Dynamics of hydraulic resistance in the zone of constraint of the riverbed

Abstract

The article is devoted to the analysis of the dynamics of the morphometric parameters of the river channel and the hydraulic parameters of the flow under constrained conditions. The Kipchak hydraulic track located in the lower reaches of the Amu Darya River, constrained by the pontoon bridge, is characterized by intensive channel processes. The dynamics of the hydraulic resistance of the channel depending on the flow during the periods of observation in a confined section of the river has a wide range of 0.045 to 0.068, with a change in the roughness of the channel within 0.0195 to 0.065. The calculated values of the flow rates, taking into account the inhibitory effect of the river banks, gave a satisfactory agreement with the measured ones, the hydraulic resistance of the channel, depending on the value of this parameter, varied within 0.045 to 0.068 with the dynamics of the Chezy coefficient from 27 to 67 m0.5 / s

Method of obtaining pure organo-mineral fertilizer and its ecological investigation of the influence on soil fertility

“…The scientific data available in the world practice [7] give an idea of the design and operation rules of large-scale biogas plants for industrial use [8]. Scientists from the Institute of the Sun of the Academy of Sciences of Turkmenistan studied methods for obtaining biogas and manure fertilizers using bioreactors at biogas plants equipped with solar collectors, which process manure from livestock and poultry farms without waste [9,10]. When biogas is obtained by processing bird droppings, nitrogen in its composition leaks out, and this also requires a long time up to 90 days.…”