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cao yu ling sui dong guan tong ce liang di mian dao xian wang de fen xi yu gai jin
Pages: 38-41
Year: Issue:  1
Journal: Overview of the Earth

Keyword:  贯通测量导线网边角权配比方案选择;
Abstract: 根据水工隧洞贯通测量的特点,地面导线网布网方案中,应考虑地形条件并结合图形强度,以便合理选择节点,增加多余观测分量,使粗差易于查找,精度迅速得到提高。平差时角的权可根据导线环闭合差算得的测角中误差为初值,而边的权则应以各环组成的导线网,用其计算的纵向闭合差求出的测距精度,作为基础输入计算机,然后通过趋近计算直到纵横向误差比例匹配为好。进洞插点采用精密方法同样可以保证精度
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