泥石流阵性流和触变唯象模型的探讨

泥石流体的触变性可以较好地展示泥石流的阵性流和冲淤变化机理，泥石流触变滞后环（下降段）具有促进泥石流阵性流产生的作用。本文首次用实验方法探讨了泥石流浆体的触变唯象模型η＝η∞／ｔｃγ＋η∞。该触变模型展示了定态粘度（η）、剪切速率（γ）和滞后环模型参数关系，并与试验结果相吻合。它为泥石流防治提供了确切参数。

RESEARCH ON SURGE FLOWS AND THIXOTROPY MODEL IN DEBRIS FLOWS

Debris flow thixotropy is the essence of mechanism of surge in debris flows.The detained encircle (t doun ) of debris flow thixotropies promotes the occurrence of large surge.This study is the first time to inquire into the debris flow thixotropy model by experimental method.The model revealed the relationship between viscosity,stress rate and modeling parameters and coincides well with the experimental results.It gives a base for debris flow control.