Injector

FIELD: mining and building, particularly for rock strengthening and building structure reinforcement, namely for hardening liquid introduction.

SUBSTANCE: injector comprises supply pipeline provided with outer threads at inlet and outlet ends. The pipeline also has expandable hose and integrated check valve with longitudinal channels. The valve is closable in direction towards inlet pipeline end. The hose encloses the pipeline in air-tight manner by end parts thereof so that elongated annular space is created in-between. Transversal channels are created from one side of annular space in pipeline wall. Channel heads are closed in annular space with elastic sealing rings retained by neighboring fixing rings from both sides. Breakable disc and threaded bush with inner radial bridge are installed from end side of outlet supply pipeline end. The breakable disc is secured by means of pressure ring with cutting inner edge. The check valve comprises ball pressed against longitudinal channel head in supply pipeline, pressure spring and support ring. End of ring brought into contact with breakable disc is provided with transversal slot. Inner diameter of pressure ring is greater than inner diameter of support ring but is less than inner diameter of radial bridge in threaded bush.

EFFECT: improved injector adaptability to in-situ conditions.

3 cl, 3 dwg

 

The injectors are used as auxiliary tools in mining, underground construction, and rehabilitation of facilities for injection, for example, cement slurry, synthetic resin, liquid glass, and the like in rock or stone masonry. Using these impregnating liquids should be strengthened rock or masonry. In addition, can be achieved seals.

From DE 4209802 C1-known injector, which turned out to be suitable for practical application. However, experience has shown that improper manipulation, namely at the input of the injector into the well, usually there is destruction of the feed pipe inside the blown hose when the supply pipe is composed of synthetic material. The reason for this is annular groove, covering the supply pipe in the area of transverse channels, which connect the longitudinal channel in the delivery pipe with the annular space between the feed pipe and blown hose, for orientation closing the mouth of the transverse channels of the sealing ring, which reduces the cross-section of a feed line. The result is a defective injector.

Such injector is also disclosed in application EP 0398838 A1.

Application DE 2402509 A1 discloses a tubular one-way injector for injection of artificial resin, which has a nozzle with a similar coupling the input and output parts. On the input and output parts of the section of the hose of flexible material is fixed clamping buckles. On the output side is a check valve with a ball and axially directed force clamping the split pin. If the ball is in the hole of the power coupling split pin, the slot in the power coupling split pin serves as a throttling area for the injected medium. In addition, the average area of the pipe is provided here of transverse channels is not weakened by the circumference of the through grooves.

Application DE 3014834 A1 discloses for specialist injector with open transverse channels between the annular space that is formed through the rubber hose and pipe, and the inner part of the socket. Transverse channels provided by eccentric annular space. Also, the inlet end and outlet end of the installed check valves.

The basis of the invention, proceeding from the prior art, is the task of creating a flexible, adaptable to the respective local conditions injector that even if improperly handled, can easily RA is to rely in the hole.

This task is accomplished according to the invention by the characteristics of paragraph 1 of the claims.

Through the use of a feed line of synthetic material (hose or pipe, for example, from a thermoplastic, preferably ABS-copolymer) in conjunction with the fact that the check valve is provided not on the inlet end and the outlet end of the feed pipe, now, depending on local conditions, the user of the injector can be used, in principle, unlimited long supply pipe, so as to supply the end caused only an outer thread, which serves as a connector by applying a sealing liquid. Thus, the flexibility to enter the injector increases.

Particularly preferred, furthermore, is the event consisting in that the impregnating liquid is introduced now with ends formed between the feed pipe and inflate the tubing annulus through the cross channels. Thus, it can be achieved more uniform filling of the annular space and yet provides improved jamming inflate the hose relative to the wall of the hole for fixing the position of the injector.

The supply pipe in the area of transverse channels is not weakened in cross section. Consistent with p the pepper channels of the sealing ring opposite are held in their positions by means of retaining rings, which are provided on both sides of the sealing rings. Regarding the material of the elastic retaining rings, we can talk in particular about the rubber rings, which are, however, tightly hug the supply pipe so that their position on the feed line is fixed and they securely hold the sealing ring.

Through the distribution of transverse channels are axially spaced from each other in the region of the ends of the annular space, and through elimination of circumferential grooves substantially increases the stability of the feed pipe, so that even the careless manipulation of the injector may not lead to the destruction of a feed line.

Check valve and destroyed the disk together is provided on the outlet end of the feed line. Destroy the disk is located on the end side of the discharge end and is installed through having an inner sharp edge of the pressure ring through the threaded coupling with the inner ring radial jumper. Internal sharp edge ensures that when created inside the injector pressure destructible disk is pressed against this sharp edge and is destroyed as soon exceeded a preset resistance. The inner diameter of the pressure ring depends on, respectively, n is necessary destructive pressure of the destroyed disk or, respectively, the required flow rate impregnating liquid. Threaded coupling, if necessary, can be formed as double-threaded couplings, so that additional internal thread, if necessary, can be installed even forming a lengthening of the injection pipe.

Using the fact that, according to paragraph 2 of the claims provided at the end of the annular space in the wall of the feed pipe transverse channels are circumferentially offset by 90° relative to each other, is achieved further increases the stability of the feed line.

Additional preferred characteristic of the invention is seen in paragraph 3 of the claims. In accordance with the discharge end of the blown hose has a fixed position on the feed line. This not only eliminates undesirable relative displacement of the feed pipe to inflate the hose, but also ensures that when filling the annular space and the pressure inflate the hose to the wall of the bore discharge piping may make the relative offset only lead to the end of the blown hose.

According to paragraph 4 of the claims, the check valve is formed from a ball, pressed against the mouth of the longitudinal channel in a feed line, a compression spring and a supporting ring. The support ring is screwed in the you thread the discharge end of the feed line. The compression spring, in particular, in the form of a helical compression spring rests on one side on the support ring, and on the other hand on the ball. For improved manipulation of the support ring provided with a transverse groove, which is located in the end side in contact with the destroyed disk.

The function of the destroyed disk according to the signs of paragraph 5 of the claims is optimal fixation, if the internal diameter of the pressure ring is formed larger than the inner diameter of the supporting ring, but smaller than the inner diameter of the radial crosspieces into the threaded sleeve.

Below the invention is explained in more detail through the drawings of the embodiments of the invention.

In the drawings shown:

1 is a vertical longitudinal section of the injector;

2 is a enlarged view of the section II of the length of the injector of figure 1 while supplying a sealing fluid;

3 in an even more enlarged view of area III of figure 1 according to another variant implementation.

Figure 1 presents the stopper 1 hole it can find application, for example, to harden the rocks in a closed mountain development and to seal cracks and gaps in the rock due to the fact that through the stopper 1 hole in the rock is injected impregnating liquid is th TF, for example, a cement slurry.

The stopper 1 hole is longitudinally channeled the supply pipe 2 made of synthetic material, such as reinforced fiberglass acrylic-butadiene-styrene. At the inlet end 3 of a feed line 2 for impregnating fluid TF is provided external thread 4, which may be joined, for example, a pipeline, which brings a sealing fluid TF.

At the outlet end of the feed pipe 5 2 (1 and 3) is provided with male screw 6, which is screwed is made of polypropylene threaded sleeve 7 with internal thread 8. In the embodiment, the threaded sleeve 7 is formed as a double-threaded couplings, and serving as a connection with the feed pipe 2 internal thread 8 is separated by internal jumper ring 9 from additional internal thread 10. This additional internal thread 10 installs injector pipe 11, if necessary, the use of such injection pipe 11. Instead recorded double-threaded bushing 7 can also be used simple threaded coupling without the site with additional internal thread 10.

At the outlet end of the feed pipe 5 2 longitudinal channel 12 is expanded. In a discharge end 5 is provided elongated cylindrical section 13 and the threaded section 14. Nadolny channel 12 passes through the conical section 15 in the elongated cylindrical section 13. Transition edge 16 from the longitudinal channel 12 to the conical section 15 serves as a sealing edge for the steel ball 17, as an integral part of the check valve 18. The check valve 18 additionally has a spring 19 in the form of a helical compression springs made of spring steel, which on the one hand rests on top of the ball 17, and on the other hand on the support ring 20 is made of brass, which is screwed into the threaded section 14 and the outlet end 5. In the support ring 20 is provided by a longitudinal hole 21, which is in the direction of the spring 19 moves in the drop-down conical section 22. On the other side of the support ring 20 has a transverse groove 23, which is provided for manipulation of the support ring 20.

The threaded sleeve 7 together with pressure ring 24 made of steel is used for installation of the destroyed disk 25 aluminum on the front side 26 and the outlet end 5 of a feed line 2. It is important that reaching bearing on destroying the disk 25 and the inner edge 27 of the pressure ring 24 is formed with a sharp edge. Moreover, for reliable operation of the destroyed disk 25 inner diameter of the pressure ring 24 is formed larger than the inner diameter of the longitudinal hole 21 in the bearing ring 20, but smaller than the inner diameter of the radial crosspieces 9 into the threaded sleeve 7.

The stopper 1 hole further comprises, as a visual what about the present figures 1 and 2, covering the supply pipe 2 blown hose 28. The ends 29, 30 blown hose 28 is pressed by a steel clamp rings 31 to the outer surface 32 of the feed pipe 2. Thus, between the feed pipe 2 and inflate the hose 28 is formed longitudinally passing through the annular space 33. In addition, it can be seen that adjacent the discharge end of the feed pipe 5 2 the end of the 30 blown hose 28 has an internal annular recess 34, in which is inserted firmly covering the supply pipe 2 retainer ring 35 made of steel. This retainer ring 35 has the task of fixing the location of the blown hose 28 to a feed line 2, when the impregnating liquid TF through the longitudinal channel 12 of a feed line 2 and terminating in the annular space 33 of the transverse channels 37, which are provided in the wall 36 of the feed pipe 2, flows into the annular space 33 to clamp blown hose 28 to detail not shown the wall of the bore. While adjacent to the outlet end 5 of a feed line 2 to the end of the 30 blown hose 28 remains tightly adjacent to the supply pipe 2, while the supply pipe 2 can relatively move to the other end 29 inflate the hose 28.

The mouth 38 of the transverse channels 37 in the ring p is stranstvo 33 closed elastic sealing rings 39 of rubber. On both sides next to the sealing rings 39 are locking ring 40, preferably also made of elastic material, for example rubber, which, however, firmly cover the supply pipe 2. These retainer rings 40 serve to guide the sealing ring 39.

After entering the stopper 1 hole of figure 1 in detail not shown hole in a mining face closed mining supply pipe 2 is loaded through the inlet end 3 of the impregnating fluid TF. As destructible disk 25 prevents leakage of sealing fluid TF, impregnating fluid TF of the longitudinal channel 12 of a feed line 2 according to the arrows PF of figure 2 through the cross channels 37 enters the annular space 33, and the sealing ring 39 stretched and blown hose 28 is clamped in the wall of the bore. With further increase of pressure impregnating fluid TF destroy the disk 25 at a preset pressure collapses upon further exposure to sharp edges 27 on the compression ring 24, so then impregnating fluid TF through the check valve 18, the support ring 20, the control ring 24 and the threaded sleeve 7 can log in located behind them plot holes and rocks.

The check valve 18 prevents backward flow of permeate is hidcote TF in the longitudinal channel 12 of a feed line 2, while the sealing ring 39, surrounding the transverse channels 37, prevent the reverse flow of the impregnating fluid TF from the annular space 33 in the longitudinal channel 12, when the impregnating fluid TF is no longer supplied.

1. Injector containing the supply pipe (2), which at its inlet end (3) provided with an external thread (4), and at its outlet end (5) - external thread (6), as well as having integrated, locking in the direction towards the inlet end (3), longitudinally channeled check valve (18) and blown hose (28), which tightly covers the supply pipe (2) with its end sections (29, 30) with the formation of long annular space (33), and with one side of the annular space (33) in the wall (36) of a feed line (2) is provided by the transverse channels (37), the mouth (38) which are closed in the annular space (33) of the elastic sealing ring (39)which is positioned adjacent both sides of the locking ring (40), and from the front side and the outlet end (5) of the feed pipe (2) is destructible disk (25) by means of the pressure ring (24) with a cutting internal edge (27)and the threaded sleeve (7) with internal radial jumper (9), and reverse the valve (18) is formed from a ball (17), close to the mouth (16) of the longitudinal channel (12) in the next pipeline (2), a pressure spring (19) and support ring (20), the end face which is in contact with collapsible disc (25), provided with a transverse groove (23), and with the inner diameter of the pressure ring (24) is larger than the inner diameter of the support ring (20), but less than the inner diameter of the radial crosspieces (9) into the threaded sleeve (7).

2. The injector according to claim 1, which is provided on one side of the annular space (33) in the wall (36) of a feed line (2) transverse channels (37) are located at the periphery of the offset relative to each other by 90°.

3. The injector according to claim 1 or 2, in which position the outlet end (30) blown hose (28) on the feed line (2) is fixed.



 

Same patents:

FIELD: oil and gas industry, particularly to isolate reservoirs in water inflow zones with the use of plugging compositions based on artificial resin curable under reservoir conditions.

SUBSTANCE: method involves injecting plugging composition curable under reservoir conditions in production or injection well; forcing thereof to isolation interval and holding the plugging composition in isolation interval to provide curing and strength development thereof. The plugging composition includes artificial resin, hardener and water. The artificial resin is urea-formaldehyde resin. The hardener is drilling reagent Okzil-SM and aluminum salt crystalline hydrate: chloride AlCl3·6H2O or sulfate Al2(SO4)3·18H2O or alum - Al(K)(SO4)2·12H2O. All above components are taken in the following amounts (% by weight): urea-formaldehyde resin - 60, Okzil-SM - 1.0-3.0, aluminum salt - 0.1-5.0, remainder is water.

EFFECT: increased reliability and efficiency of reservoir isolation.

2 tbl

FIELD: oil and gas industry, particularly for water inflow isolation and for remedial cementing of production and injection wells in high-temperature reservoirs.

SUBSTANCE: method involves injecting acrylamide polymer composition in well. The composition includes aqueous solution of cross-linking agent and acrylamide polymer having molecular mass of not more than 1 million and degree of hydrolysis of not more than 0.5% so that hydrolysis is carried out at 70°C reservoir temperature to form strong gel in cross-linking agent presence. The acrylamide polymer is nonionic acrylamide polymer. The cross-linking agent is chromium acetate or urotropin with hydroquinone. The composition may additionally have gelling control agent, for instance weak organic acid, namely sulphosalicylic acid. Composition may comprise 1-7% by weight of acrylamide polymer, 0.1-0.5 % by weight of cross-linking agent, 0-1.0% by weight of gelling control agent and water as remainder. Optimal composition formulation is chosen with taking into consideration of gelling kinetics and filtering composition properties obtained as a result of laboratory research.

EFFECT: increased efficiency due to increased isolation quality, increased injection depth and strength of structured isolation composition formed in watered area, extended temperature range of polymeric composition usage.

6 cl, 1 ex, 1 tbl, 2 dwg

FIELD: oil and gas production industry, particularly to prevent annular gas flow.

SUBSTANCE: method involves cutting window in casing pipe within productive pool cap interval; removing casing pipe area occupying 20-80% of cap thickness; removing plugging material within above casing pipe interval to be removed; expanding well bore in casing pipe window so that final well bore diameter exceeds dimension of plugging material filtering area obtained by primary casing pipe plugging and is more than dimension of residual stress zone formed by primary and secondary cap penetration. The well bore is expanded in several stages so that well bore diameter is increased by not more than 10% at each stage and so that final well bore diameter exceeds dimensions of above residual stress zones for 10-40%. After that the expanded section is covered with lining and space behind the lining is plugged with non-hardening plugging material, for instance with visco-elastic composition based on polyacrylamide, hydrolyzed polyacrylonitrile or natural or synthetic latex or with hardening plugging material in which resilient material particles are added. The particles are made of rubber or are formed as gas-filled microspheres.

EFFECT: increased air-tightness of casing annulus.

3 cl

FIELD: methods or devices for cementing, plugging holes or the like, particularly grouting mortars to cement casing pipes in gas, gas condensate or oil wells complicated with presence of loosely bonded rock liable to hydraulic fracturing.

SUBSTANCE: grouting mortar comprises 48.46-60.00 % by weight of plugging Portland cement; 0.01-0.07% by weight of polyacrylamide Praestol and 33.33-41.15 % by weight of calcium chloride having density of 1.03 g/cm3 or calcium and sodium chloride solutions with 1.03 g/cm3 density.

EFFECT: reduced weight and water loss capacity, possibility to obtain cement stone having increased binding ability to casing pipe.

1 ex, 1 tbl

Mudding device // 2271436

FIELD: deep water, oil and gas well drilling technology and equipment, particularly to provide air-tightness and strength of well walls in zone of permeable rock penetration by mudding thereof.

SUBSTANCE: mudding device nozzles are installed at 45° angle to longitudinal axis of device body and the nozzle exit ends face each other. Distance from nozzle exit ends to point of liquid flows generated by the nozzles intersection is equal to L1=(2.5-3)d, where d is inner nozzle diameter. Distance from above point of intersection to well wall is equal to L2=(3-3.5)d.

EFFECT: increased efficiency and reliability due to increased area of low-permeable screen to be formed.

1 dwg

FIELD: methods or devices for cementing, plugging holes, crevices or the like.

SUBSTANCE: plugging composition comprises silicone composition, water, curing agent, namely hydrochloric acid, and modifier. The silicone composition is silicone fluid, the modifier is stock-tank oil. All above components are taken in the following amounts (% by weight): silicone fluid - 75.8-92.5, hydrochloric acid - 0.4-2.4, water - 0-16.7, stock-tank oil - 1.7-5.1.

EFFECT: increased plugging capacity along with reduced expensive silicone composition consumption.

1 ex, 2 tbl

FIELD: oil and gas production.

SUBSTANCE: lightened grouting mortar, designed to shut off levels with abnormally low formation pressures, contains, wt %: Portland cement 85, hollow aluminosilicate microspheres 15, nitrogen 0.035-0.04 (above 100%), and water 45-60.

EFFECT: reduced density of mortar below 1400 kg/m3 with preserved physico-mechanical properties meeting standard requirements for lightened grouting mortars.

3 dwg, 3 tbl

FIELD: oil and gas production.

SUBSTANCE: waterproofing capacity of grouting mortar is enhanced when carrying out waterproofing operations in oil and gas wells is increased owing to expansion of values of silica modulus from 3.5 to 5.0. To that end, in a method of preparing grouting mortar, comprising dissolution of sodium silicate block in presence of water at heating and mixing of resulting liquid glass (aqueous sodium silicate solution) with modifying additive, water, and organic hardener, (i) said modifying additive is represented by silica filler "Rosil-175", which is added during above-mentioned dissolution at ratio of 27-50 wt parts to 100 wt parts sodium silicate block and 200-300 wt parts water, after which the total is mixed until silica modulus 3.5-5.0 is reached and modified liquid glass is obtained; and (ii) said organic hardener is formamide. Following proportions of components are used, wt parts: modified liquid glass 100, water 10-25, formamide 10-25 or ethyl acetate in presence of Neonol AF 9-12 is used at following proportions of components: modified liquid glass 100, water 100, ethyl acetate 5-10, Neonol AF 9-12 - 1.

EFFECT: enhanced waterproofing capacity of grouting mortar.

3 tbl, 9 ex

FIELD: oil and gas well drilling, particularly methods or devices for cementing, for plugging holes, crevices, or the like.

SUBSTANCE: method involves determining interval of mud loss formation to be isolated; lowering drilling string up to loss zone reaching; injecting hardening plugging mix of grouting mortar with fibrous filler into the well with the use of cementing unit, wherein the fibrous filler is supplied into grouting mortar during injection operation via funnel installed at upper end of drilling string. Before carrier mortar preparation connection pipe attached to mixer receptacle of cement mixing machine and adapted to supply pressurized mixing water with the use of jet pump of cementing unit is substituted for connection pipe having lesser diameter, namely 8-9 mm diameter. The connection pipe with lesser diameter provides carrier mortar preparation and injection into well at rate of 7-8 m3 per hour, wherein the carrier mortar is based on cement, bentonite cement or mud solution. The filler, namely cord fiber or cotton waste is supplied in amount of 25-50 kg per 1 m3 of the carrier mortar. After plugging mortar feeding termination the funnel is separated from the drilling string and replaced for sealing head. The plugging mortar is forced under pressure in the loss formation.

EFFECT: increased isolation efficiency, reduced time and decreased material consumption.

FIELD: oil and gas industry, particularly isolation materials adapted to case wells and to isolate formations.

SUBSTANCE: insulation material comprises spent clay drilling mud having predetermined density, polyacrylamide, gel-forming agent, namely liquid glass, and polyethylenepolyamine. The polyethylenepolyamine includes diethylenetriamine, triethylenetetramine and triethylenepentamine. Above components are taken in the following amounts (% by clay drilling mud weight): polyacrylamide - 0.05-1.00, liquid glass - 0.1-1.5 and polyethylenepolyamine - 0.01-0.2.

EFFECT: increased structural properties, increased stability and reduced filtering ability.

1 ex, 1 tbl

FIELD: building, particularly to form base member in ground.

SUBSTANCE: method involves introducing excavation device in ground zone to loose the ground; mixing the loosened ground with liquid to obtain suspension, which hardens in the ground zone; before suspension hardening the suspension is drawn-off from the first ground zone area located above the second ground zone area; supplying at least part of suspension drawn-off from the first area back into the second ground zone area. Device for base member production comprises excavation rig adapted to loosen ground in ground area; supplying means to supply liquid to loosened ground and mixing means to mix loosened ground with liquid to obtain hardening suspension. The device is provided with outlet device to draw-off the suspension from the first ground zone area and supply device to repeatedly supply at least part of suspension drawn-off from the first area to the second ground zone area.

EFFECT: increased quality of base and foundation member production.

9 cl, 1 dwg

FIELD: building, particularly to reconstruct underground structures and reinforce foundations and engineering services in confined space.

SUBSTANCE: method involves reinforcing foundation in vicinity of existent structures; building vertical tube with the use of well rings; excavating ground with the use of grab; breaking tunnel liner and driving tunnel. Method of foundation reinforcement near existent structures involves injecting quick-setting cement mix through perforated pipes installed in wells drilled through support foundation part and ground; drilling guiding wells beyond vertical tube below upper tunnel level and ground water level; providing guiding wells with casing pipes; injecting grouting mortar in ground through casing pipes up to grouting mortar appearance at well head; installing well rings having perforation orifices along ring perimeters and installing injectors in above orifices; additionally reinforcing contour part of vertical tube by supplying grouting mortar through orifices in well rings; breaking tunnel link section after well ring laying onto upper liner plate of deep tunnel by cutting orifices having necessary dimensions; removing tunnel link section and seating well ring on rock base; concreting well ring; forming two orifices in well ring before tunnel driving arranged in direction of tunnel reconstruction; driving the tunnel and installing support members.

EFFECT: extended field of usage, reliability and safety of operations.

4 dwg

FIELD: building, particularly technology and equipment for structurally unstable ground, for instance for industrial and civil building.

SUBSTANCE: method involves drilling well; forming longitudinal stress concentrator on wall thereof, locking upper well part along with injection zone separation; introducing binder under pressure in ground and forming plane of fracture in ground. Longitudinal concentrator is created by advancing, impressing and subsequent rolling of sliding punch-type rotary lentil-shaped disk within injection zone. The disc is connected with retainer through stop member. Upper well part is closed by filling gap between well wall and binder introduction means with quick-hardening material. Binder introduction means is made as perforated tube formed of elastic material and having diameter lesser than well diameter. Stress concentrator forming means has tube, head and cutter arranged in groove of the head. The cutter is made as sliding punch-type rotary lentil-shaped disk and connected to retainer by stop member including clamp and fork.

EFFECT: increased efficiency.

2 cl, 6 dwg, 1 ex, 1 tbl

FIELD: building, particularly to consolidate building or building structure foundation base.

SUBSTANCE: method involves driving injectors in ground; supplying high-pressure grout through ejectors; recording and measuring mortar pressure and forming grout body. Grout is injected simultaneously through three injectors installed in apexes of imaginary equilateral triangle with side dimensions equal to 5-10 injector diameters. Grout body forming is performed by driving and following lifting injectors for height equal to 1-3 injector diameters before start of grout supply to ejectors.

EFFECT: reduced labor inputs and increased efficiency of ground base consolidation due to providing of predetermined grout body shape in horizontal grout breaking plane.

3 dwg, 1 ex

FIELD: building, particularly to consolidate building or building structure foundation base.

SUBSTANCE: method involves driving injectors in ground; supplying high-pressure grout through ejectors; recording and measuring mortar pressure and forming grout body. Grout is injected simultaneously through at least three injectors installed along straight line and spaced equal distances one from another. The distances are equal to 5-10 injector diameters. Vertical grout body orientation is provided by driving injectors up to given mark reaching with following partial lifting thereof for height equal to 10-20 injector diameters and with their fixation at predetermined level before start of grout ejection process.

EFFECT: increased efficiency of ground base consolidation for ground of all types due to performing ground compaction along with forming vertical grout body of predetermined shape.

4 dwg, 2 ex

FIELD: building, particularly for reinforcing soft and sagging ground at deep locations during building foundation construction and reconstruction, for protection of sliding natural slopes, as well as artificial dam, pit and trench slopes.

SUBSTANCE: method involves forming cylindrical cavity from ground surface; reinforcing cylindrical cavity walls by means of soil pipe and injecting hardening mix by pumping thereof into ground through injector. In the case of consolidating ground having high thickness cylindrical cavity is formed and reinforced with the use of soil pipe by vibratory driving thereof in ground. Soil pipe has auxiliary tube arranged coaxial to soil pipe and having outer diameter determined from a given relation. When soil pipe reaches upper boundary of soft ground layer to be consolidated the auxiliary tube is removed from soil pipe. Injector is deepened for the full soft ground layer thickness through the soil pipe and hardening mix is intermittently fed through the injector. After each hardening mix feeding operation injector is lifted for height corresponding to next gap to be filled with the mix. All injection operations in one consolidation point are performed during relaxation of ground compacted by soil pipe and injector driven in ground.

EFFECT: increased capacity, reduced time and labor inputs, improved technological effectiveness.

3 cl, 4 dwg, 2 ex

FIELD: building, particularly for reinforcing foundations and cast-in-place piles forming.

SUBSTANCE: device comprises percussion assembly including pneumatic drift and case surrounding thereof, as well as pipeline with pump. Case is rigidly secured to percussion assembly. Case comprises orifice made in front part thereof and adapted for receiving plug. Defined between the plug and the front part is cavity having cross-sectional area equal or more than that of pipeline located between percussion assembly and the case. Case has members for forming holes in ground located along longitudinal case axis and extending in radial direction thereof. The members have low rigidity and may be bent in radial direction. The members are provided with grooves formed in bending line thereof and rest brought into contact with case in extreme position.

EFFECT: increased efficiency.

7 cl, 7 dwg

FIELD: protection of ground and underground water pollution with toxic chemical substances, particularly forming antifiltering screens around waste disposal areas, dumps, for producing water reservoirs, building vessel coatings, mud reservoirs and store facilities for oil products and building materials.

SUBSTANCE: method involves forming water-proofing mixture including polyethylene waste; laying thereof on store facility base and heat treating the mixture under temperature of mixture or upper store facility layer melting. The mixture includes waste polyethylene in amount of 70-99% and polypropylene in amount of 1-30%.

EFFECT: improved ecological safety and manufacturability, reduced cost for antifiltering screen forming, increased strength, reliability and extended trouble-free service life.

Heated pile // 2250302

FIELD: heat engineering constructions.

SUBSTANCE: invention can be used as supports of different construction on permafrost. Proposed heated pile has reinforced concrete or metal shaft with inner or outer heated pipe in form of ribbed evaporator and condensers provided with metal strip ribbing arranged over ground surface with inclination to vertical part of shaft. Novelty is that heated pile is made T-shaped, and heated pipe in form of ribbed evaporator is made symmetrically double relative to axis of shaft with connection of some ends or its evaporators, other ends being connected with condensers. Evaporator ribbing is made in form of upward convex ring surfaces with central passes secured on inner surfaces of walls of heated pipe evaporators and uniformly distributed in height, and metal strip ribbing of condensers is element of horizontal part of T-shaped heated pile.

EFFECT: improved efficiency of heated pile, facilitated replacement of pile in case of failure.

2 cl, 4 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.

4 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.

4 dwg

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