地铁盾构隧道洞门钢环圆心坐标的精确测定  

Accurate Surveying of Center Coordinate of Circle of Subway Shield Tunnel Gateway Steel Ring

作　　者：贾志强[1] 

机构地区：[1]天津市勘察院,天津市红旗南路428号300191

出　　处：《测绘信息与工程》2011年第2期31-33,共3页Journal of Geomatics

摘　　要：给出了测定与计算钢环圆心坐标和半径的方法,按照最小二乘原理进行求解,并根据实际数据进行了验证和分析,实现了地铁盾构隧道洞门钢环圆心坐标的精确测定。The method of the subway shield gateway steel ring considered to a circle of the solid space is applied.The process of measuring and calculating the center coordinate and the radius of the steel ring circle is analyzed.The center coordinate of the steel ring circle can be measured accurately.

关 键 词：三维坐标 球面方程平差模型 平面方程平差模型 

分 类 号：P258[天文地球—测绘科学与技术]