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本文通过室内槽子试验来观察和分析稀性泥石流阵性的形成机制。试验表明，稀性泥石流阵性的起因首先决定于流域内形成的原始出流过程。同时，运动过程中巨砾向龙头处集聚和泥石流体中液相介质向不饱和的床面堆积层的渗透流失，是促进龙头发展的二项重要因素。这二种作用使泥石流龙头部的固相浓度增大，粒径变粗，运动阻力增大，而使龙头壅高发展。本文根据龙头处粒经、浓度、阻力的变化来探讨龙头高度比正常流深增长幅度的计算方法。
In this paper, through the indoor tank test to observe and analyze the forming mechanism of dilute debris flow matrix. Experiments show that the origin of the thin flow debris flow is first determined by the original outflow process in the basin. At the same time, the accumulation of boulders in the faucet during the movement and the infiltration loss of the liquid medium in the debris fluid into the unsaturated bed buildup layer are two important factors to promote the development of the faucet. These two kinds of roles make the solid phase concentration of debris flow head increases, the particle size becomes coarse, the exercise resistance increases, leaving the faucet high development. This article based on the faucet at grain size, concentration, resistance changes to explore the faucet height than the normal flow rate of growth of the calculation method.