Abstract
During laboratorial study we have get data about mineral and granulometric composition, some physical and physico-chemical parameters of mudflow deposit, which made it possible to identify soil features in mudflows in Chukotka. Made a try to estimate influence this influence of these features on the formation of mudflow suspension, which is the transport substance of mudflow. In terms of structural rheological movement model, mostly cohesionless mudflow suppose to be formed within reviewed territory, in which main mass of water is in free state. However, laboratory investigations have shown high contain of fine-grained particles in samples of mudflow deposit, which is in aggregated state. When flooded, these particles saturate water flow with clay suspension that allows classification this flows as cohesive. The cohesion of mudflow mass is acquired by flows in the process of movement at the expense of aggregates destruction that leads to changing physical characteristics of the mudflow.
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