滑坡活动强度与几何要素之关系探讨

在滑坡发展过程中，滑坡的稳定性必然在其几何形态上有一定的反映。本文通过对滑坡展布面积、厚度、体积、长宽比、高度（即前后缘高差）及平均坡度等几何要素与滑坡稳定性的关系进行统计分析，发现滑坡活动强度与滑坡规模、平面展布形态及其空间展布状态有如下统计规律，并对此进行了初步探讨：（1）在滑坡规模方面，较小规模滑坡的体积越小，较大规模滑坡的体积越大，滑坡稳定性越差。（2）从滑坡形态方面来看，滑坡形态从横展型→等轴型→纵展型变化，滑坡稳定性增大。（3）对于滑坡的空间展布状态，高度减小与平均坡度增大，滑坡稳定性变差。

A discussion on the relation between active intensity and geometry elements of landslide

No doult that stability of landslide must be directly reflected on its geometry shape during development of landslide. The author discovered the following statistic rules among active intensity and its scale, 2\|D and 3\|D spatial distribution of landslide after statistic analysis on the relation between stability and geometry elements of landslide such as landslide area, thickness, volume, ratio of length to width, height and average slope grade etc:(1)the smaller the volume of small scale landslide, or the larger the volume of large scale landslide, the less stable the land slide is. (2)the stability becomes better with the width(the length perpendicular to sliding orientation)decrease and length(the length parallel to sliding orientation)increase. (3)landslide active intensity increases with the height decrease and/or average slope grade increase.