堆积层滑坡位移矢量角的R/S分析——以新滩滑坡分析为例

R/S Analysis of the Displacement Vector Angle of Colluvial Landslide——Selecting Xintan Landslide as an Example

基于新滩滑坡位移观测资料,运用分形理论的R/S分析方法对滑坡位移过程中的位移矢量角变化规律进行了初步的研究,发现边坡位移矢量角的赫斯特指数H值随着边坡的失稳而呈明显的下降趋势,表明位移矢量角具有与滑坡稳定状态同步的动态变化过程,说明在滑坡预测预报过程中,位移矢量角是一个不可忽视的变量.

Based on the monitoring data of displacement which result from the Xintan landslide, this paper completes a study on the change of the displacement vector angle in the process of deformation by means of the R/S （Rescaled-range） analysis method of the fractal theory. It is found that the Hurst index of the displacement vector angle has a distinct trend of declining along with the gradual failure of slope. It is indicated that the displacement vector angle has a synchronous dynamic process with the state of stabilization of slope. The result shows that the displacement vector angle is an important variable in the prediction of landslide.