刘家峡主坝为混凝土重力坝。最大坝高为147米。坝内在不同高度设有六层廊道。本文分析的水平位移测点即设于1660廊道。1660廊道水平位移是用小角度视准法如波带板激光准直法。本文对观测资料,用回归方法做了分析,并利用分析结果作了位移预报,预报精度高。对整个工作过程作者谈了自己的看法。 Liujiaxia main dam is a concrete gravity dam. The maximum dam height is 147 meters. Dam at different heights with six corridors. The horizontal displacement measuring point analyzed in this paper is located at 1660 corridor. 1660 Corridor horizontal displacement is a small angle of sight method such as wave plate laser alignment method. In this paper, the observed data are analyzed by the regression method, and the displacement prediction is made by using the analysis results, so the forecasting accuracy is high. The author of the work process talked about his own views.