Abstract: The plane survey network of Dongfeng Hydropower Station in Guizhou Province was constructed in 1993. At first, there were six points in the network and now eight points contained. Nine-time observation results accumulated in 1997. The two points in the network were damaged in 1998 and produced a bad influence on the use of the network. This paper discusses the methods and steps of the coordinate location after the recovery of the two points,and gives an evaluation on the precision and survey efficiency of the methods.?

摘要： 贵州东风电站平面监测网始建于1993年，最初为六点网，后扩展成八点网，到1997年，已积累了九期观测成果。1998年，该网的两个网点遭损坏，直接影响到该网的使用。本文所述的是电站在修复该两点后，用以确定点位坐标的方法和步骤，并就其精度及监测效能，进行了评述。