运用Voellmy模型方法模拟泥石流运动堆积动力过程  

Dynamical simulation of debris flow movement and accumulation based on Voellmy model

作　　者：陈伟 

机构地区：[1]广东省环境地质勘查院,广东广州510000

出　　处：《地质学刊》2015年第2期334-338,共5页Journal of Geology

基　　金：中国地质调查局项目"西南山区城镇建设地质灾害风险管制方法及示范"(1212010814015)

摘　　要：泥石流流体具有速度快、破坏力强的特征,严重威胁着山区城镇的建设、民众生命以及财产安全。如何针对泥石流的运动堆积过程进行模拟一直是泥石流研究的热点和难点。基于近似Voellmy解的连续介质理论,建立泥石流动力模型,采用数值模拟仿真的方法,以一典型的泥石流沟为研究实例进行分析,通过模拟泥石流运动、堆积的动力过程,分析其最大速度、压力、过流量、堆积高度以及堆积面积,为后期泥石流危险性评价区划及防治提供有力支撑。Debris flow is characterized by its rapid speed and strong destructive force, and it has posed a great threat to the development and construction of mountain towns and people life as well as property safety. At present, the simulation of the debris run-out has been a focus and a problem in the research of debris flow. Based on the proximate Voellmy solver, this work utilized the numerical stimulation method to analyze the whole process of debris flow movement and accumulation for a typical debris flow gulley, including maximum velocity, pressure, momentum, flow height and accumulation areas. This may support the hazard assessment and the prevention of debris flow.

关 键 词：泥石流 Voellmy模型 运动堆积过程 数值模拟 四川汶川 

分 类 号：P642.23[天文地球—工程地质学]