数字滤波在地裂缝和地形变研究中的应用

Application of Digital Filter Theory in Study of Ground Fissures and Ground Vertical Deformation

运用数字滤波理论来区分西安地裂缝、地面垂直地形变活动量中构造活动变形量和释水固结压密变形量。结果表明，地裂缝活动时序中低频长周期成份占绝大部分，而地面垂直地形变活动时序中高频短周期成份占绝对优势。释水固结压密变形量约占总变形量的60％～90％。

In this paper, an attempt has been made to separate the tectonic active deformation from the total of Xi'an ground fissure and ground vertical deformation with digital filter theory after analysing their time series characteristics. The results indicate that the component of low frequency in the time series of the ground fissure is main, the component of high frequency in the time series of the ground vertical deformation occupies a dominant position, the deformation of consolidation and compression of the water-bearing system is about 60%～90% of the total deformation.