METHOD OF DRYING POORLY WATER-PERMEABLE SOIL WITH SUBSURFACE DRAINAGE, COVERED WITH BINOMIAL DEPOSITS OF LOW POWER Russian patent published in 2014 - IPC E02B11/00 A01B79/00 

FIELD: agriculture.

SUBSTANCE: it can be used in nonchernozem belt, as well as industrial, municipal, township and other territories and can be used in the design, construction and maintenance of drainage systems and the use of drained soils. The method comprises carrying out land clearance operations and construction of a closed collector and sparse parallel drains. The construction breakdown of the drains attached to the collector is carried out, followed by shrinkage of soil of humus horizon - the arable layer on the pathway of drain by the bulldozer with an angled blade. The trenching with depth of not less than 1.1 m with a given slope is carried out. The bottom of the trench is levelled and the pipe is placed on it, wrapped with protective filter material. The drain pipe at least 20 cm above its crown is padded with water-permeable loosely cohesive sabulous-sandy soil of binomial deposits cut from the trench shoulders. The filling of the trench is carried out, which has the width of not less than 0.5 m, to plough pan of the arable layer by its ploughing also with water-permeable loosely cohesive sabulous-sandy soil by monohull hinged brush-and-bog plough PBN-100A with mould and hanging cutter. The levelling layer of soil is carried out excavated during the digging of the trench, in depressions construction band of drain and reclamation of shrinked soil layer on the construction band with a bulldozer with angled blade. Planning of the soil surface and ploughing the soil is carried out. For sustainable spilling the water-permeable loosely cohesive sabulous-sandy soil in the loosened area of cohesive poorly water-permeable soil, as well as the slit behind the drive rod and the rack of the ripper and plough pan of the moving ploughshare and fixed feet pad of the ripper the continuous deep cross loosening of soil is carried out with vibration ripper in the period when the level of soil water stand id not higher than the bottom of the trench of drain to a depth of not less than 30 cm less than the minimum depth of the drain location. Deep loosening of soil is carried out in two mutually perpendicular directions at an angle of 45 degrees to the drain direction.

EFFECT: reliable hydrological effect of subsurface drainage in the course of its operation is provided, creation of optimised mineral soil with improved soil, water and environmental properties of the root layer, and ecological and economic efficiency of drainage of these soils is increased.

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