测角网代替边角网在大坝外部控制网中的应用分析

Application and Analysis of Triangulation Network Instead of Triangulateration Network in Dam External Control Network

简述了测角网和边角网的可靠性指标及其算法。大坝外部控制网的监测精度要求高,外业工作量大,以某大坝的外部控制网观测为应用实例,采用测角网代替边角网,并从精度、可靠性以及效率上进行对比分析。结果表明,测角网相比于边角网,减少了作业时间和劳动力,具有一定的优越性,在工程实践中具有应用价值。

The reliability indexes and algorithm of triangulation network and triangulateration network are introduced. Based on triangulation network＇s assessment in adjustment measurement precision, reliability and the measurement efficiency compared with triangulateration network. This method is applied in the external control work of a dam which solve the problems of high precision requirement and heavy workload. The result shows that triangulation network has certain superiority of reducing the operating time and labor and it has great application value in engineering practice.