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泥石流龙头的高度反映了泥石流的规模,是防治工程的重要参数之一。陡峻的地形、大量松散固体物质、丰富的水源构成了泥石流发生的三大要素,同时也是影响泥石流龙头高度的重要因素。通过采用均质沙及宽级配沙进行水槽实验,探究泥石流运动过程中龙头高度与沟道物质级配、流量、坡度之间的关系,提出泥石流龙头高度随流量、坡度、平均粒径、细沙含量的增加,呈先上升后下降的趋势。利用回归分析方法,采用水流功率的概念,建立了泥石流龙头高度计算模型,并采用其他科学家的试验数据进行了验证,可为预测不同条件下泥石流规模提供科学依据。
The height of the debris flow faucet reflects the scale of the debris flow and is one of the important parameters of the prevention and control project. Steep terrain, a large number of loose solid material, rich water resources constitute the three major debris flow occurs, but also affect the height of debris flow faucet an important factor. Through the experiment of the flume using the homogeneous sand and the wide graded sand, the relationship between the faucet height and the grading of material, flow rate and gradient in the debris flow is explored. The height of the debris flow faucet with the flow, slope, average particle size, fine Sand content increases, the first upward trend, then downward trend. Using regression analysis method, the concept of water flow power was used to establish the height calculation model of debris flow faucet. The model was verified by the experimental data of other scientists, which could provide a scientific basis for the prediction of debris flow under different conditions.