高程测量中的大气折光影响[J].矿山测量,1994,3(2):35-39.
[8]刘念,盛新蒲.三角高程测量中大气折光影响的分析[J].测绘科学,2012,6(3):26-35.
[9]骆帝骧.浅析三角高程测量的“两差”影响[J].测绘与空间地理信息,2012,3(8):222-224.
[10]肖复何.分层区计算折光系数的模式之一[J].测绘学报,1988,5(2):135-137.
[11]王磊.三角高程测量在山区高程测量中的应用研究与精度分析[J].北京测绘,2013(4):48-50.
[12]于成浩,柯明,赵振堂.精密工程测量中全站仪三角高程精度分析[J].北京测绘,2006(3):26-28.