Keywords: functional efficiency, poorly permeable soil, filter backfill, time constant, drain line, economic calculation, material resources, technical and economic
indicator, ranking

// Мелиорация.— 2019. – №4(90) – P 17—25

The article provides brief information on the functional effectiveness of physical models of various options for the construction of drainage lines in cohesive soil of heavy particle size distribution; economic calculation results for drainage line options. The concept of a technical and economic indicator is introduced and the results of its calculation according to device options are presented. Aranked series of technical and economic indicators ranging from 0.712 to 0.185 isobtained.