长江葛洲坝于1981年6月关闸蓄水。为研究这一大型水库蓄水后的地形变规律,本文用坝区附近的水平形变网资料对该区形变特征及其与地震的关系作一探讨。一、形变资料处理测边网如图1。本文选用1980年10月、1981年11月和1983年5月三期观测资料进行分析。这三期资料中,第一期为蓄水前施测,后两期为蓄水后施测。三期资料均采用同型激光 The Gezhouba Dam closed its impoundment in June 1981. In order to study the deformation law after the impoundment of this large reservoir, this paper discusses the deformation characteristics of the area and its relationship with earthquakes by using horizontal deformation network data near the dam area. First, the deformation data processing edge network shown in Figure 1. This paper selects the observation data from October 1980, November 1981 and May 1983 for analysis. The three data, the first period before the impoundment test, the latter two periods after impounding. Three data are using the same type of laser