Method for preservation and isolation anthropogenic deposits

FIELD: chemistry.

SUBSTANCE: invention relates to the field of ecology and environmental management, in particular to methods of waterproofing heap leach pads and waste deposits, in particular to the creation of screens of tailing dumps, sludge tanks, solid domestic waste landfills and bulk arrays preventing environmental pollution by toxic components and dusting as a result of infiltration and erosion processes. In the method of the preservation and isolation of anthropogenic deposits, which consists in preparing a waterproofing mixture containing polyethylene wastes, laying it on the surface of the storage area, application to the chilled surface of a drainage layer of a coarse material, preliminarily in screening the bulks on the surface of the array body the slope is created of 2-5° from the centre to the edges, after the creation of the said slope 0.2-0.4 m pugged clay and sealing are applied on the surface of the layer, laying of the waterproofing mixture to the prepared surface is carried out extrusively at a temperature of 180-200°C in bands with the width of 2-2.5 m with mutual 0.15-0.2 m overlapping, the said drainage layer is applied with the thickness of 0.1-0.15 m, and the waterproofing mixture as polyethylene wastes contains the polyethylene wastes of high and low pressure, and additionally - polyisobutylene and carbon black, with the following ratio of components, wt %: polyethylene wastes of high pressure 74-76, polyethylene wastes of low pressure 14-16, polyisobutylene 6-7, carbon black 3-4.

EFFECT: formation of the coating that prevents the infiltration of atmospheric waters and productive solutions from the bodies of piles, dumps, sludge tanks and solid domestic waste landfills, increase in the strength of the said coating.

2 ex

 

The invention relates to the field of ecology and environmental management, namely the ways of waterproofing the heap leach pads and waste, to prevent pollution of soils, groundwater and surface water, and ground layer of the atmosphere chemically toxic substances, in particular to the creation of screens the tailings, shlamonakopitelej, solid waste landfills and bulk arrays of preventing the pollution of the environment with toxic components and dust, resulting in infiltration and erosion processes.

Known sealing and waterproofing composition (patent RU №2434922, publ. 27.11.2011, IPC SC 3/10), which contains, wt.h.: polysulfide oligomer 100, manganese dioxide 9-15, natural chalk dispersed technical brand MTD-2 90-150, diatomite 20-30, plasticizer 30-60, diphenylguanidine 0.2 to 0.6 and modifying additive of 0.5-1.0. Modifying additive is a distillation residue having a boiling point of at least 200°C, obtained after distillation bottoms from waste production of N-methylaniline fraction with a boiling point up to 200°C. the Disadvantage of the invention is the necessity of the gradual development of anti-filtration screen, which requires strict observance of the formulation and preparation technology of coating, which is complex and trudnowski�tmimim in the field in place of the coating device.

Known waterproofing coating (patent RU №2301206, publ. 20.08.2007, IPC SW 26/26), including waste oil asfaltosmesitelnye deposits AFS and polymer-containing waste polyformaldehyde, at the following component ratio, mass%: AFS - 60-80, waste due 20-40. The disadvantages of this invention are possible toxicity of waste oil, in operation the composition continues to be toxic and reacts with the mineralized leachate; the possibility of decomposition already at 100°C due to formaldehyde, which is quick-acting cellular poison and a carcinogen; low strength of the coating and high filtration capacity.

The known method of preservation storage of liquid industrial waste (patent RU №2452860, publ. 10.06.2012, IPC EV 3/16), which consists of removing water from sinks, giving the bottom of the lower set position, laying on the bottom of the waterproof geomembrane and geomembrane cover and the beach with a protective layer of natural soil. The edge of the geomembrane is placed above expected water level in the reservoir, which is a decrease in precipitation and marketed. In terms of outside geomembrane protective layer at its base contains impervious layer attached to a geomembrane. Ned�the shortcomings of this invention are the need for laying web material with subsequent stapling of the sheets, which adversely affect the strength characteristics of the proposed coverage; the need to create the underlying layers of bulk soils of different composition; geomembrane is exposed to climatic, hydrographic, anthropogenic factors (temperature extremes, sunlight, acid precipitation, etc.), which leads to disruption of the integrity of the Foundation, tear and deterioration of the performance properties of the coating.

Known composition for the preservation of industrial waste dumps (patent RU №2437853, publ. 27.12.2011, IPC E02D 3/12) comprising aggregates, Portland cement, adhesive material and water, and as a filler is used, the waste foundry - proven mold land, the adhesive material is a mixture of liquid glass and liquid aluminium sulfate in the following ratio of ingredients, wt.%: spent sand land of 82.5-87, Portland cement 5,0-8,2, adhesive material (a mixture of liquid glass and liquid aluminium sulphate) 2-0,5, water - the rest. The disadvantages of this invention are eagely for material transportation and use of dangerous natural destruction of the adhesive material.

The known method of preservation and isolation of technogenic deposits (patent RU №2301300, publ. 20.06.2007, IPC E02D 3/12) adopted for the prototype, which consists in the preparation of hydrozole�ionic mixture, containing waste polyethylene 70-99%, PP 1-30%, laying it on the surface of the storage, heat treatment at a melting temperature of the mixture or the surface layer of the repository, and before laying the waterproofing mixture on the surface of the tailings create a gradient of 2-5° from the center to the edges, and after heat treatment on the cooled surface of the insulating layer thickness of 3-10 cm of coarse material. The technical result - improving environmental, manufacturability and cost reduction in the construction of impervious screens, increase strength, reliability, timing, trouble-free operation waterproof coatings. The disadvantages of this invention are the formation of the coating in two stages: the first - styling polymers on the raw surface, and the second subsequent heat treatment, which does not guarantee uniform mixing of the components of the mixture and the uniformity of the coating, low natural resistance to external factors, namely ultraviolet radiation, which has the greatest effect on the microstructure of polymers and reduces their physical and mechanical characteristics, low efficiency of using this method for the preparation of sites for waste storage, as the mixture of polyethylene and polypropylene has an increased propensity to raster�skimania, increasing the likelihood of infiltration processes from the body of the array.

The technical result of the invention is the formation of a coating which prevents the infiltration of atmospheric water and productive solutions from the body piles, dumps, tailings and storage of solid waste, accompanied by contamination of groundwater by toxic substances and dust pollution and the removal of valuable components from the body of the array.

The technical result is achieved in that the method of preservation and isolation of technogenic deposits, consisting in the preparation of waterproofing mixture, laying it on the surface of the vault, when pre-screening mounds on the body surface of the array creates a gradient of 2-5° from the center to the edges, characterized in that the waterproofing compound is prepared from waste high-density polyethylene - 74-76 wt.%; waste polyethylene of low pressure - 14-16 wt.%, polyisobutylene - 6-7 wt.% and carbon black - 3-4 wt.%, which stack extrusive on the prepared surface at the temperature of melting of the mixture 180-200aboutC, then cooled on a surface put a drainage layer of coarse material thickness 0.1-0.15 m, and

laying the waterproofing mixture is carried out in a width of 2-2. 5 m with mutual overlap of 0.15-0.2 m.

A method of forming casinoparty is as follows.

Prepare the waterproofing mixture of waste high-density polyethylene (HDPE) (74-76 wt.%), waste high-density polyethylene (HDPE) (14-16 wt.%), polyisobutylene (6-7 wt.%) and gas soot (3-4 wt.%), the exact composition of the mixture is determined by climatic conditions and lithologic characteristics of the composition of industrial waste.

In the Northern areas, i.e. in areas of permafrost, requires long-term preservation of ductility of the coating at low temperatures, in this case, the mixture shall contain a maximum claimed amount of LDPE (76 wt.%) and a minimal amount of HDPE (14 wt.%), it also requires the introduction of a 7 wt.% polyisobutylene as the plasticizer polymers that reduce the melting point of the polymer and to increase the ductility of the coating. Carbon black in such a case is entered in the minimum amount of 3 wt.%. In areas with hot and dry climate is necessary to retain thermal stability and UV resistance of the coating to the polyethylene content remains unchanged, and the ratio of the plasticizer and carbon black is changed to decrease the percentage of plasticizer: polyisobutylene 6 wt.%, gas black 4 wt.%. Introduction to polymer a mixture of carbon black can improve the absorption and dissipation of energy of the UV light, soft light�the one i.e. the component of the recipe is a light and heat stabilizer. Also with the introduction of 3-4 wt.% soot marked slowdown of the process of destruction of the waterproofing coating.

If the composition of the insulated surface is dominated by a loose incoherent rock, the coating should have a greater stiffness, in this case it is advantageous to increase the content of HDPE to a maximum percentage (16 wt.%) and a decrease in the content of polyisobutylene (6 wt.%). In the case of the prevalence of fractured rock, as well as the presence of inhomogeneities on the surface of the insulated substrate the coating should have high ductility, in this case, the mixture should contain 76 wt.% LDPE and 14 wt.% HDPE, with a maximum content of plasticizer 7 wt.% and minimum carbon black 3 wt.%.

Before the formation of the protective screen are planning work on the surface of an insulated object, namely the alignment surface lower it to the edges, through the creation of a small slope (2-5°) from the body's center to its edges. This is done to divert rainwater and productive solutions with the screen surface on adjacent areas or manifold system. After the planning stage, to reduce the number of irregularities on the surface is applied a layer of crushed clay 0.2-0.4 m and compacted.

The mixture is prepared �UTEM mixing at the point of application, after which it is loaded into the hopper extrusion molding machine where it is subjected to electrothermal heating to the melting temperature of 180-200C°. Further, by the screw feed extruder the mixture in molten form is applied to the prepared surface strips 2-2. 5 m, with mutual overlap of 0.15-0.2 m. the overlap of the strips stacked polymer mixture will improve the integrity of the coating, and eliminate the need for crosslinking of the coating, as in the case of the use of geomembranes.

The main problem of the functioning of such a screen is the impact of solar radiation, which leads to fairly quick, within a few years, the deterioration of the strength properties of polymer screens, and then destruction. In addition to the introduction of polymer additives (carbon black) is a cost effective solution is the application of 0.1-0.15 m layer of coarse material (gravel, pebbles, etc.), which takes care of the load in the form of solar radiation, but does not violate the strength properties of the molten polymer of the screen. The thickness of the insulating layer varies depending on the particle size of the material to achieve its highest resistance. Also, this layer will improve the security of polymer waterproofing coating from mechanical damage during stacking of mineral waste and AGL�melirovannyh ores.

Example 1. A mixture prepared by mixing at the point of application, after which it is loaded into the hopper extrusion molding machine where it is subjected to electrothermal heating to the melting temperature of 180°C. Further, by the screw feed extruder the mixture in molten form is applied to the prepared surface strips 2 m, with mutual overlap at 0.15 m and the subsequent application of a layer thickness of 0.1 m of coarse material (gravel, pebbles, etc.)

Example 2. A mixture prepared by mixing at the point of application, after which it is loaded into the hopper extrusion molding machine where it is subjected to electrothermal heating to the melting point 200°. Further, by the screw feed extruder the mixture in molten form is applied to the prepared surface strips 2.5 m, with mutual overlap of 0.2 m and the subsequent application of a layer thickness of 0.15 m coarse material (gravel, pebbles, etc.)

In both examples, the physical and mechanical properties of the formed polymer coating meets the technological requirements and conditions of the Northern regions of the Russian Federation.

The present invention allows to solve the main problem of polymer waterproofing coating, namely the damaging effects of solar radiation, the introduction of the gas mixture soot and application cheap CL�I coarse material (gravel, pebbles), as well as to reduce environmental risk industrial areas by reducing the impact of infiltration and soil erosion processes. So

by the way, the use of this method allows to increase strength, resistance to deformation waterproofing coating, to create a coating resistant to aggressive environments, ecologically safe for the environment.

Method of preservation and isolation of technogenic deposits, consisting in the preparation of waterproofing mixture containing waste polyethylene, laying it on a surface storage, applied to the cooled surface of the drainage layer of coarse material, previously under the screening mounds on the body surface of the array create a gradient of 2-5aboutfrom the center to the edges, characterized in that after the creation of the specified slope is carried out coating the surface of a layer of crushed clay 0.2-0.4 m and compaction, laying of the waterproofing mixture on the prepared surface is carried out extrusion at a temperature of 180-200aboutWith a width of 2-2. 5 m with mutual overlap of 0.15-0.2 m, the specified drainage layer is applied with a thickness of 0.1-0.15 m, and the waterproofing mixture contains as waste polyethylene - waste polyethylene of high and low pressure, and additionally it contains polyisobutylene and gas soot�, with the following ratio of components, wt.%: waste high-density polyethylene 74-76, waste high-density polyethylene 14-16, polyisobutylene 6-7, carbon black 3-4.



 

Same patents:

FIELD: construction.

SUBSTANCE: method includes formation of a well, placement of a stretching tight shell in it and supply of sealing substance. The well is formed by driving a pipe with a plug at the end and a stretching tight shell on the outer surface into soil. The sealing substance is supplied into the specified shell via longitudinal slots made in the pipe. The device comprises a working organ and a facility of impact load application to it, comprising a pipe, where a rod is inserted as capable of longitudinal displacement in it and contact with the working element. The stretching tight shell is placed onto the pipe and fixed, and longitudinal slots are made underneath in the pipe. The working element is made in the form of a rod, forming a plug, with a cone-shaped tip at the end and inserted into the guide pipe as capable of limited longitudinal displacement in it. The rod comprises an accessory to prevent fallout from the pipe, and its cone-shaped tip protrudes from the pipe.

EFFECT: increased density of soil by introduction of a stretching tight shell into it, expansion of device capabilities for creation of a pile with a support in a base.

8 cl, 2 dwg

FIELD: construction.

SUBSTANCE: method to produce cracks in clayey waterlogged soils includes drilling of wells, formation of cracks by injection of cracking material into a well, and tamping of wellheads. At the same time burnt lime of grade 1 and 2 is used for cracking. Wells are filled with lime in layers with subsequent ramming and compaction of each layer.

EFFECT: increased effectiveness of formation of stable and resistant cracks in waterlogged clayey soils around a well in radial direction.

FIELD: mining.

SUBSTANCE: method comprises well drilling, cracking by injection into the well of crack-forming material, plugging of hole mouth. Meanwhile the well cross-section is transformed from cylindrical into square, and then layer by layer the well is filled with quicklime with compaction and sealing of each layer. Into the formed cracks in a radial direction from angles of square cross-section well and by means of injector the strengthening solution is injected. The method allows to obtain stable cracks in a radial direction from angles of well square, that results in increase of strengthening volume. Due to wedging action of lime slaking and the stress concentrations the cleavage cracks are formed, the length of which amounts 2-3 lengths of the side of square well, and the width 5-15 mm. At the expense of increase of parameters of cracks in a radial direction from angles of square section well with the subsequent injection of strengthening solution the physico-mechanical properties of the ground are improved, as far as the infilling of all formed cracks results in ground strengthening, that improves bearing capacity of clay saturated soils. Besides the given method allows to work with small-sized and minimum quantity of machinery in any conditions of building.

EFFECT: increase of bearing capacity of clay water-saturated soils.

FIELD: construction.

SUBSTANCE: when creating an anti-filtration screen of a hydraulic structure for storage of industrial wastes, for instance, a sludge reservoir, layers of the screen on the base of the sludge reservoir are formed using a suspension of industrial wastes, containing finely dispersed particles, with compaction of layers. The base of the sludge reservoir is made from clay or loam, compacted, the compacted layer is poured with a water suspension of finely dispersed dust of gas treatment from electrothermal production of silicon and/or siliceous ferroalloys with the solid to liquid ratio within 3÷10:1. The suspension is maintained until absorption into the layer of the sludge reservoir base. The clay or loam layer is laid on top and compacted. The water suspension is poured in the amount of 50-100 l/m2.

EFFECT: invention will make it possible to prevent contamination of soil layer adjacent to storages due to reduction of coefficient of filtration of insulating material, to recycle anthropogenic wastes in the form of a finely dispersed dust of gas treatment of electrically thermal production of silicon or siliceous ferroalloys.

2 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: invention increases tensile and compression strength of priming coats, as well as water-resistance thereof while reducing binder consumption to 0.003-0.012 wt %. The effect is achieved by using cation-active imidazoline and polyacrylic acid in the composition, which form an insoluble polyelectrolyte interpolymer complex during chemical reaction.

EFFECT: invention relates to a method of producing a stable structural composition based on a priming mixture of clay and sand as natural filler and can be used for industrial purposes for producing moulding agents, accelerated hardening of priming coats and endowing priming coats with hydrophobic properties.

1 tbl

FIELD: construction.

SUBSTANCE: invention relates to construction, namely, to strengthening of soils. In the method of soil strengthening in the area to be strengthened, a compacting agent is supplied from a loading reservoir into soil with a mixing facility located in a device for supply of the compacting agent. The device for supply of the compacting agent is located in connection with a transfer facility, and a facility for mixing for a compacting agent located on the device for supply of the compacting agent, is moved by the transfer facility at choice to any point in the zone, which must be strengthened, in vertical direction (y), horizontal direction (x) and/or in perpendicular to substantially perpendicular direction to the plane stretching via the specified vertical direction and horizontal direction. A support bridge included into the transfer facility is located for passage via the area, which must be strengthened, and in connection with the support bridge the first transfer elements are located for movement of the facility for mixing of the compacting agent in vertical direction (y) and/or horizontal direction (x), and the transfer facility comprises the second transfer elements and the support bridge, and the device for supply of the compacting agent with the facility for mixing is moved by the second transfer elements in perpendicular to substantially perpendicular direction to the plane passing via the specified vertical direction (y) and horizontal direction (x), and providing both ends of the support bridge by the second transfer facilities to maintain the support bridge on the material of the support and/or the soil of the base, as a result of which the distance (A) between the second transfer facilities is adjusted for compliance with the width of the area to be strengthened, in longitudinal direction of the support bridge.

EFFECT: increased stabilisation of soil strengthening, reduced labour intensiveness and material intensity in production of works for soil strengthening.

9 cl, 2 dwg

FIELD: mining operation.

SUBSTANCE: method of protection of karst occurrence comprises drilling wells in the area of karst formation and injection of reinforcing material. While injecting the reinforcing material in the form of a polymer-mineral composition in the rock mass of the area of karst formation two layers are created: the lower insulating-stabilising layer which prevents access of water to the karst at the depth of occurrence of karst rocks and stabilising the situation at the stage of karst formation, located within the boundaries of the sliding wedge, and the upper bearing layer serving as a bearing local layer and corresponding to the width of the lower layer. Drilling wells is carried out sequentially - first inclined well is drilled to the upper transition zone of the geological horizon exposed to karst formation, the polymer-mineral composition with the capacity from 2 to 10 meters is pumped, which forms a lower insulating-stabilising layer, then the inclined well is drilled to contact with the upper boundary of groundwater, and the polymer-mineral composition with the capacity from 2 to 5 meters is pumped, which forms the upper bearing layer. Then the control vertical well is drilled to contact with the upper bearing and the lower insulating-stabilising layer. The core-sample is raised from each layer to check the presence of the polymer-mineral composition. Between the bearing and the insulating-stabilising layers in the rock mass the channel of flow of groundwater from the water collection area to the discharge area is formed, preserving the natural hydrogeological mode in the rock water-bearing mass of the karst formation area.

EFFECT: increase in protective properties of rocks with karst occurrence, improvement of physical and chemical and bearing properties of the soil, increase in the strength properties of the soil, reduction of the possibility of landslides occurrence.

3 dwg

FIELD: construction.

SUBSTANCE: first, size and depth of a karst formation under a building foundation is determined; then, the first type of wells is formed along the building perimeter at least in one row; injectors are introduced to each of the above wells and a hardening solution is injected into well walls. Wells are formed so that at injection between adjacent wells in the row there can be formed intersecting zones of compacted soil; in the lower zone of loose soils of geomassif, which are located around a karst formation caving zone, there formed are at least two rows of wells of the second type, which are located in an arch periphery line, into which there also pumped is a hardening solution by means of injectors, so that wall-shaped structures are formed by means of the hardening solution throughout the height of the karst formation out of intersecting solid elements that are flat as to vertical direction. Then, in the lower zone of loose soils of geomassif, which are located above dome-shaped arch of the karst formation caving zone, there formed is the third type of wells located along the imagined surface of the dome-shaped arch of the karst formation and going beyond the perimeter of the zone enveloped with wells of the second type, to which there also pumped is the hardening solution by means of injectors, so that a dome-shaped massif of at least one layer of intersecting flat-parallel elements is formed above the karst formation with formation of compacted geomassif above the dome-shaped massif. After that, at least one well of the fourth type is formed with its opening to the cavity of the karst formation, which is filled with the hardening solution, with formation in the cavity of the karst formation of a volumetric elements; at availability of suffusion processes in the karst formation, to the karst formation cavity there added is at least one flexible envelope, to which the hardening solution is pumped, after hardening of which the soil is additionally compacted above layers of flat-parallel elements of the dome-shaped massif by pumping of the hardening solution in a downward or upward direction to cracks and cavities formed during formation of a dome-shaped arch out of flat-parallel elements. Cement mortar and/or raw mix containing a siliceous component, a gas-forming agent and a mixing agent is used as a hardening solution.

EFFECT: improving reliability of reinforced geomassif; reducing labour input and material consumption at its formation.

8 cl, 4 dwg

FIELD: construction.

SUBSTANCE: method includes injection of a sealing substance, providing for damage of soil structure. Soil compaction is carried out by development of bodies in it with specified dimensions, shapes and properties from non-Newtonian liquid, which does not change the ratio of its components under load and preserves shape given to it with absence of external impact, which is injected by pressing into soil with impact loads applied to its surface. Soil is compacted by its displacement by external surface of developed bodies from spaces that they occupy. The device comprises a working element and a facility to apply impact load to it, made of a guide pipe, into which a rod is inserted as capable of movement along it and contact with the working element. The working element is made in the form of a rod with a conical point at the end and is inserted into the guide pipe as capable of limited longitudinal displacement in it. The conical point of the rod protrudes from the guide pipe. On the working element there is an assembly that excludes its drop-out from the guide pipe.

EFFECT: increased density of soil by introduction of non-Newtonian fluid into it in the mode of periodical impact loads and increased efficiency of a device due to elimination of the possibility to damage a well with a rod and deviation of the working element from the specified path.

5 cl, 1 dwg

FIELD: mining.

SUBSTANCE: composition for sandy soil reinforcement, comprising a filler and a binder component, and the filler comprises sand milled to fine dispersion (74-136 nm), and the binder component is used as saponite-containing material milled to microdispersed state (265-451 nm) isolated from pulp of tailing dump of industrial ore dressing of diamond field deposit, with the following ratio of components, wt %: saponite-containing material 3-6, sand - the rest.

EFFECT: improving the strength characteristics of sandy soil.

2 tbl, 3 dwg

FIELD: construction.

SUBSTANCE: invention relates to the field of hydraulic engineering and can be used in the construction of rock-fill dams on rivers in hard-to-reach areas with limited resources of natural building materials suitable for the construction of watertight element. Diaphragm of rock-fill dam on the rocky foundation 1 is made in the central area by filling the longitudinal cavity with water-resistant material. This cavity is formed between the prefabricated panels 5 installed back-to-back one upon the other. Process longitudinal cavity is formed by placing the prefabricated panels 5, supported by a vertically mounted metal tubular studs or metal studs 3 with longitudinal grooves, for example I-beams, channel beams, rails, interconnected by rods 4 into the single frame, providing the overall stability of the diaphragm during the construction period. Metal tubular studs 3 are made with holes for injecting the tiered impermeable and plastic material 6 of the diaphragm, filled firstly with rock macrofragmental material.

EFFECT: safety of rock-fill dam, arranged between the steep rocky banks in the narrow alignment, with characteristically high flood levels in the river is improved, construction periods are reduced.

1 dwg

FIELD: construction.

SUBSTANCE: when creating an anti-filtration screen of a hydraulic structure for storage of industrial wastes, for instance, a sludge reservoir, layers of the screen on the base of the sludge reservoir are formed using a suspension of industrial wastes, containing finely dispersed particles, with compaction of layers. The base of the sludge reservoir is made from clay or loam, compacted, the compacted layer is poured with a water suspension of finely dispersed dust of gas treatment from electrothermal production of silicon and/or siliceous ferroalloys with the solid to liquid ratio within 3÷10:1. The suspension is maintained until absorption into the layer of the sludge reservoir base. The clay or loam layer is laid on top and compacted. The water suspension is poured in the amount of 50-100 l/m2.

EFFECT: invention will make it possible to prevent contamination of soil layer adjacent to storages due to reduction of coefficient of filtration of insulating material, to recycle anthropogenic wastes in the form of a finely dispersed dust of gas treatment of electrically thermal production of silicon or siliceous ferroalloys.

2 cl, 1 tbl

FIELD: construction.

SUBSTANCE: invention relates to the field of hydraulic engineering and may be used to establish anti-filtration devices on irrigation canals, water reservoirs and waste accumulating ponds. The anti-filtration coating with a bentonite cord includes a double-layer coating laid along the canal perimeter. The coating is formed from two geomembrane widths. Widths are connected to each other by longitudinal seams. A bentonite cord is placed into the cavity between layers of the coating. A protective soil layer is filled above the geomembrane. Operational reliability and durability of the coating is provided.

EFFECT: invention eliminates water losses for filtration during damages of both lower and upper layers.

2 dwg

FIELD: construction.

SUBSTANCE: invention refers to hydrotechnical construction and can be applied in waterproofing of irrigation channels. Watertight screen includes extended polymer panels laid overlapping on a prepared base and interconnected by 1.0-2.0 mm thick geomembrane band to form deformation fold. Before placement in channel beds, extended panels are made of flexible sheets out of polyolefin waste in the form of polymer sheets of 15-20 mm thickness, 1.5 m width and 15-20 m length. Flexible sheets are connected to form 10.0-11.5 m wide panels of the length equal to a channel perimeter. Geomembrane is made of polyolefin waste. Panels feature installation holes. Waterproofing element is attached to the slopes by metal anchors with sealing washers, hammered into ground through installation holes. Complete water tightness and hydraulic efficiency of channel bed is achieved. Due to significant thickness of waterproofing element, and deformation folds available, the waterproofing screen is highly reliable.

EFFECT: prevented water loss by penetration from irrigation channels, prevented swamping, salinisation and flooding of valuable agricultural lands, and thus improvement of meliorative and ecological situation in irrigated lands.

6 cl, 5 dwg

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering and may be used for antifiltration protection of water reservoir canals. The multi-layer antifiltration coating includes waterproof and reinforcing layers. The waterproof layer is made by flexible sheets manufactured from polyethylene wastes, and the reinforcing later is a geonet from polyethylene wastes or geotextile from wastes of textile industry, Flexible sheets are thermally connected to components of the reinforcing layer by melting of sheet surface.

EFFECT: invention provides for high watertightness, durability, reliability in operation at collapsing and heaving soils of the base.

5 cl, 4 dwg

FIELD: agriculture.

SUBSTANCE: method comprises development and filling of the trench 1 with impervious material from geomembrane 2. Before lowering into the trench 1 of the geomembrane 2 the additional plate of geomembrane 4 is glued to it 3. The space between the geomembrane 2 and the additional plate 4 is filled with sorbing-filter material 5 to form a drainage system of rectangular shape. In the main 2 and the additional plate 4 of the geomembrane on opposite sides near the places of gluing 3 of the additional plate 4 the filter windows 6 are made. At the inlet to the drainage system from the side of groundwater dam 7 in the additional plate 4 of the geomembrane and in the main geomembrane 2, in the place of location of the filter windows 6, in the soil to a depth of the trench the receiving 8 and the outlet 9 niches are located, which are filled with coarse filter material 10.

EFFECT: improvement of efficiency of purification of contaminated groundwater flow and increase in the volume of its passing.

1 dwg

FIELD: construction.

SUBSTANCE: invention relates to the field of hydraulic engineering and may be used to eliminate filtration via a body of low-head dams of storage ponds, dams of river beds and canals. An anti-filtration membrane of low-head dams and dykes from soil materials includes a waterproof wall. The wall is assembled from boards of two types - A and B. Boards are made of polyolefine wastes. Boards have semi-cylindrical ledges and grooves. Boards of type A are equipped with a longitudinal cylindrical cavity and an inverse filter from geotextile. The inverse filter is arranged at sides of the membrane. It becomes possible to efficiently determine the position of a depression curve in the dam body.

EFFECT: increased operational reliability.

6 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: pit is dug out for burial of industrial wastes. Wastes are dewatered and mixed with heavy oil, heated to thermally oxidise obtained mix. Mix ply is laid on pit bottom and slopes to polymerise the mix of hardened damp-proof shield for pit to be filled with industrial wastes and to make a protective coating thereon. Then, boards of reusable framework are placed on pit bottom and filled with the mix of thermally oxidised soil and oil. Vertical mutually perpendicular hardened shields and independent vessels are created at the pit over its entire depth. Said vessels are filled with dewatered industrial wastes and protective coating reinforced with meshes is erected there above using said mix of thermally oxidised soil and oil to rest on pin slopes.

EFFECT: higher environmental safety.

1 dwg

FIELD: ecology.

SUBSTANCE: method consists in location at the bottom of a water channel serving as the groundwater inflow for water intake, of filter material with the layer of 1-1.5 m. The filter material consists of a mixture of zeolite-containing clay of local origin - Irlit 1, Irlit 7, Alanite - and barite. Barite is taken in an amount of 5-7% of the total amount of clay.

EFFECT: simplification of the method due to the use of local natural raw materials.

FIELD: agriculture.

SUBSTANCE: invention relates to the field of protection of groundwater and open water courses and is designed to intercept contaminated groundwater flows from the containment pond for production wastes, effluents of livestock farms, spills of oil and oil products from oil storage tanks, gas stations and others. The method comprises filling the main trench 1 with an impervious material 2 in the form of geomembrane with preformed windows 3, after which additionally perpendicular to the main trench 1 receiving beam trenches 4 are developed and filled with a sorbing-filter material 5. Then perpendicular to the main trench 1 additionally water drainage beam trenches 6 are dug and filled with the filter material 7. The receiving beam trench 4 at the inlet to the main trench 1 is equipped with a water receiving tank 8 and alsoa pump 9 for pumping from the upper layer of water 10 of floating contaminated soluble matters.

EFFECT: increased capture area by the beam water intakes of contaminated groundwater flow, as well as cleaning and outlet by the beam water intakes of a purified flow into the ground behind the curtain grouting.

3 cl, 2 dwg

Channel lining // 2251606

FIELD: hydraulic engineering, particularly reinforced concrete lining for channels built in seismic areas in earth.

SUBSTANCE: channel lining includes reinforced concrete slope panels and bottom panels divided by longitudinal and transversal construction seams covered with band diaphragms. Longitudinal and transversal seams are covered with two rows of band diaphragms and reinforcing bars made of elastic metal are installed across the seams. The reinforcing bars are anchored into neighboring panels.

EFFECT: increased operational reliability of channel lining in seismic areas and increased air-tightness.

4 dwg

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