Device to seal areas of adjacency of metal-concrete in barrier structures of protective facilities
SUBSTANCE: device to seal areas of metal-concrete adjacency comprises a plate steel part of protective sealed doors, hatches or flanges of tubular inputs of engineering utilities with holes for injectors. Holes are evenly arranged along the steel part. The device comprises a source of DC current with a rheostat or an autotransformer and an electromagnet. The electromagnet is installed on the steel part, with a coil in the form of a winding from current-conducting wire with insulation and ends of this wire, closed to poles of the source of DC current. The coil of the electromagnet is arranged on a crossbeam of the U-shaped magnetic conductor. The lower part of each stand of the magnetic conductor fully complies with the shape, volume and geometric dimensions of the inner space of the hole for the injector. The height of the lower part of magnetic conductor stands is equal to thickness of the steel part. The distance between centres of cross sections of the electromagnet magnetic conductor stands is equal to double distance between centres of holes for injectors.
EFFECT: device makes it possible to increase quality of sealing, to reduce power inputs and consumption of materials.
The invention relates to the construction and can be used for repairing cracks and sealing leaky junctions of concrete to metal products of inputs (doors, hatches) and engineering services in walling protective structures of the Armed Forces and Civil defense (command posts, shelters, fallout shelters, and others), in which the operating personnel or the population sheltered from the effects of dangerous and harmful factors affecting weapons of mass destruction (nuclear, chemical, and other).
A device for sealing junctions metal-concrete walling protective structures by injection into cracks and looseness of the magnetic sealing in the form of mixtures of cement, epoxy and other solutions with ferromagnetic filler (e.g., magnetite) and retain them in the area of leaks before curing parameters of a magnetic field, comprising a steel plate detail protective hermetic products (doors, hatches or flanges of inputs in the construction of utilities heat, water, gas, electricity and ventilation) with holes for the injectors and the injectors for injection of leaks in places of an adjunction of a metal-concrete magnetic sealing compounds, lamellar oxide-barium or other magnets, set�Lenno on the surface of metal parts in between injectors [1, 2].
Closest to the proposed is a device for sealing junctions metal-concrete walling protective structures , comprising a steel plate detail defensively-hermetic designs of doors, hatches or flanges of engineering services, the holes in it for the injectors and the injectors that are installed in the openings for discharge through them in the event of leakage junctions metal-concrete magnetic sealing mixture, evenly spaced on the surface of steel parts with a protective hermetic structures of inputs or inputs at the same distance between each other, a constant current source with control of magnitude of current (resistor or autotransformer) and an electromagnet, mounted on the surface of steel parts with a coil in the form of a coil of conductive wire with insulation and the ends of this wire, closed pole of the DC source. In this case, the solenoid coil is located on the crossbar of the U-shape magnetic core round or rectangular racks which are mounted on the surface plate steel parts between two adjacent injectors at the same distance from each fitting.
However, the specified device for sealing junctions metal-concrete cladding� protective structures cannot create the necessary parameters of the magnetic field (0.01 to 0.02 T [2, 3]) in the area of cracks and discontinuities of metal-concrete, along with the required magnetodiode and retaining effective volume of the magnetic sealing mixture, when the thickness of the steel plate metal parts protective hermetic designs is 8-10 mm. or more as a result, the injected magnetic sealing the mixture is partially fills cracks and defective places, especially in remote locations space zone indicates that the metal-concrete, and flows from them under the influence of gravity. The increase in the discharge pressure of the magnetic sealing mixtures provokes leakage from leakages and increases the flow of sealing material. Significantly, the increase and the energy consumption of the sealing process. The required increase of the magnetic field necessary to create also known as h and holding power in the magnetic volume of the sealing mixture is impossible for two reasons. First, to create the desired characteristics of the magnetic field coils should be made with a very large number of turns, and its dimensions are, unfortunately, limited by the length of the U-shaped rack of the magnetic circuit and the distance between the injectors. Secondly, it is impossible in a steel product with a thickness of 8-10 mm to create the desired magnetic saturation in the magnetic flux of hermeti�yuusha mixture was necessary value also known as h and holding forces. To explain this statement we give a brief physical picture of the magnetic saturation of plate steel parts under the influence of a constant magnetic field . In the amount of any ferromagnetic (steel is a ferromagnetic material) is formed of a large number of areas of spontaneous magnetization, which in the literature are called domains. Adjacent domains are separated by layers, called domain walls. In these layers there is a gradual transition from one direction of magnetization to another. In the absence of external source, the resulting magnetic field in the metal is zero, because equal values of the magnetic moments of adjacent domains because of their multi-directional. The appearance of external influence in related domains (from an external source, e.g., an electromagnet) the magnetic field has the same direction, causing the walls between domains gradually reduced, and the increase in the number of domains with the same direction of the magnetic field. The thickness of the magnetized layer of metal (from the system side of the electromagnet) gradually increases proportional to current in the coil of the electromagnet. In principle, when a very large amount of current in the coil to reach full magnetic saturation thickness meta�La, but practically specified magnetic containment system indicates that the metal-concrete, adopted us as a prototype, walling protective structures complete saturation of the metal with thickness of 8-10 mm can not provide due to the need of increasing the number of turns of the coil and its dimensions, as mentioned above.
The invention solves the task of providing a higher quality of work on sealing leaks in places of an adjunction of a metal-concrete walling protective structures, reduced power consumption and flow rate of sealing materials.
This technical result in the device for sealing junctions metal-concrete walling protective structures containing steel plate detail defensively-tight doors, hatches or flanges of tubular engineering services, had a hole in it for injectors and injectors, for injecting through them in the event of leakage junctions metal-concrete magnetic sealing mixture equally spaced along the steel parts with equal distance between them, a constant current source with a resistor or autotransformer and an electromagnet mounted on a steel part with a coil in the form of a coil of conductive wire with insulation and it ends� wire, closed pole of the DC source, wherein the solenoid coil is located on the crossbar of the U-shape magnetic core round or rectangular racks which are mounted on the surface plate steel parts between two adjacent injectors, is achieved in that the lower part of each frame of the magnetic circuit of the electromagnet must fully comply with the shape, volume and dimensions of the internal space of the hole for the injector and consolidate it with the existing tolerances and connections. In this case the height of the lower part of the uprights of the magnetic circuit is equal to the thickness of steel metal parts and the distance between the centers of cross sections of the poles of the magnetic circuit of the electromagnet is equal to double the distance between the centers of the holes for the injectors.
Horizontal surface of the ends of the lower parts of the uprights is a U-shaped magnetic circuit, which in principle are the poles of the electromagnet coincides with the inner surface of the metal embed steel parts along which the magnetic sealing the mixture in the process of conducting a leak-proof works is transported in leak junctions metal-concrete under the influence of the discharge pressure and also known as h-power. In this regard, any electromagnet with a coil 1800 turns of wire sew dia�a 1.2 mm ETP will provide in the space of defective places of the magnetic field with the required parameters of magnetic induction and also known as h-power, since the poles of the electromagnet, in the form of a screwed in metal mortgage detail of the uprights is a U-shaped magnetic circuit, in the process forcing the sealing mixture in contact with it, to produce a closed magnetic system with a closed magnetic flux (see act test). As a result, there is no need to create a powerful electromagnets for magnetic saturation of the metal.
To ensure the free-flow magnetic sealing the mixture into the cracks and space indicates that the metal-concrete in the process of organizing leak-proof works the lower parts of the uprights of the magnetic circuit, having equal-hole shape and size, must be equal to the thickness of steel metal parts. If the height of the lower parts of the uprights will be greater than the thickness of the metal parts, they will be inserted into the space of the defective places that will cause increased resistance to the flow of the sealing compound. If less may decrease the quality of reliability of fastening of racks of the magnetic circuit on the metal parts.
Fabrication of U-shaped magnetic circuit with racks, the distance between cross sections, which must be twice the distance between adjacent holes shall install the uprights of the U-shape magnetic core in the holes for the injectors and over�boards mount in them.
Fig.1 shows a device for sealing junctions metal-concrete walling protective structures (General view) in the form of steel metal parts 1 box of protective airtight doors with 2 holes for injectors 3, the electromagnet 4, the constant current source 5 with a rheostat or variable transformer.
Fig.2 shows a device for sealing junctions metal-concrete walling protective structures (longitudinal section) in the form of a fragment of metal parts made of steel 1 box of protective airtight doors with 2 holes for the injectors and the injector 3, the electromagnet and the coil 4, the constant current source 5 with a rheostat or variable transformer, the magnetic cores 6 with the lower parts of the uprights 7 of the U-shape magnetic core.
An example of a specific implementation of the device for sealing junctions metal-concrete walling protective structures depicted in Fig.3, includes an electromagnet 1 with a U-shaped magnetic core and the coil in the form of a coil of wire with the insulation and the ends closed on the pole of the constant current source 2 with a rheostat 3 (or autotransformer type Latr), steel plate detail 4 protective airtight doors, hatches or flanges of tubular engineering services with evenly raspolozhennymi her holes 5 to install injectors 6, through these cracks and leaks junctions metal-concrete is pumped magnetic sealing compound (for example, epoxy resin or the water-cement mixture with a fine powder of magnetite or other ferromagnetic filler), and the uprights of the U-shape magnetic core 7, in which each of the lower part 8 is fully consistent shape, size and dimensions of the internal space of the hole (for the injector) and is fixed in it based on the known classes of compounds, and the applicable tolerances. In this case, the height of the bottom of each rack of the magnetic circuit of the electromagnet is equal to the thickness of the steel plate parts, and the distance between the centers of cross sections of the poles of the magnetic circuit of the electromagnet is equal to double the distance between the centers of the holes for the injectors. The required parameters of the magnetic field (intensity and magnetic flux density) are controlled by the ammeter 9 on the magnitude of the current in the winding of the electromagnet in accordance with the data of experimental studies (see Annex - act testing device for sealing junctions metal-concrete walling protective structures and determine the parameters of the magnetic field on the surfaces of the steel plate parts with different thicknesses).
The technology of sealing of leaks at the points of contact m�Tull-concrete walling protective structures using the proposed device is organized as follows. The injection of the magnetic sealing mixture for cracks and looseness of contact metal-concrete is made in a bottom-up, starting from the very bottom of the fitting, which should be placed between the uprights of the U-shape magnetic core of the electromagnet. The injection is performed until, until the sealing compound will not appear in the hole for the injector located above the extreme stand is a U-shaped magnetic circuit of the electromagnet. Then, the discharge process is terminated prior to the setting of the magnetic sealing mixture in the discontinuities of the contact metal-concrete under the influence of a magnetic field, thereby avoiding draining from leaks and accelerates the curing process of the mixture.
After that the hole through which leakage occurred, it is cleared of sealing the mixture in it, as well as in the other hole for the injector located above the rack mounted U-shaped magnetic circuit of the electromagnet so that between them there was another hole for the injector, through which will be made next discharge cycle of the magnetic sealing mixture in the event of leakage of metal-concrete. The repetition of cycles of injection and curing of the magnetic sealing mixture leaks from the bottom-up organized process g�rotiserie leaky places of metal-concrete walling protective structures.
Then the leak-proof quality of the work is checked by testing of protective structures for leaks (usually a method to determine the pressure drop of air pumped into the building ventilation system, for regulatory time appropriate to the method of the normative document ).
To enter the magnetic sealing the mixture in the looseness of contact metal-concrete using conventional mortar pumps and hoses, and a special piston or screw syringes, able to create in the sealing mixtures of the discharge pressure in the range of 180-200 kPa.
Technical and economic efficiency - ensuring a higher quality of sealing of leaks at the metal-concrete, reduce the consumption of materials and energy consumption due to the increase of the magnetic field, also known as h and holding power in the magnetic volume of the sealing mixture.
Sources of information
1. Bocharnikov, A. S. Dispergouvannya composite materials based on cement binders for the protective structures: monograph / A. S. Bocharnikov. Edited by A. D. Korneev. - Lipetsk: lstu. - Pp. 202-203. - In Najah. Russian Academy of architecture and construction Sciences. Central branch.
2. Instructions for sealing technology of enclosing structures special structures
3. Bocharnikov, A. S. Magnetic sealing epoxy composites with fillers from waste products: monograph / A. S. Bocharnikov, M. A. Goncharov, A. V. Glazunov. Under the editorship of S. A. Bocharnikova. - Lipetsk. Publisher lstu, 2009. - S. 119. - In Najah. Russian Academy of architecture and construction Sciences. Central branch.
4. Bocharnikov, A. S. Dispergouvannya composite materials based on cement binders for the protective structures: monograph / A. S. Bocharnikov. Edited by A. D. Korneev. - Lipetsk: lstu. - S. 205. - In Najah. Russian Academy of architecture and construction Sciences. Central branch.
Device for sealing junctions metal-concrete walling protective structures containing steel plate detail defensively-tight doors, hatches or flanges of tubular engineering services, with holes in it for injectors, evenly spaced around the steel parts with equal distance between them, a constant current source with a resistor or autotransformer and an electromagnet, the mouth�blenny on steel detail with the coil in the form of a coil of conductive wire with insulation and the ends of this wire, closed pole of the DC source, wherein the solenoid coil is located on the crossbar of the U-shape magnetic core round or rectangular racks which are mounted on the surface plate steel parts between two adjacent injectors, characterized in that the lower part of the magnetic circuit of each rack is fully consistent shape, size and dimensions of the internal space of the hole for the injector and secured therein with the existing connections and operating tolerances in this case the height of the lower part of the uprights of the magnetic circuit is equal to the thickness of steel metal parts and the distance between the centers of cross sections of the poles of the magnetic circuit of the electromagnet is equal to double the distance between the centers of the holes for the injectors.
SUBSTANCE: invention relates to the field of construction, in particular, to the method to reinforce precast panels of cellular concrete surface. The method of reinforcement consists in the fact that the roof structure is opened along the seam of coupling of adjacent panels for the width of 300-400 mm. Then they cut through slots with width of 85-90 mm along the seams through the entire length of the panel, afterwards they insert longitudinal steel beams into the slots from the top, having gussets at the bottom to fix cross beams. Cross beams are connected to longitudinal beams and are connected by gussets with longitudinal beams by assembling bolts. Gaps between cross beams and the reinforced panel are filled with concrete, and gaps between longitudinal beams and side surfaces of panels are filled with construction foam. The slot above the surface of longitudinal beams is filled with a heat insulation material, then the roof design is restored, and steel reinforcing elements protruding beyond the ceiling surface are coated by protective materials.
EFFECT: increased bearing capacity of a coating panel.
4 cl, 8 dwg
SUBSTANCE: method to reconstruct a building or a facility includes installation of stiffening cores inside a building or their erection to perceive load from bearing elements of the building or facility carcass. Stiffening cores are installed with a gap in respect to reinforced spans of floors, under which bearing girders are mounted. Girders are fixed in stiffening cores at the depth of at least half of thickness of the appropriate stiffening core perpendicularly to the latter and are connected as fixed with spans. Spans are made in the form of crossbars and floors, or crossbars, or floors. Ends of bearing girders are embedded into stiffening cores.
EFFECT: increased stability of a building.
SUBSTANCE: invention relates to the field of construction and may be used for radical reinforcement of slabs exposed to durable impact of aggressive medium and having practically lost bearing capacity. The device to reinforce a solid reinforced concrete slab includes several reinforcement elements and comprises two additional solid reinforced concrete slabs arranged on the top and at the bottom and combined to each other by means of reinforced concrete keys. The lower slab is equipped with rods with helical thread at the ends, performing the function of the pre-stressed working reinforcement, connected on nuts with anchors, which serve as stops for them. Anchors are connected with the main slab as a dowel by epoxide glue. Keys are equipped with vertical rods performing simultaneously the function of working reinforcement of keys and function of suspension in fixation of the lower slab formwork. The surface of contact between the main and lower slabs is equipped with a layer of compound on the basis of epoxide resin preventing access of aggressive medium to working reinforcement.
EFFECT: increased bearing capacity, stiffness and crack resistance of a slab.
SUBSTANCE: method to reinforce structures of a building cover, comprising bearing structures, runs and an enclosure, consists in installation of reinforcement beams from channels resting against bearing structures between existing runs. In the areas of resting of reinforcement beams onto bearing structures they cut a section of an upper shelf of a channel, using welding, they fix a similar section at the opposite side, turning cross sections of the channel into a z-shaped one. Final installation of reinforcement beams is carried out by means of their rotation around the longitudinal axis.
EFFECT: reduced labour intensiveness during installation of a cover and increased reliability of joint operation of cover structures after reinforcement.
SUBSTANCE: invention relates to the field of construction, namely, to a support element designed for pasting-in into brick masonry and used in assemblies of slab support. The support element comprises a central rod and end anchor parts. The central rod is made of a concrete cylinder, having longitudinal corrugations on the outer side for better spread of an injectable formulation with depth of 0.1-0.5 cm and two transverse corrugations for installation of fixing rings with depth of 0.1-0.5 cm: an inner aligning ring in the form of a sprocket and an outer fixing ring with a reference hole in the upper part. In the centre of the cylinder there is a through hole for installation of the nozzle into it for injection of the chemical formulation.
EFFECT: increased strength of a support element.
3 cl, 3 dwg
SUBSTANCE: device to reinforce beam structures includes prestressed four-branch braced ties fixed at ends of the beam in its upper part, resting in areas of bending at hinged cylindrical supports with a pad, installed in the lower part of the beam and tightened by yokes. In the upper end zone of the beam there are angular profiles installed onto a footing, where braced ties are fixed as a tightened assembly.
EFFECT: increased bearing capacity due to balance of forces in all bands of a braced system.
2 cl, 4 dwg
SUBSTANCE: invention relates to the field of construction, in particular to protection against oxidation of the active and passive frames laid in the concrete mass. A method of injecting fluid into a porous material or a material having boundary lines, comprising the following steps is revealed in the invention: attachment of an injector to the indicated material, which defines the boundaries of a compression chamber at least with one surface of the indicated material; injection of the indicated fluid into the indicated compression chamber under low pressure; influence on the indicated fluid by an acoustic wave of high power by means of an oscillating element, passing directly into the indicated compression chamber.
EFFECT: provision of deep impregnation of surfaces or boundary lines of heterogeneous materials.
14 cl, 3 dwg
SUBSTANCE: invention relates to methods of reinforcing power constructions, which have existing or predictable collapsing sections, by means of strips of composition material. As strips used is woven or non-woven reinforcing filling agent from glass, basalt, synthetic polymer or carbon fibres. Said fibres are impregnated with polymer composition in amount 30÷60% from composite weight, providing their adhesion to power constructions and further hardening from +5°C to +100°C for from 5 minutes to two days. Polymer composition contains in wt %: epoxy resin 100, active epoxy diluent 5÷130, hardening agent 15÷110, thickening agent 5÷50, pigment or dye 0.5÷50. As gardening agent it contains product of interaction of amine component with monocarboxylic acids. as amine component used is mixture, consisting of primary aromatic amine or mixture of aromatic amines (A), secondary aliphatic amino alcohol (B) and tertiary aliphatic amino alcohol (C) in weight ratio A:B:C from 98:0.2:1.8 to 80:5:15. Monocarboxylic acid (D) is introduced in form of 25÷80% solution in monoatomic aliphatic or aromatic alcohol, or their ether with mono- or dicarboxylic acid, in ratio (A+B+C):D from 90:10 to 60:40 counted per 100% acid with further interaction by mixing in reactor at temperature from 50 to 130°C for from 20 to 120 minutes at rate of mixer from 100 to 3000 revolutions per minute.
EFFECT: increased adhesion of reinforcing strips from composition materials to the surface of constructions and their more effective reinforcement are provided.
SUBSTANCE: in the method to repair a building facade, including dismantling, of at least a part of masonry of oil facing bricks and development of new masonry of facing bricks with fixation on the bearing wall of the building, according to the invention, development of new masonry and its fixation is done by fixing anchors in the bearing wall of the building, onto which horizontal rows of reinforcement are laid, on each of which, using mortar, they lay several rows of bricks with a gap relative to the bearing wall of the building, at the same time the first and last rows of the new masonry of facing bricks are arranged with horizontal ventilation gaps in respect to the old masonry. Besides, as the masonry is fixed onto the bearing wall of the building, in the specified gap they lay mortar in the form of vertical strips that connect areas of fixation of anchors, for additional fixation of bricks and elimination of anchor corrosion.
EFFECT: increased service life of a repaired facade of a building without change in its appearance, elimination of moisture condensation on a facing brick and in a facing brick due to formation of a ventilation gap in the facade, due to which a directed air flow from bottom up, which carries away warm moist air from a wall, preventing moisture condensation, increased service life of a facade happens due to suggested reliable fixation of facing brick masonry on a bearing wall of a building.
SUBSTANCE: reconstructed building includes the old building with foundation and upper overlapping, additional foundation located lengthwise outer perimeter of the old building, vertical columns located on additional foundation with at least one interfloor overlapping located above the old building, and overlapping installed on upper part of vertical columns and connected to them, and walls fixed between vertical columns. Reconstructed building contains in addition at least one load-bearing suspension located above the old building and connected to the mentioned overlapping. Additional foundation is made so that its loading is out of the area of power impact of the old building on the foundation. Overlapping is designed as load-carrying structure. Interfloor overlapping is connected to load-carrying structure by at least one load-bearing suspension, it is mounted in direction from load-carrying structure to upper overlapping of the old building and is designed with possibility of interaction with vertical columns.
EFFECT: improving operating reliability of reconstructed building.
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.
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
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.
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.
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
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.
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.
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
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: road construction.
SUBSTANCE: device has towed device with platform, connected to moving gear, tank for reinforcing liquid, force pipes with bars with apertures in lower portion. Bars are made of conical shape with screw blades, mounted on a platform made in form of slides, and radiuses of bars effect overlap. In back portion of platform a screw is mounted. Tank for reinforcing liquid is placed in front portion of platform and by gear pump is connected to distributing comb, each force pipe, which through locking armature is connected to appropriate bar. Bars in amount no less than three are kinematically connected to each other, and to shaft for drawing power from moving gear, to screw and to gear pump for feeding reinforcing liquid.
EFFECT: higher efficiency.