Effect of deformation processes on hydraulic efficiency in open drainages

Abstract

In agriculture based on irrigated farming, the role of drenage networks is important. The variability of seepage water in the season of irrigation and salt washing has a great impact on the technical condition of the collectors. As a result of the leakage of a large amount of groundwater into the drainage, the sidewalls of the drainage fall by sliding, and as a result, the slided soil fills the bottom, which causes a number of negative problems. The main construction parameter of open drainage is the depth and slope coefficient, which ensures the strength of side wall. When the problem was investigated, it became known that the drainage capacity and water transfer capacity decreased as a result of the deformation of the side slopes of the “CK-2-2” inter-farm collector. So, as you can see in the graphs, when the bottom of the ditch rises to 1.2 meters as a result of deformation, the width of the bottom of the drainage increases to 6 meters. Using Darcy’s formula for filtration flow, it was found that the - comparative seepage water in the drainage was reduced from 0.375 L/sec to 0.265 L/sec, i.e. a reduction of 41%. As a result, the depth of the water in the drainage should have decreased, but the depth of the water is reflected growth as reeds and similar plants grow on the bottom and sides of the drainage. According to the results of the calculation, it was found that water permeability of the drainage reduced by up to 30%.