Critical flow velocities in cohesive saline soils

Abstract

The article discusses the issue of determining non-erosion velocities for cohesive saline soil at the bottom and slopes of canals. Based on the formulas of Ts.E. Mirtskhulava for the determination of non-eroding velocities of water flow in cohesive soils, equations for determining non-eroding velocities for cohesive saline soil are proposed. A brief technique for conducting laboratory experiments and modeling of saline soil is presented. Based on the obtained data of laboratory experiments, the dependences for determining the non-eroding velocities of the water flow in the channels of the cohesive saline soils are obtained.

Measures to reduce negative effects of waste using the Amu-Bukhara machine channel

“…Analysis of the data obtained from the measurement of the dimensions of the waste shows that the thickness of the main part of the mouthpieces is from 20 mm to 60 mm (49%) (Table 1) and their length is from 201 mm to 600 mm (57%). In addition, the degree of clearance of the nozzles will also depend on the installation angle of the waste [10][11][12][13][14]. The data obtained on the ABK-2 channel show that the amount of debris accumulated in front of the bars per day is in some cases 350-500 kg.…”

Spatial problem of water distribution in open channels

“…The slope of the main channel is expressed in terms of the level of the independent surface. The water consumed by the main channel 2 Q after the weir can be determined from formula (7) when the width  and 2 y of the weir are known [9].…”