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本文提出了把组成成分复杂的泥石流体划分成浆体介质和固体颗粒两大部分的结构模式,并提出了如何划分此两大部分的颗粒粒径界限的建议.然后,对浆体部分的流变特性进行了试验研究.从试验结果建立了描述浆体掺入粗颗粒后泥浆体流变参数变化的半经验关系.掺入颗粒后的新混合体的刚度系数可以表示为同时,绘制出了不同浓度下浆体屈服切应力的变化曲线.试验还发现.不仅是粒径小于0.005毫米的粘粒组成的泥浆体属宾汉型,有屈服切应力,而且大于0.005毫水的其它各级土粒组成的浆体,当浓度达到一定的数值后,也呈现有屈服切应力.这可能由于颗粒间直接接触相互摩擦的结果.
In this paper, we propose to divide the debris flow fluid into two parts: the slurry medium and the solid particles, and put forward the suggestion on how to divide the two parts of the particle size limit.Then, The semi-empirical relationship between the rheological parameters and the rheological parameters of slurries after the slurries are incorporated into the coarse particles is established from the experimental results.The stiffness coefficient of the new mixture after the particles are incorporated can be expressed as The results show that not only the slime composed of clay with particle size less than 0.005 mm is bingham type, shear stress with yield stress, and the other classes of soil above 0.005 milliliters When the concentration reaches a certain value, there is also yield shear stress, which may be due to the direct contact between particles rubbing each other.