Self-organized criticality of the loose media slope disasters and its application in the protection engineering
HE Yue-lei, Lingkan Yao · The Chinese Journal of Geological Hazard and Control · 2005
The loose media slope disasters are frequent in China. For finding out the common property of the disasters and understanding the integral regularity, some kinds of sand-pile and non-uniform sand-gravel were designed as the generalization models of the loose media slope disasters. We researched evolvement of the sand-pile systems by the aid of the experiment.Self-organized criticality is one of the theories for explaining the characteristics of the disorder,nonlinear and complex systems. Fractal and flicker noise are the spatial and temporal characteristics of the system of self-organized criticality. The generalization models showed self-organized criticality in the experiments. The coast, the landslip and the debris avalanche are disasters of the loose media slope. We analyzed some instances of them. The result showed all of them have the characteristics of power-law distribution and self-organized criticality.Self-organized criticality is the common property of many of the loose media slope disasters.Based on these, some contrastive experiments were made. The experiments simulated the component of the loose media slope and protection engineering measures. And the experiments indicated the protection effects for the different engineering measures. Finally, the guiding actions of self-organized criticality for the engineering of the loose media slopes were researched relating the protection engineering measures such as blocking, anchoring, sprinkling and draining.