[Filtration calculation of the advanced columns - absorbers]
2008
Makoed, V.M., National Academy of Sciences. Scientific and Practical Center for Arable Farming (Belarus). Institute for Land Reclamation
New principal calculation schemes of improved design for definition of carrying capacity of columns - absorbers of improved design are offered. Dependences for definition of carrying capacity of columns - absorbers of improved design are received. Comparison of calculation values of expenses with the experienced ones has shown convergence of results (an error of 3 - 6 %). The research conducted at the hydraulic stand and on models have shown, that the basic share of the expense of a design is the expense entering through section of a projection of the lower or average element vertically. Besides, water additionally entries from charge of the top element, located out of a contour of a projection of lower one or, average element that it is possible to consider by means of introduction of correction coefficients. Principal calculation scheme of improved design of columns - absorbers KPF - 1 with the widened top water reception element (section area 10 square m) and hickness of 0,3 - 0,4 m is shown. The average water entering element is combined with the lower water taking away element and has the volume filter round a filtering insert from the goffered drainage pipe with the filter. The insert is connected to a drain by connecting filtering boxes. Average and lower elements have width of 0,5 m and calculated length. In the resulted design water from the top element entries to the lower one not only within a contour of the projection of the lower element, but also from an adjoining zone, i.e. a working zone of filtration is much more than area of the projection of the lower element
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