摘要
根据南京长江第二大桥跨江高程测量 ,采用经纬仪倾角法施测。分析了近江面大气折光的特点 ,提出了能反映观测质量和环境状况的特征值Δ1,Δ2 ,δ进行控制 。
Based on the elevation measuring of across river of the Second Yangtze River Bridge in Nanjing city,in which the theodolite and the method of inclination are used,this paper analyzes the features of atmospheric refraction approached to the river.And the characteristic values Δ 1,Δ 2,δ are put forward to reflect the quality of observation and the condition of environment.These values are used to control the transmission of long distance elevation of across river in order to ensure the accuracy to be reached.
出处
《工程勘察》
CSCD
北大核心
2002年第4期48-50,59,共4页
Geotechnical Investigation & Surveying
