土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (4): 500-503.

• 专题论述 • 上一篇    下一篇

降雨作用下滑坡运动轨迹分形特性研究

周 琦1，李荟芹2，朱海超1   

  1. （1.浙江华东建设工程有限公司，杭州 310030；2.云南省红河州水利水电勘察设计研究院，云南蒙自 661199）
  • 收稿日期:2021-05-26 修回日期:2021-07-25 出版日期:2021-08-31 发布日期:2021-08-20
  • 作者简介:周 琦（1980-），女，硕士，高级工程师，研究方向为岩土工程勘察设计。

Fractal Characteristics of a Landslide Movement Trajectory Under Precipitations

ZHOU Qi1, LI Huiqin2, ZHU Haichao1   

  1. (1.Zhejiang Huadong Construction Engineering Co., Ltd., Hangzhou 310030;
    2.Yunnan Honghe water resources and Hydropower Survey, design and Research Institute, Mengzi Yunnan 661199)
  • Received:2021-05-26 Revised:2021-07-25 Online:2021-08-31 Published:2021-08-20

摘要： 为了揭示诱发因素作用下滑坡变形的动态过程，基于分形理论研究了滑坡位移变化及其与降雨的作用关系。首先，根据现场监测数据分析滑坡变形情况；其次，借助分形维数计盒定理计算滑坡各监测点变形曲线分形维数；最后，通过研究期分形维数的变化规律探究滑坡运动轨迹的分形特性。结果表明：降雨作用下滑坡土体强度降低，变形加剧，滑坡运动轨迹分形维数变形趋势性增强，整体呈上升趋势。

关键词: 滑坡变形, 运动轨迹, 分形维数

Abstract: This paper presents the dynamic landslide movement trajectory under the action of potential triggering factors. Based on fractal theory, the trajectory of the landslide displacements and its correlations with the precipitations are systematically evaluated. Firstly, the landslide deformation was analyzed with support of the observed sliding monitoring data; Secondly, the fractal dimensions of the deformation curve at each monitoring point of landslide were analyzed by using the boxcounting theorem of fractal dimensions. Lastly, the fractal characteristics of landslide movement trajectory were explored through the variation of fractal dimensions during the study period. The results show that, under the influence of the precipitation, the shear strength of landslide soil decreases and the deformation increases. The deformation trend of fractal dimensions of the landslide movement trajectory increases and the overall trend is increasing.

Key words: Landslide Deformation, Movement Trajectory, Fractal Dimensions

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