滑坡活动时空分布的容量维(D_0)特征及其工程地质意义

THE CAPACITY DIMENSION CHARACTERISTICS OF THE TEMPORALAND SPATIAL STRUCTURE OF LANDSLIDES ACTIVITIES AND ITSENGINEERINGGEOLOGICAL SIGNIFICANCE

据分形理论，以西藏樟木地区滑坡活动为例，系统地研究了滑坡活动时空结构的容量维（Ｄ０）特征。结果表明，区域性滑坡活动时空结构的分维在急剧变化阶段同滑坡活动的高潮期相对应。滑坡活动降维现象的存在，在某种意义上也许意味着滑坡系统的失稳和滑坡活动的产生。探讨了分维的工程地质意义。

Taking the Zhangmu area of Tibet in China as an example,the capacity dimension features of the temporal and spatial structure of landslides activities are systematically studied based on fractal theoryThe results show that a sudden variational stage of capacity dimensions (D0) of the temporal and spatial distribution of regional landslides activities coincides with the climax period of landslides activitiesPhenomenon of fractal dimension dropping and its sudden variation probably imply the loss of stability of landslide system and formation of landslide activity in a certain significanceThe engineeringgeological significance of fractal dimension is discussed