THE PHENOMENON OF AN EPOSITIVE INCREASE IN THE DENSITY OF THE MURDER MASS – THE CONSEQUENCE OF ITS AMBIGUOUS DEPENDENCE ON THE SLOPE WAYS OF MOVEMENT
DOI:
https://doi.org/10.54668/2789-6323-2022-105-2-59-77Keywords:
debris flow, debris-flow mass, density, viscosity, plasticity, concentration, pressure, slope, discharge, volume, unambiguous (ambiguous) dependenceAbstract
The characteristics of each local volume of debris flow are continuously changing depending on the characteristics: a path of its movement (slope, width and roughness of channel), discharge, granulometric and mineralogical compositions of debris involved in debris-flow-formation, density, viscosity and plasticity of debris-flow mass, etc. Up to now, it believes that the debris-flow mass density depends unambiguously on the slope of path of a debris-flow. As a result of experimental and theoretical studies carried out at the Kazakh Research Hydrometeorological Institute (KazNIGMI), it was found that the course of the debris-flow process depends on the density of debris-flow mass. Identification of the ambiguity of the debris-flow mass density from the slope of the debris flow path led to the discovery of a natural phenomenon: an abrupt change of the density of debris-flow mass when the critical value of the slope of the debris flow path is exceeded (the Stepanov’s effect). Taking into account the ambiguity of the debris-flow mass density from the slope of the debris flow path is a key element in computing debris flow characteristics.
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