基于GIS和Voellmy模型的泥石流运动堆积过程模拟

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发展建设、群众生命财产安全。如何针对泥石流运动堆积过程进行模拟一直是泥石流研究的热点和难点。本文基于GIS技术以及近似Voellmy解的连续介质理论，建立了泥石流动力模型，采用数值模拟仿真的方法，以一典型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 Run-out Process Simulation Based on the GIS Technology and Voellmy Model

Debris flow is characterized with rapid speed and strong destructive force, furthermore, it has posed a great threat to the development and construction of mountain towns and people life as well as property safety. At present, to analyze the debris run-out has been a hotpot and difficulty in the research of debris flow. Based on the GIS technology and the proximate Voellmy solver, and taking a typical debris flow gulley as example, this paper takes advantage of the numerical stimulation method to carry on the analysis for the whole process of debris flow movement and deposit, including max velocity, pressure, momentum, flow fleight and deposit area, in order to support the hazard assess and prevention of debris flow.