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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。
According to the fractal theory, taking the landslide activity in Zhangmu area of Tibet as an example, the capacity dimension (D0) features of the space-time structure of the landslide activity are systematically studied. The results show that the fractal dimension of spatio-temporal structure of regional landslide activity corresponds to the climax of landslide activity at the stage of rapid change. The existence of the phenomenon of dimensionality reduction of landslide activity may mean, in a sense, the instability of landslide system and the occurrence of landslide activity. The engineering geological significance of fractal dimension is discussed.