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工程监测网中,如何判定网点的稳定性,是变形观测资料分析中的重要问题。本文通过对多期的观测资料,选用不同的平差方法,由平差结果的统计,检验分析,逐步地选取拟稳点,在秩亏自由网平差的基础上,通过2～3次拟稳平差,完全可以真实地反映监测网点位的变形信息,这是一种简便、可行的稳定性分析的方法。文中还画出了各观测周期平差结果的矢量图。文章最后提出了监测网布设、平差和稳定性分析的基本原则。
Engineering monitoring network, how to determine the stability of the network is an important issue in deformation observation data analysis. Based on the observation data of multiple periods, different adjustment methods are selected, and the statistic and test analysis of the adjustment results are used to select the stable points gradually. Based on the adjustment of the rank-deficit free network, Stable balance, can truly reflect the deformation of the monitoring network location information, which is a simple and feasible method of stability analysis. The article also draws a vector diagram of the results of the observation period adjustment. Finally, the article puts forward the basic principles of monitoring network layout, adjustment and stability analysis.