泥石流体是由固、液、气三相组成的流变体。泥石流体中的水通常是以结合水、吸附水和自由水状态赋存于流体中，而流体孔隙的大小比例不一，决定了水在泥石流体中的能量状态。黏性泥石流体中的附加孔隙压力可以悬浮92％左右的固体物质，它对泥石流高速、低坡减阻运动起着重要作用。

Debris flows are a rheological mixture composed by soid，water and air．Water in debris flows is endued with debris flows for situation of combined water,absorbed water and free gravity water．These endued condition and percentage Of different pore Can determine water energy condition in debris flows．About 92.2％ of all grain (by weight) is supported by excessive pore pressure in viscous debris flows．It play important role in for debris flow to reduce resistant motion．