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将大坝测值序列看成是一由不同频率成分组成的数字信号序列，采用数字滤波技术从数字信号中滤出时效分量，这是一种新方法．该法在分析太平哨大坝５号测点的水平位移中取得了一定的效果．
It is a new method that the dam measurement sequence is regarded as a digital signal sequence composed of different frequency components and the digital filtering technique is used to filter out the aging components from the digital signal. The method has obtained certain effect in analyzing the horizontal displacement of Taiping Whistle No.5 measuring point.