Abstract
Using long-term
field-exploration studies and aerial and space photography, the erosion coefficient
values of mountain slopes in the water catchment
basins of
To establish the link
between the erosion coefficient and the degree of mountain slope damage use has been made of the scale of Ts. Mirtskhoulava
and R. Morgan, according to which the slope erosion class and the erosion
intensity have been determined, with account of the time factor.
In order to predict
channel processes in mudflow type rivers, a dependence
has been obtained on the basis of an analysis of the field-expeditionary
studies carried out in nature (1981-2005). This dependence permits calculation
of the maximum discharges of various provisions of turbulent mudflows, with
account of the diagnostic variable.
Using the theories
of probability and of risk, the types of the law of distribution describing the
eroded and accumulated sectors have been determined: the reliability of the
stability of the longitudinal river profile and corresponding risk are studied
for cases of separate happenings and synchronous impacts. The results obtained
allow precise prediction of channel deformations in mudflow-type rivers and effective implementation of engineering
ecological measures at the subsequent stage.
Keywords: debris flow, discharge, erosion coefficient, catchments area, river-beds, longitudinal profile, theory of reliability and risk.