【摘要】 根据上海市长江隧道工程贯通处洞门中心坐标测量的实际情况,利用数学方法将空间三维的洞门钢环实测坐标拟合出三维方程,精确求取钢环中心的三维坐标。更多还原

【Abstract】 According to the actual case in the center coordinate survey of portal hole in shanghai Yangtze River tunnel through,a mathematic method is explored,which is fitting the three-dimensional equation after gaining the actual coordinate of steel ring in portal hole.The precise three-dimensional coordinates in the center of steel ring is obtained.更多还原