METHOD FOR CONSTRUCTION OF VERTICAL DRAINAGE Russian patent published in 1997 - IPC

FIELD: drainage for land reclamation, deep water supply, construction of basins. SUBSTANCE: method implies constructing several drain wells with filter columns, creation a through channel in earth from them section by section, introduction of water collection pipeline into channel from its end face with passing through filter columns, creation of openings inside columns in water collection pipeline. If necessary, drilled between drain wells are additional bore-holes down to depth of water collection pipeline, and sections of through channel are formed from them. In loose and non-cohesive ground, channel section are formed by washing-out of ground by streams of liquid in gas flow. EFFECT: high efficiency. 3 cl, 7 dwg