Debris flow prevention pattern in national parks ―Taking the world natural heritage Jiuzhaigou as an example

摘要

With the development of the ecological tourism, how to control debris flow in national parks becomes an urgent problem. The characteristics of prevention of the debris flow in the areas are systematically studied, and a scientific strategy is introduced for dealing with debris flows. In term of the activity attribute of the debris flow and objects protected in Jiuzhaigou, some methods are proposed to arrange the projects of hazard mitigation, and finally an approach is established to carry out the technology in the control of the debris flow scientifically, reasonably and feasibly. Integrating the aforesaid strategy with methods, the pattern of prevention and countermeasures of the debris flow has been theorized, in this way the mitigation hazards engineering is in harmony with the natural view and combined with the ecology. The prevention pattern of the debris flow in national parks is divergent from those in other areas such as towns, traffic lines, and farmland. After the successful application of the pattern in the Jiuzhaigou National Park, it effectively controls debris flows and achieves the expected target, such as conserving the landscape resource, sustaining ecological environment, and securing the visitors and residents.