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首页> 外文期刊>Fresenius environmental bulletin >RESEARCH ON MOVEMENT PROCESS AND CHARACTERISTICS OF DEBRIS FLOW UNDER DIFFERENT SLOPE CONDITIONS BASED ON NUMERICAL SIMULATION
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RESEARCH ON MOVEMENT PROCESS AND CHARACTERISTICS OF DEBRIS FLOW UNDER DIFFERENT SLOPE CONDITIONS BASED ON NUMERICAL SIMULATION

机译：基于数值模拟的不同边坡条件下泥石流运动过程及特征研究

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摘要

Debris flow has become one of the most serious geological disasters. It has the characteristics of large area and serious loss. The study of the movement process of debris flow is the precondition for the prevention and control of debris flow. In this paper, the Massflow debris flow numerical model is used, and the Voellmy resistance model is used to simulate the movement process of debris flow under two different slope shapes and five different slopes. The movement process and accumulation process of debris flow are analyzed, and different slope conditions are carried out. Analysis of the movement process of the debris flow. The results show that the channel-shaped slope shape can reflect the movement characteristics of the debris flow more than the slope-type slope shape. With the gradual increase of the slope, the energy of the debris flow fluid provided by the topography is further increased, and the maximum speed and the maximum distance of the rushing are further increased. Large, the area of its corresponding deposit increases, but the maximum thickness and volume of the deposit tend to decrease. This paper discusses the relationship between different slope factors and debris flow accumulation and provides a scientific basis for predicting debris flow accumulation under different slope topographic conditions, which will provide some help for the next step of debris flow geological disaster management and geological environment ecological improvement.
机译：泥石流已成为最严重的地质灾害之一。具有面积大，损失严重的特点。对泥石流运动过程的研究是防治泥石流的前提。本文利用质量流泥石流数值模型，利用Voellmy阻力模型模拟了泥石流在两种不同坡度和五个坡度下的运动过程。分析了泥石流的运动过程和堆积过程，并进行了不同的边坡条件研究。分析泥石流的运动过程。结果表明，槽形斜坡形比斜坡形斜坡形更能反映泥石流的运动特征。随着坡度的逐渐增加，由地形提供的泥石流流体的能量进一步增加，并且最大速度和最大冲刷距离进一步增加。较大时，其相应沉积物的面积增加，但是沉积物的最大厚度和体积趋于减小。本文探讨了不同边坡因子与泥石流堆积之间的关系，为预测不同边坡地形条件下泥石流堆积提供了科学依据，这为下一步泥石流地质灾害管理和地质环境生态改善提供了帮助。

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