摘要： 本文分析了不同高度的大坝，在水、温度等荷载作用下，水平位移观测精度对大坝安全度计算结果的影响程度；并介绍几座混凝土坝各种观测方法所达到的观测精度。

Abstract: This article studies the degree of horizontal displacement observation accuracy influencing on the calculation result of dam safety factors under the water and temperature loading with different height dam. The author introduces the observation accuracy approached by several methods with the cases of 3 concrete dams.?