Method of controlling state of ground waters during livestock waste irrigation

FIELD: ecology.

SUBSTANCE: method includes ecological monitoring of ground waters using wastewater for the irrigation of lands by sprinkling machines to cultivate perennial grasses. The method includes irrigation fields for utilisation of manure-containing flows in the formed irrigation pattern. For this purpose, observation hydroregime wells are arranged for each individual field at the boundary on the side of the open bounded reservoir and the inflow of drainage water into it. And the measurement is carried out in the site at the boundary of the water bearing stratum, the heterogeneity of the soil cover and the profile. In the study of ground waters samples are taken twice - prior to the irrigation season and after the irrigation season. In this case, the studies of the taken samples are carried out in the agrochemical laboratory by analytical analysis to determine the chemical composition of the water bearing stratum, the values of biochemical values such as pH, NH4, Norg, P2O5, K2O, Ca, Mg, Na, C1, SO4, the quantity of mobile potassium, phosphorus and nitrogen nitrates are measured. Based on the results of the biochemical analysis prior to irrigation and after irrigation of the taken samples from the water bearing stratum for each regime well, the ecological safety of the utilisation of livestock waste is estimated by the content of biogenic elements. In this case, the measurement of the level and values of the biochemical indicators of the water bearing stratum is carried out in the regime wells, the top of the pipe of which is placed above the ground surface and the pipes are placed inside the metal casing in the form of a pipe with a lid.

EFFECT: method makes it possible to estimate the degree of ground water contamination for each site from the use of liquid manure from industrial livestock enterprises.

2 cl, 2 dwg, 1 tbl

 



 

Same patents:

FIELD: agriculture.

SUBSTANCE: invention relates to techniques of drainage of agricultural land of nonchernozem belt with closed drainage and the techniques of use of these lands. The method comprises loosening the drained soils to a depth of at least 60 m. In order to ensure the required by the plants of soil humidity conditions, preventing the possible damage to the pipes of closed drainage and providing industrial applicability of deep loosening, the deep loosening is carried out to a depth of hl, determined in each case from the condition of compliance with the following requirements: (hr)min ≤ hl ≤ (hr)max;(1), hl ≤ (hr)min - D - ΣΔhi , (2), where ΣΔhi = Δh1 + Δh2 + Δh3 + Δh4; (3), 60 ≤ hl ≤ ht , (4) where (hr)min and (hr)max are the minimum and maximum depth of penetration into the trench backfill of the closed drainage of the root system of cultivated culture, respectively, cm; (hd)min is the minimum depth of placement of closed drainage pipes of the project at the site where deep loosening is planned to be carried out, cm; D is the outer diameter of the closed drainage pipes at the site (cm); ΣΔhi is the sum of corrections (cm), including: the correction which depends on the accuracy of the topographic altitude survey of soil surface of the drained site, Δh1; the corrections taking into account the technogenic erosion of the soil surface during carrying out crop-engineering and land planning Δh2 and during ploughing Δh3; correction taking into account the depth of the gauge made by the tractor on the soil surface during deep loosening, Δh4; ht is the maximum possible depth of loosening soil due of the technology level and characterising the industrial feasibility of the inventive method; at that in each point of the drainage trench the thickness of the powdering layer of the drainage pipe over the bottom of the trench mp > hd - hl, where hd is the depth of placement of the closed drainage pipe. Prior to loosening the soil on the drained part the value of the set depth of deep loosening is set on the mechanism of the ripper when setting up, preparing it for work.

EFFECT: positive result is to obtain by a landholder of closed drainage durable and reliable in operation, providing design humidity conditions of soil during its operation for at least a normative term of service.

2 cl

Drainage system // 2557186

FIELD: agriculture.

SUBSTANCE: drainage system comprises drains 1, an inlet collector 2, and an outlet collector 3, between which the storage tank 4 with a siphon 5 is placed. The descending branch 6 of the siphon 5 is brought to the drain well 7 on the level of the outlet collector 3. The float 8 with the plate 9, suspended on a holding traction 10 of the float drive with a valve 11 is arranged, respectively, at the level of the siphon neck 5. The float 8 is placed on the corresponding critical depth of groundwater for the soil and climatic and hydrological conditions of the area, in which the drainage system is located. In the wall 12 of the tank 4, a hole 13 is made for the intake pipe 14, through which the tank 4 is connected to the draining storage water intakes 15. The storage water intakes 15 are connected to the openings 16 of sections of the inlet collector 2 at the location of the drains 1. When mounting the filter storage water intakes 15 the filling of waterproof materials 17 is used, such as sand, gravel, slag or synthetic wastes of light industry.

EFFECT: invention enables to automate fully the process of maintaining the level of groundwater at the level corresponding to the critical, ensures the supply of a certain amount of water from the groundwater in the root layer of soil, which increases moisture reserves for crops and enables decrease partly the irrigation rates, which provides saving water resources, the necessary regime of moistening and aeration of soil is ensured by creating an optimal level of groundwater in the different phases of plant vegetation.

2 cl, 1 dwg

FIELD: construction.

SUBSTANCE: construction method of adits containing a water-receiving element in the form of a solid unit of n number (n>2) of vertical longitudinal toe filters involves trench excavation by means of an excavating and drainage machine, laying into it of a drain pipe covered with protective filter material, and refilling of the trench by means of a padding device moving synchronously with the drainage machine and provided with a bunker for filter material with a drain chute. Laying of the drain pipe covered with protective filter material and refilling of the trench is performed simultaneously. The drain pipe covered with protective filter material is padded throughout the trench width to the depth of 15 cm above its crown from a duct to which filter material is supplied from the bunker via the drain chute. The duct represents a rectangular parallelepiped having width equal to trench width, and height that is somewhat bigger than trench depth. Duct bottom is located near the trench bottom at the distance of padding layer thickness of the drain pipe relative to the trench bottom. The duct is rigidly attached with front wall 7 to housing 8 of the excavating and drainage machine. On rear 9 wall of the duct there installed on the outer side are (n-1) vertical partition walls 10 parallel to each other and to walls 1 of the trench with a possibility of changing the distance between them according to thickness of the filters. Height of each of partition walls 10 is equal to the duct height. The filter material bunker is divided into sections by means of partition walls with a possibility of changing the distance between them and their number so that the number of bunker sections is more by one than the number of vertical longitudinal toe filters of the adit. Each bunker section is provided with its own drain chute, from which each adjacent vertical longitudinal filter is filled with heterogeneous filter material.

EFFECT: providing a possibility of filter refilling of the trench of the adit; improving hydrological action of adits and ecological and economic efficiency of draining of low-water-permeable middle and heavy loamy and clay soils.

4 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: device is located at drainage-watering collector and drainage network. Device contains a drain well 2 with installed drain tip 1, shutdown device, drive and chamber 10 connected by means of the additional chamber 28 with collector 27 cavity. The device is provided with installed self-regulating gear 3 of the regulator in well, and comprises head regulator made in form of the membrane 13 provided at bottom with mesh-type protecting limiter 22 of membrane 13 movement. The membrane 13 is secured at top to the casing 4. The above membrane cavity 12 is connected with atmosphere and with valve 14 and rod 16 by means of two-arm lever 17 with output valve 20 closing the hole 21 in the chamber 10 bottom. The rod 18 of the output valve 20 has piston 19 for water supply in the cavity of the collector 27. The output valve 20 is located in the additional chamber 28, in its side wall the calibrated hole 29 is made, it is connected with well 2. The chamber 10 bottom has inlet hole 23 with valve 24 connected with float 25 installed with possibility of the latter abutment to the limiting shoulders 26.

EFFECT: increased efficiency of the device, operation reliability and quality of the water regulation in the drain system.

3 cl, 1 dwg

FIELD: agriculture.

SUBSTANCE: method comprises a device of drainage trench with a drainage pipe laid on its bottom with a protective-filtering material, the filtering elements in the form of prisms of soil of humus horizon, arranged in a trench to the arable layer, and the final backfilling the trench with soil of humus horizon. Each drainage trench is made with the depth of at least 1.1 m and the width of at least 50 cm across the direction of flow of surface waters at an angle of not more than 30 degrees to the horizontal. The drainage pipe with protective-filtering material is sprinkled with soil of humus horizon, cut off from the upper edges of the trench, not less than 15 cm above the pipe crown. The filtering elements are made in the form of a single block composed of the nth odd number (n≥3) of the vertical regular prisms parallel to the trench walls, in which the prism of soil of humus horizon alternates with the prism from the excavated soils. The width of the prism from the excavated soil is two times greater than the width of the prism of soil of humus horizon, and the width of the trench B and the width of each odd prism of soil of humus horizon b"n" are related to each other as b"n"=2B/(3n-1).

EFFECT: improvement of hydrological action of the closed regulatory network, increase in efficiency of the use of topsoil and the ecological and economic efficiency of drainage of average-loamy soils.

2 cl, 5 dwg

FIELD: agriculture.

SUBSTANCE: method of enhancing the drying action of close collectors consists in supplementing them with deep loosening of soil, comprising periodic deep loosening at an angle to the direction of drainage pipes. Each subsequent periodic deep loosening is carried out in the direction opposite to the previous one. Continuous deep loosening of soil is carried out each time with the ripper with the V-shaped working body necessarily in two directions: the first direction - at an angle of 90° to the direction of the drainage pipe of the collector, the second direction - at an angle of 150° to the first one.

EFFECT: accelerated drainage of surface water and temporary water from the plough layer, obtaining by the landholder of the closed collector durable and reliable in operation, providing the design intensity of soil drying and its moisture regime required to grow plants, during the minimum standard service life of the drainage system.

FIELD: construction.

SUBSTANCE: system includes supply drain lines 1, manifold 2, and storage well 3, in which siphon block 7 is mounted. The system is provided with self-regulating mechanism 4 of ground water level installed in well 3 and consisting of float chamber 6 rigidly fixed in the upper position above the ridge of siphon block 7 and connected by means of a rigid float drive through valve 8 with a blind section of pipe 13 on a descending branch of siphon block 7. The descending branch of siphon block 7 is connected to discharge pipe 14. Float chamber 6 is connected via hydraulic channel 12 to well 3. The lower part of well 3 is sealed, and above discharge pipe 14 it has outlet opening 15 with branch pipe 17, which is shut off with a level control by means of an additional float drive for control of gate 16. Float gate 16 has L-shaped lever 19 with flange 20, on which float 18 and horizontal plate 23 is fixed. Branch pipe 17 is connected to storage well 3 below the ridge of siphon block 7 by value Δh providing maximum design water filling of well 3 with further discharge to discharge pipe 14. Value Δh is calculated by the following formula: Δh=h1-h2. The self-regulating mechanism is connected to hydraulic channel 12 and well 3 as per a principle of communicating vessels. When the level of the ridge of siphon block 7 is achieved, a charging device is actuated and water discharge through siphon block 7 is performed in a pressure mode to the level of the inlet opening of its ascending branch. The level control in well 3 is actuated when maximum water level achieves the fixed restraining bracket 21, and opening of opening 15 with gate 16 is performed.

EFFECT: use of the invention will allow automating of a ground water level control process and maintaining correct soil humidity balance; automatic flushing of the well with pressure water flow.

2 cl, 1 dwg

FIELD: agriculture.

SUBSTANCE: method consists in creating a closed water area in the form of a storage pond 8 with the area of accumulation of sludge from liquid flows. The storage pond 8 is a water area with a levee 12, in which body the inlet water intake hole is made, and the opposite - a water receiver 9 of the water intake pipeline 22. According to the first embodiment of the method, at the bottom of the storage pond 8 the closed air-injecting devices 14, 15 are mounted to form a number of beams diverging from the device as horizontal perforated pipelines 16 in the direction of the base of the upper slope of the dam 12. The perforated pipelines 16 end with a dead end. The air-injecting devices 14, 15 are connected to the central supply pipeline 17, 18 connected to a source of compressed air. With the increase in the accumulation of sediment in the form of sludge in the zones of the storage pond 8 the air supply in portions into the air-injecting devices 14, 15 is resumed with brief connection of the compressor 19 on the command of the time relay 20 on the air duct in the intake pipeline of the closed air-injecting device. Breaking through the holes of the perforated pipeline 16, the compressed air loosens and roils the sludge, with simultaneous saturation of manure flow with it, and transports it to the discharge water intake pipeline 22. As the reduction in the sludge layer in the storage pond 8 the air supply into the air-injecting devices 14, 15 is stopped. According to the second embodiment of the method, in the storage pond a floating platform is placed, on which a compressor is located, connected to the pressure hose air duct. The nozzle of the pressure hose air duct is made in the form of a metal trunk with a perforation in its end part, attached to the rod with graduations in height and in the section of sludge residual accumulation, the end of which is inserted into the precipitate formation. The floating platform is attached on both sides of the dam using a rope and block system in the areas of erosion of the sediment of sludge precipitation.

EFFECT: increased efficiency of transport capacity of roiled manure flow coming from the livestock complex, and increased in functional capabilities of the storage pond with possible disposal of flows on irrigated fields of reclamation.

2 cl, 6 dwg

FIELD: agriculture.

SUBSTANCE: method comprises treatment of soil with simultaneous formation of soil ridges. After summer deep tillage before planting herbs the levelling and compacting is carried out in a single pass with smooth water-filled rollers. Planting is carried out with a mixture of stand of grass growing naturally on sod-podzol sandy loam soils with band stripes. Overseeding of tall-stem cultivated crop of corn is carried out with simultaneous formation of the ridges between the bands, and inter-row processing is not carried out. The tall-stem cultivated crop of corn, which has not reached its complete ripeness, is left for winter. The harvesting is carried out on the second year in spring before the vegetation of grass with grinding and removal of the stems with leaves from the field for dry feed with the subsequent feed additive. In addition, overseeding grass between the band stripes is carried out into mechanically damaged ridges, and top dressing of grass is carried out, which is harvested during the complete vegetation season. The distance between the stripes is taken as 20-25 m, and the row spacing of corn is 70 cm.

EFFECT: creation of an optimal snow cover which protects plants from freezing, and the accumulation of moisture in the spring period for plant development.

2 cl

Drainage system // 2547406

FIELD: agriculture.

SUBSTANCE: drainage system comprises a collector 1 connected with the drains 2 entering into it, vertical tubes 3 and a device for flushing of sediments. The device for flushing is made of perforated pipes 4 in the form of air outlets 7 arranged inside the drains 2 attached to the upper part of the pipes above the bottom. The perforated pipe 4 by the metal barrel 6, placed in the tube 3 is connected to the pressure hose 8, which inlet is connected to the discharge pipe 9 with the valve 10 of the receiver 11. The receiver 11 is connected to the compressor 12 generating the compressed air. The compressor 12 is connected to the timing relay. The invention increases the transporting capacity of disturbance sediments and other compounds in the drain cavity and accelerates their removal into the open channel 17.

EFFECT: increased efficiency of flushing and increased drainage term by air exposure to sediments.

2 cl, 2 dwg

FIELD: chemistry.

SUBSTANCE: composition for purification and remediation of soil from petroleum pollution contains nitrogen-phosphorus fertiliser and zeolite-clayey rock in ratio 1:3. Vermiculite is used as Zeolite-clayey rock and organomineral product, formed after mechanical processing of sewage water sediments and active oil, is used as fertiliser.

EFFECT: sorption binding and utilisation of pollutant, reduction of remediation terms and increased degree of purification.

3 tbl, 2 ex

FIELD: agriculture.

SUBSTANCE: for desalination of heavy saline lands, water is supplied to the desalinisation site, the slits 3 are cut, the irrigation pipes 6 with droppers 7 are placed along the central axis of the inter-slit bands, the inter-slit bands are covered with waterproof screens. Then the wash water is fed through the droppers 7, the soil with salt is moved from the walls of the slits 3 at their bottom after the termination of washing, and the slits 3 are poured. Before cutting the slits 3 the deep loosening 2 is carried out. The slits 3 are cut with a bias of the bottom towards the collector and matched with it. Along the central axis of the inter-slit bands the troughs 5 are formed by compacting, in which the pipes 6 with droppers 7 are placed. After moving to the bottom of the slits 3 of soil with salt they are poured first with gravel as the layer of 0.2-0.3 m, then with sand of the field surface. Then, the site surface is levelled and ploughing is carried out with the formation of the arable layer.

EFFECT: increased efficiency of desalination of heavy saline lands with minimal cost of water, diversion of excess precipitation with removal of salts beyond the desalinisation site.

3 dwg

FIELD: biotechnology.

SUBSTANCE: method comprises grinding slaughter tankage, rotary subsurface mechanical treatment using the ripper with cutters on a horizontal shaft 5 and its mechanical drive in the form of a rotary milling chisel plough 6, the distribution of pulp from slaughter tankage and water in the soil in the process of its rotary subsurface loosening. For disposal of slaughter tankage, it is ground to a particle size of 2-5 mm, mixed with water or water containing disinfectant, in the ratio of 1:3-1:5. Then the formed pulp is applied in the soil to a depth of 30-80 cm. The soil is ground to a particle size of 1-25 mm and mixed with the pulp in a ratio of 1:6-1:20. Then the upper layer of soil is treated on the trace of passing of the rotary milling chisel plough 6 with the disinfectant.

EFFECT: increase in the degree of processing of slaughter tankage, accelerated decomposition of disposed biological material in the soil, improvement of soil fertility.

1 dwg

FIELD: agriculture.

SUBSTANCE: invention relates to agriculture. The method of environmentally friendly bioconversion of superfine metallurgical industry wastes containing heavy metals comprises creation of mixtures based on sand, metallurgical sludge, peat and calcium carbonate for growing plants, and for bioconversion the plants of fodder beet (Beta vulgaris L.), large-flowered flax (Linum grandiflorum), sweet corn (Zea Mays) and rapeseed (Brassica napus) are used.

EFFECT: invention enables to simplify the technology of obtaining organo-mineral fertilisers for agriculture in the process of biological recovery of metal production wastes.

4 ex

FIELD: technological processes.

SUBSTANCE: invention relates to the reclamation of sludge pits, production of artificial earth mixtures based on drilling sludge and can be used in the mining and oil-producing industries. The method consists in the subsequent collection of liquid oil, then, bituminised oil from water surface of the pit, pumping-out of a water phase from the pit, creation of cutting backfills, collection of the bituminised oil from the surface of the drilling sludge, collection of the bituminised oil, oil sludge and oil-contaminated soil from the diking surface of the drilling sludge pit, mixing of the obtained drilling sludge with peat and sand in the following ratio, vol %: drilling sludge not more than 75.0, peat not less than 18.0, sand not less than 7.0, at the total content of the components, which is equal to 100 vol % in the volumes providing the obtainment of soil performing a function of soil-forming rock, with further quality control of the soil, reinforcement of its surface, creation of a fertile layer and by planting; with that, the total volume value of the soil performing the function of the soil-forming rock, volume of a material for the creation of cutting strips, volume of a material for the reinforcement of the soil surface, volume of a material for the creation of the fertile layer is chosen based on the equality or non-exceedance of the volume of the drilling sludge pit.

EFFECT: obtaining the soil performing the function of the soil-forming rock - a component of natural environment, which has improved quality characteristics.

2 cl, 7 tbl, 1 ex

FIELD: electricity.

SUBSTANCE: electrolyser-neutraliser of dissociated contaminations contains pipe casing out of current conducting material and electrodes installed in the casing and connected to source of alternating multiphase current. The casing is made of segments adjoining to each other with creation of the tubular element. The tubular element internal surface at input has constriction, and at output has diffuser. The electrodes are installed in sectors or between sectors in direction of the cleaned flow movement. Sectors are tied up by end cone inserts.

EFFECT: increased productivity due to flowing cleaning of contaminants, simplified replacement of electrodes depending on type of the neutralised wastes.

6 dwg

FIELD: agriculture.

SUBSTANCE: in the method after the preliminary collection of oil from the soil surface, perennial herbal plants resistant to oil-contamination are sown in the oil-contaminated soil simultaneously with the introduction of microorganisms-oil destructors in the form of a solution of a biological product comprising microorganisms-oil destructors with mineral fertilisers.

EFFECT: method enables to increase the cleaning efficiency due to the involvement in the processes of biodegradation of oil-contamination of the wider spectrum of petroleum hydrocarbons and to accelerate the process of the soil recovery.

1 tbl, 2 ex

FIELD: agriculture.

SUBSTANCE: method comprises undercutting of contaminated topsoil, throwing to the bottom of the furrow and piling it with an uncontaminated layer. The contaminated soil layer is undercut by the soil tillage body of a scraper type and moved aside to form a ridge, and the uncontaminated soil fertile layer is opened. The open uncontaminated soil layer is undercut by the combined working body and lifted to the conveyor without the layer overturning. The soil layer is transported first up, then down, leaving a passage for the contaminated layer undercut by the lateral working body of a scraper type under the ridge of the contaminated layer formed by the first working body, and together they are moved to the bottom of the furrow. Then the contaminated soil layer is compacted and closed with the uncontaminated layer passing down from the conveyor. After that the soil is levelled and compacted to the operating width of the device. The device comprises a rectangular frame, support wheels, a mechanism of attachment to the tractor and the working bodies. The first and the lateral working bodies are made of a scraper type. The device also has a combined working body composed of two arranged towards each other rigidly interconnected working bodies of the mouldboard type plough. The total mouldboard part of the combined working body is made truncated in the form of a trough. Behind the combined working body there is a conveyor with ascending, horizontal and descending parts, having a drive of PTO of the traction unit through the power shaft, a reducer and a chain drive. Behind the conveyor a pusher is mounted for levelling the surface of the field after the passage of the device and a packing roller, which is a support one in the transfer of the device to the transport position by the hydraulic cylinder attached to the median longitudinal bar of the frame.

EFFECT: improving the quality of treatment of soil contaminated with radionuclides and heavy metals by avoiding mixing of the contaminated and uncontaminated soil layers in the process of their moving.

7 cl, 2 dwg

FIELD: agriculture.

SUBSTANCE: group of inventions relates to the field of agriculture. The method comprises pasturing by animals, destroying of not eaten, harmful and poisonous plants, levelling animal excrement, and removal of uneaten residues by harrows and rakes, fertiliser application, as well as creation of tree and shrub shelterbelts. At that on the area intended for hayfields and pastures area after pasturing by animals the fertilisers are initially applied, and then the uneaten plants are destroyed, tilting them and applying herbicide by method of smearing it on their biomass, including stems and lower surface of leaves. Harrowing and treatment the grass with rake is carried out after the start of regrowth of plants eaten by animals. The device comprises a reservoir for the herbicide, as well as a pump for feeding it to the tubular perforated rods with means for application of the herbicide to the plants. The perforated rods are mounted behind each other in parallel with the ability of horizontal and vertical displacement, and the device for application of the herbicide to the plants is made in the form of capillary cloth located between the pressure plates and attached on the perforated parts of the said rods which are connected and framed with the cloth and placed in the tubular casings with longitudinal slots through which the cloth is passed, compressed by the pressure plates fixed on the edges of the slots. And the perforated tubular rods are communicated with each other by the hose, at that the inlet end of the front tubular rod is connected to the pump and the outlet end of the rear rod through the drainage tube with the valve - with a reservoir for the herbicide to form a flow regulated system. Furthermore, the perforated tubular rods and their casings are attached to the frame, mounted on the propellers, with freedom of vertical and horizontal displacement.

EFFECT: inventions enable to simplify the technology of creation of forage land on fallow lands with simultaneous formation of tree-shrub belts.

6 cl, 3 dwg, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to environmental conservation technologies, cutting-edge agricultural technologies and chemistry of organosilicon compounds and can be used to restore the structure of disturbed soils by stabilising water-stable aggregate. In particular, the present invention employs water-soluble humic silanol derivatives that are modified in a special way to endow them with the capacity to be irreversibly sorbed on surfaces of mineral particles and other hydroxyl-containing carriers. Humic derivatives are added to the degraded soil in form of aqueous solutions.

EFFECT: method for use in agricultural technologies includes using humic derivatives as structure-forming agents (soil ameliorants) by via attachment thereof to the surface of soil aggregates in order to endow the latter with water-stable properties.

8 cl, 11 dwg, 8 tbl

FIELD: agriculture.

SUBSTANCE: invention relates to techniques of drainage of agricultural land of nonchernozem belt with closed drainage and the techniques of use of these lands. The method comprises loosening the drained soils to a depth of at least 60 m. In order to ensure the required by the plants of soil humidity conditions, preventing the possible damage to the pipes of closed drainage and providing industrial applicability of deep loosening, the deep loosening is carried out to a depth of hl, determined in each case from the condition of compliance with the following requirements: (hr)min ≤ hl ≤ (hr)max;(1), hl ≤ (hr)min - D - ΣΔhi , (2), where ΣΔhi = Δh1 + Δh2 + Δh3 + Δh4; (3), 60 ≤ hl ≤ ht , (4) where (hr)min and (hr)max are the minimum and maximum depth of penetration into the trench backfill of the closed drainage of the root system of cultivated culture, respectively, cm; (hd)min is the minimum depth of placement of closed drainage pipes of the project at the site where deep loosening is planned to be carried out, cm; D is the outer diameter of the closed drainage pipes at the site (cm); ΣΔhi is the sum of corrections (cm), including: the correction which depends on the accuracy of the topographic altitude survey of soil surface of the drained site, Δh1; the corrections taking into account the technogenic erosion of the soil surface during carrying out crop-engineering and land planning Δh2 and during ploughing Δh3; correction taking into account the depth of the gauge made by the tractor on the soil surface during deep loosening, Δh4; ht is the maximum possible depth of loosening soil due of the technology level and characterising the industrial feasibility of the inventive method; at that in each point of the drainage trench the thickness of the powdering layer of the drainage pipe over the bottom of the trench mp > hd - hl, where hd is the depth of placement of the closed drainage pipe. Prior to loosening the soil on the drained part the value of the set depth of deep loosening is set on the mechanism of the ripper when setting up, preparing it for work.

EFFECT: positive result is to obtain by a landholder of closed drainage durable and reliable in operation, providing design humidity conditions of soil during its operation for at least a normative term of service.

2 cl

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