隧洞约束环境下大气折光对精密水准测量的影响  

Effects of atmospheric refraction on precision leveling under the condition of tunnel restriction

作　　者：李祖锋[1] 高建军[1] 鹿恩锋[1] 巨天力[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院测绘工程大队,甘肃兰州730050

出　　处：《测绘工程》2010年第2期71-74,共4页Engineering of Surveying and Mapping

摘　　要：研究黄河拉西瓦水电站一等水准网环线闭合差系统性偏大问题,结果表明,在拉西瓦具有一定坡度的交通隧洞内,大气折光显著,测量中需要采取措施以减小折光影响。Based on the study of large systemic circuit error of the first level of Laxiwa Yellow River Hydropower Station,the paper concluded that atmospheric refraction in traffic tunnel with certain slope was obvious in Laxiwa,and that measures should be taken to reduce the effects of refraction.

关 键 词：精密水准 隧洞 误差 折光差 

分 类 号：P224.1[天文地球—大地测量学与测量工程]