泥石流动力过程及沿程侵蚀研究综述

研究泥石流的动力过程可以反演泥石流灾害的发生和发展过程,便于人们认识灾害的形成规律和特征。首先介绍了国内外泥石流动力模型,包括以Bingham模型、Bagnold膨胀流模型和库伦颗粒流模型为主的单流体模型和多流体模型,然后对泥石流动力过程数值模拟进行了梳理与分析,提出数值模拟中需要注意的问题,特别分析了泥石流沿程侵蚀作用在泥石流动力过程研究中的重要作用。最后,提出了泥石流动力过程研究存在的问题及发展方向。以期为泥石流动力过程的深入研究及防灾减灾提供一定的指导与借鉴。

Reviews on research of debris flow kinetic process and on-way erosion

The research on debris flow kinetic process can inverse the occurrence and development process of debris flow disaster and it is conducive to understanding the disaster forming regularity and characteristics. Some kinetic models for debris flow at home and abroad are summarized in this paper, including single-fluid (the Bingham model, the Bagnold model and the Coulomb grain model) and multi-fluid models. In addition, the research on numerical simulation for debris flow kinetic processes is also listed and some problems needed to pay attention are mentioned. Furthermore, the important role of on-way debris flow erosion is especially analyzed. Finally, the development prospect and research direction of debris flow kinetic process are discussed. The research can provide some guidance and reference for further research on debris flow, prevention and reduction of natural disasters.