Determination of the measure of deformation of alluvial channels

Abstract

The number of floods per year for the investigated channel with a drainage area of 0.3 km 2 during the period from 1972 to 1983 varied from 7 to 44 (Fig. 2). The thickness of the moistened loam crust reached i0 mm, and the calculated depth of erosion of the channel during the i0 years was 0.67 m. Under prototype conditions, erosion of the channel varied within 0.40-1.10 m. In the calculations the coefficient m was assumed equal to i. By varying this coefficient, which takes into account the effect of various factors -intermittent work of the channel, presence of suspended colloidal and bottom-corroding sediments, vegetation, sinuosity, etc. -we can obtain complete agreement of thecalculated values and values measured on site. LITERATURE CITED