根据野外泥石流观测资料 ,分析了泥石流掺气与降粘减阻现象 ,建立了泥石流掺气量与流速的经验公式 ,并根据泥浆掺气降粘减阻的试验 ,揭示了泥石流掺气降粘减阻机理 ,提出了泥石流屈服应力与气体含量及固体浓度的经验公式。本文对解释泥石流减阻 ,预估泥石流流变特性有重要意义。 According to the observation data of debris flow in the field, the aeration and viscosity reduction drag reduction of debris flow are analyzed, and the empirical formula of the aeration volume and flow velocity of the debris flow is established. According to the test of slurry viscosity reduction and drag reduction, Mechanism, proposed debris flow yield stress and gas content and the empirical formula of solid concentration. This article is of great significance in explaining debris flow drag reduction and predicting debris flow rheology.