基于数值模拟的泥石流危险性分区方法

Numerical-simulation-based debris flow risk zoning

由于泥石流运动方程研究和计算机技术的迅速发展使得基于数值模拟的泥石流危险性分区方法已成为泥石流危险性分区的主要方法。该方法也是这一领域最为有效的定量方法,并被大量应用于泥石流灾害评估、土地利用规划和灾害制图中。在分析泥石流运动数值模拟方法和根据模拟结果进行分区研究现状的基础上,指出了该方法在数值模型的建立、分区指标的确定以及指标分级中存在的问题,并针对这些问题提出了解决方法。

Numerical simulation, the most effective quantitative method for debris flow risk zoning, is becoming the main approach for debris flow risk zoning along with the development of computer technology and studies on debris flow motion equations and has been applied in hazards assessment, land use planning and hazards mapping. According to the analysis on the present researches on numerical simulation and risk zoning approaches, difficulties and problems are indicated in the numerical simulation of debris flow movement on the alluvial fan, the determination of the index for risk zoning and the classification method of the index. Furthermore, the methods of resolving these problems are presented.