Method for extraction of mineral resources and device for realization of said method

FIELD: mining industry.

SUBSTANCE: method includes opening productive bed by product slanting well, casing the well by pipes column, mounting well block with concentrically positioned pipes columns, lift and hydro-monitoring headpiece, hydro-monitoring erosion of bed and raising formed mixture of rocks by said lift to surface. According to method, opening of productive bed is performed using product slanting well and its casing is performed by displacing outer pipes column of well block along well axis and concurrent rotation of inner pipes column, hydro-monitoring headpiece is inserted inside outer column of pipes of well block, and during erosion of bed it is pulled out of outer pipes column of well block. Device for realization of said method is made in form of well block, including as common parts concentrically placed pipes column, outermost of which is casing column of well, and inner one is provided with headpiece with lift, hydro-monitoring headpiece and pressurizing element, and portal in form of two-passage swivel for feeding water and draining pulp. Pressurizing element is mounted at end piece above hydro-monitoring headpiece and is made in form of cylindrical shelf. To limit movement of inner pipes column relatively to outer pipes column, at lower end of outer pipes column a bushing is mounted with possible interaction with cylindrical shelf, outer diameter of which exceeds inner diameter of bushing.

EFFECT: higher efficiency, lower costs, lower laboriousness.

2 cl, 4 dwg

 

The invention relates to mining and can be used in the development of solid minerals by way of a hydraulic borehole mining and the construction of underground storage tanks.

There is a method of hydraulic borehole mining of solid minerals, blocked unstable sedimentary rocks, including the opening of a productive layer vertical well, its equipment casing pipe up to the roof of the reservoir, mounting it on downhole equipment, erosion of the reservoir perpendicular to the axis of the well, leaving the sector 120° as a pillar for the safe placement of mining equipment above the well and hidroelektrik lifting the formed slurry to the surface [1].

The disadvantage of this method is in danger of collapse of rocks around a vertical borehole failure surface mining equipment.

The device for implementing this method is a downhole projectile with Central hydraulic ejector-type and coaxially spaced columns rigidly fixed relative to each other: external - water internal and for lifting the slurry to the surface, and also located perpendicular to the axis of the projectile jetting nozzle for washing reservoir [2].

The disadvantage of this device concludes the I in the poor performance of the projectile, the transverse dimensions of which are limited casing bore in which is mounted a shell.

Closest to the claimed technical solution is the way of a hydraulic borehole mining of minerals, including the opening of a productive layer of the mining inclined borehole, casing casing pipe, mounting it well shell with concentric spaced columns, pipes, hydraulic ejector, and a jet nozzle, a jet scour formation and ascent of the resulting slurry of the hydraulic ejector on the surface [3].

The disadvantage of this method is high time for the opening of the productive formation and development of the mining chamber, due to the need for consistent execution of drilling wells, installing it casing pipes, installation of downhole equipment, the development of the camera, the dismantling of the downhole equipment and the extraction well casing pipe.

A device for implementing this method, executed in the form of downhole projectile comprising concentric spaced columns of tubes, the outer of which is a casing of the well, and the interior equipped with a nozzle with hydraulic ejector, jet nozzle and the sealing element, and a cap in the form of a two-pass swivel the La water supply and delivery of the pulp [4].

The disadvantage of this device is the high cost of time due to installation in the well first casing pipes, and then the inner pipe string, the downhole equipment, and the inability to use the apparatus for drilling a well.

Our problem is to increase the efficiency of the method by reducing the time required for borehole drilling, casing, mounting and Dismounting of the downhole shell and removing the casing pipe.

The solution of this task, the following benefits occur:

- Reduced costs of time practicing underground chamber 2 times due to combination of drilling operations, the casing and installation of downhole shell.

- Increase the potential production from the underground chamber for reducing the time of the testing ground, which reduces the magnitude of the stresses in the roof of an underground chambers and the intensity of the collapse of the overlying rocks.

- The ability to use downhole shell for drilling and casing wells, and the subsequent excavation of the productive formation due to the axial movement of the inner pulp-raising pipe relative to the outer columns.

The essence of the proposed method lies in the fact that in the way of a hydraulic borehole mining, including the opening of a productive layer of the mining inclined with whom vaginas, the casing of the column of pipes, installation of downhole shell with concentric spaced columns, pipes, hydraulic ejector, and a jet nozzle, a jet scour formation and ascent of the resulting slurry of rock hydraulic ejector on the surface, according to the proposed technical solution, the opening of a productive layer of the mining inclined borehole and the casing is carried out by moving the outer pipe string downhole of the projectile along the well axis and simultaneous rotation of the inner pipe string, while jetting nozzle is injected inside the outer pipe string downhole of the projectile, while the erosion of the productive formation it is removed from the outer pipe string, the downhole shell.

Moving the outer pipe string downhole of the projectile along the well axis and the simultaneous rotation of the inner pipe string at the opening of productive stratum mining inclined borehole and the casing significantly reduce the cost of overcoming the friction of the rock, when the casing and allow you to create thrust for mechanical destruction of the rocks on the bottom of a well, which intensifies the process of drilling.

Enter jetting nozzles inside the outer pipe string downhole of the projectile when sinking wells allows erosion of rocks on the bottom hole Col the eve stream, coming out of the external housing of the downhole projectile, without erosion of the rocks around the well, and remove the rock from the borehole bottom to the surface using hydraulic ejector. While the destruction of the rocks outside the borehole does not occur. A large stream of water coming out of a jet nozzle, also intensifies the process of opening compared to the installation of special nozzles of small diameter for jetting drilling. The rotation of the internal rod allows you to install it on the end of the drill bits, which also intensifies the borehole drilling.

Conclusion jetting nozzles of the outer pipe string downhole of the projectile when the erosion of the productive formation contributes to the rapid transition from a mode of drilling a well into production mode and does not require a separate supply of water in the borehole shell drilling and erosion of the layer.

Thus, the totality of these symptoms provides a solution to the problem of increasing the efficiency of the method hydraulic borehole mining.

The implementation of the task is achieved using a device for hydraulic borehole mining of minerals, made in the form of downhole projectile comprising concentric spaced columns of tubes, the outer of which is a casing of the well, and the interior equipped with a nozzle with hydraulic ejector is m, jetting nozzle and the sealing element, and a cap in the form of a two-pass swivel for water supply and delivery of the pulp. Thus, according to the proposed device, the sealing element is installed on the tip above the jet nozzle and is designed as a cylindrical projection. To limit movement of the inner pipe string relative to the outer bottom end of the outer pipe string is installed sleeve interoperable with a cylindrical projection, the external diameter of which exceeds the inner diameter of the sleeve.

Installation of the sealing element on the tip above the jet nozzle with the performance in the form of a cylindrical protrusion and installing the sleeve on the lower end of the outer pipe string, with the possibility of an interaction with a cylindrical projection, the external diameter of which exceeds the inner diameter of the bushing to allow rotation and axial movement of the tip relative to the outer pipe string without breaking the sealing element beyond and allow by use of this device as borehole drilling with simultaneous casing, and a fast transition from the drilling mode to the mode of extraction of minerals, which greatly improves the efficiency of its work.

The proposed technical solution is s illustrated in the drawings, showing:

Figure 1 is a diagram of the method of a hydraulic borehole mining of minerals at the stage of drilling-mining inclined borehole;

Figure 2 - diagram of the method of a hydraulic borehole mining of minerals on the stage of the erosion of the productive formation.

Figure 3 - diagram of the device with the ground installation.

Figure 4 - bottom of the device node.

These figures 1-4 shows: production well 1, which is passed to the productive formation 2. In an oil production well 1 is an external column pipe 3 borehole of the projectile, which is the casing for production well 1. External column pipe 3 borehole shell on the bottom end has a sleeve 4, which serves to limit the stroke of the inner pipe string 5. The inner column pipe 5 borehole shell connected at the bottom with the tip 6, within which are located the hydraulic ejector 7 and jetting nozzle 8. Tip 6 in the upper part has a sealing element 9 made in the form of a cylindrical projection. In the upper part of the borehole shell has a top 10 in the form of swivel for the supply of water and removal of raised slurry, and the rotary mechanism 11 for screwing the external 3 internal and 5 columns of tubes and rotation of the inner pipe string 5 in the process of drilling a borehole 1 and washout about aktivnogo layer 2, and the lift 12 to ensure that the movement of the inner pipe string 5 with respect to the outer pipe string 3. Well, the projectile is mounted on ground installation 13 in the carriage 14, which moves along inclined ramps 15 by means of a lifting winch 16.

The method is as follows. From the surface downhole projectile produces the opening of the inclined bore 1 of the productive layer 2 (figure 1 and 2). For this purpose, the specified angle is dipped downhole shell with concentric spaced columns of tubes 3 and 5, a hydraulic ejector 7 and jetting nozzle 8, which is injected inside the outer pipe string 3 borehole projectile. When drilling mining slant well 1 water from the pump through the pipeline is fed through the head 10 and the outer string of pipe 3 to the hydraulic ejector 7 and jetting nozzle 8. Water from the jetting nozzle 8 passes through the annular space between the outer casing pipe 3 and the tip 6 of the sealing element 9, creating a circular jet on hole 1, which blurs the rocks in front of the casing pipe 2. Blurry rocks in the form of a slurry of the hydraulic ejector 7 on the inner string of pipe 5 through the top 10 rise to the surface.

Boring mining slant well 1 external column pipe 3 serves as a casing, preventing the collapse of the walls with the vazhiny 1. The external column pipe 3 does only axial movement in the bore 1 without rotation, which reduces the friction on the walls of the well 1, and the simultaneous rotation of the inner column pipe 5 with respect to the outer pipe string 3 allows mechanical destruction of the breed on hole 1 and improves the absorption of the broken rocks of the hydraulic ejector 7.

After sinking wells 1 to productive stratum 2 proceed to the extraction of minerals (figure 2). For this purpose, the inner string of pipe 5 is lowered down relative to the outer pipe string 3 to lock the sealing element 9 made in the form of a cylindrical protrusion on the sleeve 4 mounted on the lower end of the outer pipe string 3, and output a portion of the tip 5 from the jetting nozzle 8 of the outer pipe string 3. Rotating the inner string of pipe 5, produce circular erosion of rocks of the productive layer 2 a stream of water from a jet nozzle 8, and the resulting slurry is sucked by the hydraulic ejector 7 and the inner string of pipe 5 raise to the surface.

When the occurrence of unstable rock, covering the reservoir 2, it may be collapsed into the treatment space with the formation of a failure on the surface, however, due to the inclined position borehole 1 her mouth is out of the gap, which ensures the safety of operations.

the donkey erosion of the productive layer 2 borehole, the projectile is removed from the borehole 1.

A specific example can lead to the extraction of buried zircon-ilmenite Sands. The reservoir 2, covered with sandy-clayey sediments of the open borehole 1 borehole projectile. For this purpose, a shell mounted on ground installation 13 at an angle of 60° to the surface and produce his immersion in the soil from erosion of rocks by the stream of water emerging from the annular gap between the sleeve 4 on the outer string of pipe 3 and the tip 6 of the inner pipe string 5. When this lift 12 raise the inner string of pipe 5 with respect to the outer pipe string 3 with input jetting nozzle 8 to the inside of the outer pipe string 3. Simultaneous rotation of the inner column pipe 5 through the rotation mechanism 11 produce destruction and crushing rocks on hole 1 with drills and cutters mounted on the lower end of the tip 6 (drilling cutters on the figure not shown).

The slurry rocks formed before the projectile is absorbed by the hydraulic ejector 7 and the Central pillar of the pipe 5 and the cap 10 is removed from the borehole 1. After diving submersible projectile to the section length of 10 m is set next section and continue the process of drilling a borehole 1. The outer casing of the projectile secured in the carriage 14, which moves along inclined ramps 15 and moves down the axis of the borehole accounts for the weight of the downhole projectile and effort up to 50 tons through polyspastny system winch 16 on ground installation 13. Thus, the well 1 to the productive layer 2 to a vertical depth of 50 meters Reaching productive layer 2, the inner string of pipe 5 is moved relative to the outer pipe string 3 so that the jetting nozzle 8 is released from the outer pipe string 3. During the rotation of the inner column pipe 5 with simultaneous immersion well of the projectile without rotation of the outer pipe string 3 produce a circular erosion of the productive layer 2 with the rise conceilment sand by hydraulic ejector 7 to the surface. The outer pillar tubes 3 borehole shell serves as a casing for the borehole 1. After working underground chamber downhole drill by means of a winch 16 AGI 13 is removed from the well 1 to the surface.

The failure surface of the erodible underground chamber is 30 m from the ground installation 13, so secure is mine sand. The angle of inclination of the borehole 1-60° ensures its safety in the process of working out of the underground chamber, as the basin of the rock covering the rocks in the first week does not go beyond the contour of the underground chamber, and the angle of displacement reaches the value of the angle of repose of 45° during the year.

The device for implementing the method shown in figures 3 and 4. It includes concentric raspolozhenennyh 3 and 5 internal pipe string, tip 6 with hydraulic ejector 7 and jetting nozzle 8. On the lower end of the outer pipe string 3 with the sleeve 4, the internal diameter greater than the external diameter of the tip 6. Tip 6 above jetting nozzle 8 has a sealing element 9 made in the form of cylindrical protrusion, the outer diameter of which is larger than the inner diameter of the sleeve 4.

In the upper part of the borehole projectile has a tip 10 for the supply of water and removal of the pulp, the lift 12 to move the inner pipe string 5 with respect to the outer pipe string 3, the rotary mechanism 11. Well the shell is mounted and controlled with the ground installation 13 having a carriage 14, which is installed in the inclined ramps 15 and connected to the winch 16.

The operation of the device is as follows.

The projectile is set in the ground installation of 13 (figure 3). Lift 12 inner column pipe 5 is moved upward relative to the outer pipe string 3 so that the jetting nozzle 8 was inside the outer pipe string 3 (figure 4).

Of ground water passage through the cap 10 and the outer string of pipe 3, the lug 6 on the jetting nozzle 8 and the hydraulic ejector 7 is supplied under pressure water and using the winch 16 is the descent of the projectile at an angle of 60°. The water from the nozzle 8 between the liners is Oh 4 on the outer string of pipe 3 and the tip 6 is released in the form of an annular jet and blurs the rocks on the bottom of the borehole 1, and the resulting slurry is sucked by the hydraulic ejector 7 and the inner string of pipe 5 and the cap 10 is removed to the surface. The sealing element 9 provides movement of the pressure of water to the jet nozzle 8 and the hydraulic ejector 7 during rotation and axial movement of the inner pipe string 5 with respect to the outer pipe string 3.

After the sinking of wells 1 inner column pipe 5 under its own weight or with the help of lift 12 is lowered with respect to the outer pipe string 3 to output a jet nozzle 8 of the outer pipe string 3. Using the rotary mechanism 11 is rotating inner pipe string 5 and erosion of the productive layer 2 jetting nozzle 8 (figure 2).

Sources of information

1. Bunbuku, Wiver. The design choices Malysheva field by way of a hydraulic borehole mining. Materials of the 1st Soviet-Yugoslav Symposium on the problem of borehole hydraulic technology. M, MGRI, 1991, p.19.

2. Bunbuku, Niyibizi, Wiver. The prototype hydroporinae unit for the development of placer deposits through wells. In Proc. of the Material composition, extraction and processing of ores of rare metals. M, Giredmet, 1985.

3. Ahrens VI, Bryukhovetsky O.S, Honan GH Well hydropobic coal. The tutorial. M, MHRA, 1995, p.64-65.

4. Painlev. - The e means of implementing downhole application of hydraulic technology. Materials of the 1st Soviet-Yugoslav Symposium on the problem of borehole hydraulic technology. M, MGRI, 1991, p.57.

1. Way of a hydraulic borehole mining of minerals, including the opening of a productive layer of the mining inclined borehole, the casing of the column of pipes, installation of downhole shell with concentric spaced columns, pipes, hydraulic ejector, and a jet nozzle, a jet scour formation and ascent of the resulting slurry of rock hydraulic ejector on the surface, characterized in that the opening of a productive layer of the mining inclined borehole and the casing is carried out by moving the outer pipe string downhole of the projectile along the well axis and simultaneous rotation of the inner pipe string, while jetting nozzle is injected inside the outer pipe string downhole of the projectile, while the erosion of the productive formation it is removed from the outer pipe string, the downhole shell.

2. Device for hydraulic borehole mining of minerals, made in the form of downhole projectile comprising concentric spaced columns of tubes, the outer of which is a casing of the well, and the interior equipped with a nozzle with hydraulic ejector, jet nozzle and the sealing element, and a cap in the form of a two-pass swivel for podstawowy and issuance of the pulp, characterized in that the sealing element is installed on the tip above the jet nozzle and is designed as a cylindrical protrusion for limiting movement of the inner pipe string relative to the outer bottom end of the outer pipe string is installed sleeve interoperable with a cylindrical projection, the external diameter of which exceeds the inner diameter of the sleeve.



 

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FIELD: mining industry.

SUBSTANCE: method includes opening productive bed by product slanting well, casing the well by pipes column, mounting well block with concentrically positioned pipes columns, lift and hydro-monitoring headpiece, hydro-monitoring erosion of bed and raising formed mixture of rocks by said lift to surface. According to method, opening of productive bed is performed using product slanting well and its casing is performed by displacing outer pipes column of well block along well axis and concurrent rotation of inner pipes column, hydro-monitoring headpiece is inserted inside outer column of pipes of well block, and during erosion of bed it is pulled out of outer pipes column of well block. Device for realization of said method is made in form of well block, including as common parts concentrically placed pipes column, outermost of which is casing column of well, and inner one is provided with headpiece with lift, hydro-monitoring headpiece and pressurizing element, and portal in form of two-passage swivel for feeding water and draining pulp. Pressurizing element is mounted at end piece above hydro-monitoring headpiece and is made in form of cylindrical shelf. To limit movement of inner pipes column relatively to outer pipes column, at lower end of outer pipes column a bushing is mounted with possible interaction with cylindrical shelf, outer diameter of which exceeds inner diameter of bushing.

EFFECT: higher efficiency, lower costs, lower laboriousness.

2 cl, 4 dwg

FIELD: mineral extraction method with the use of underground hydraulic ore cutting and extraction of crushed ore through boreholes.

SUBSTANCE: method involves cutting deposit over the deposit area into panels (sections or blocks); drilling boreholes for extracting pulp; arranging standpipe for pressure working medium supply and standpipe for conveyance medium supply; forming working excavation and filling thereof with stowing after development; performing lower deposit undercutting to provide ore massif permeability for working medium by serial shock blasting borehole and then camouflet explosive charges; forming camouflet cavities by blasting borehole charges and intermediate camouflets; performing successive impregnating of crushed massif with medium dissolving borehole minerals (for instance with acid or alkali solution); arranging containers with the dissolving medium above camouflet explosive charges before blasting thereof; separating them from explosive charges and from upper borehole part by stowing; supplying working medium through pressure working medium pipeline without creating overpressure in the medium; increasing pressure at outlet with hydraulic intensifier; regulating ratio between solid and liquid components of pulp risen by means of airlift plant by supplying compressed air through actuator arranged under pulp intake means.

EFFECT: increased fullness of mineral extraction.

3 cl, 6 dwg

FIELD: transport building, particularly to perform mining operations in far north areas.

SUBSTANCE: method involves cutting ground in pit and supplying sludge to concentration plant; separating the sludge into concentrated and lean sludge fractions in the concentrated plant; forming deposit vessel in water pool, filling the vessel with lean fraction, wherein the vessel is isolated from concentrated ground deposit by partition dam; developing concentrated ground with jet drag heads; forming and supplying strong pulp to washing in zone; washing in ground in layers, wherein upper layer consists of concentrated draining ground, or forming above ground structure by freezing the ground in layers in winter period. To implement above method water pool bottom is deepened to design level, one or several head parts of drag head are installed on deepened water pool bottom, the head parts are covered with concentrated ground and ground deposit is formed below ice boundary of water pool. Ground is extracted from above deposit from under ice through flexible sludge pipelines during extended working season.

EFFECT: reduced unit costs for strong sludge forming and elimination of costs necessary to maintain lane above underwater ground deposit during extended working season.

2 cl, 2 dwg

FIELD: mining industry, particularly borehole mining.

SUBSTANCE: installation comprises platform, hydraulic monitor plant with telescopic head, as well as airlift, rotary device installed on the platform, water recycling system, elastic oscillation generation system and distribution device connected to falling airlift members and to ultrasound disintegrator. Hydraulic monitor plant is provided with automatic hydraulic monitor operation control system installed on additional platform and connected with executive members of rotary device made in hydraulic monitor plant through hydraulic system. Elastic oscillation generation system may produce ultrasound oscillations of changeable power, which are transmitted by means of wash zone oscillators, pre-disintegration zone oscillator and oscillators of ultrasound disintegrator of the fist and the second level. Wash zone oscillators and sensors which record dynamic wash zone properties are installed on upper telescopic bar of T-shaped lever pivotally secured to additional rod of hydraulic monitor plant and brought into cooperation with drive through L-shaped link for lever rotation. Pre-disintegration zone oscillator and sensors which record dynamic properties of pre-disintegration zone are installed on telescopic rotary device hinged with airlift rod. Sensors which record dynamic wash zone properties and ones which record dynamic properties of pre-disintegration zone are linked with control system, which controls ultrasound denerator operational characteristics, and with automatic hydraulic monitor operation control system by digital programmed transforming device. Sensors, which determine dynamic properties of ultrasound disintegrator, are installed at the first level surface inlet and outlet of the ultrasound disintegrator. Above sensors are connected with control system, which controls operational characteristics of ultrasound denerator, through digital programmed device related with the next disintegration operation.

EFFECT: increased efficiency of mining operation and increased environmental safety.

5 dwg

FIELD: mining industry, particularly borehole mining.

SUBSTANCE: installation comprises platform, hydraulic monitor plant with telescopic head, as well as airlift, rotary device installed on the platform, water recycling system, elastic oscillation generation system and distribution device connected to falling airlift members and to ultrasound disintegrator. Hydraulic monitor plant is provided with automatic hydraulic monitor operation control system installed on additional platform and connected with rotary device of hydraulic monitor plant through hydraulic system, wherein vertical rod of hydraulic monitor plant is provided with rigid fixers brought into cooperation with slots of additional vertical rod. Elastic oscillation generation system may produce ultrasound oscillations of changeable power, which are transmitted through transformers to wash zone oscillators, pre-disintegration zone oscillator and oscillators of ultrasound disintegrator of the fist and the second level. Sensors which record dynamic wash zone properties and sensors which record dynamic properties of pre-disintegration zone are installed on the additional rod included in hydraulic monitor. Sensors which record dynamic wash zone properties and ones which record dynamic properties of pre-disintegration zone are linked with control system, which controls ultrasound denerator operational characteristics, and with automatic hydraulic monitor operation control system by digital programmed prior transforming device. Sensors, which determine dynamic properties of ultrasound disintegrator, are installed at the first level surface inlet and outlet of the ultrasound disintegrator. Above sensors are connected with control system, which controls operational characteristics of ultrasound denerator, through digital programmed device related with the next disintegration operation.

EFFECT: increased efficiency of mining operation and increased environmental safety.

5 dwg

FIELD: mining industry, particularly to produce loose, soft or single-grained minerals through production boreholes.

SUBSTANCE: method involves installing drilling rig in one point of area to be treated; drilling inclined production boreholes at an angle to horizon; installing pipes in the borehole; assembling hydraulic production equipment and lifting mineral to surface. Drilling rig is installed in one point to be treated so that the drilling rig may perform azimuth and angular rotation in vertical plane. Several production boreholes extending at different angles to horizon in common vertical plane are drilled by the drilling rig. The first borehole has minimal angle defined by maximal possible length of borehole, which can be drilled by the drilling rig. The next borehole has maximal angle defined by rock deformation area to prevent rock deformation on surface and in mineral production equipment installation area. Remainder boreholes are drilled in the same vertical plane at α3, α4, ... απ angles to horizon, which maximizes efficiency of mineral production. Similar inclined boreholes are drilled in other vertical planes by rotating the drilling rig in azimuth direction through γ1, γ2 ... γπ angles. Mineral is produced simultaneously or sequentially from borehole groups to provide smooth lowering of overlaying rock.

EFFECT: increased mineral removing fullness with the use of single equipment unit, reduced amount of construction-and-assembling operations, possibility to perform operations in any season, reduced costs of operation performing in cold season, increased safety for staff and equipment.

2 dwg, 2 ex

FIELD: mineral field development by hydraulic mining methods, as well as borehole drilling and all-purpose underground cavities creation.

SUBSTANCE: device comprises connection pipe for pressure water. Connection pipe of slurry pipeline has conical constricted section, wear-resistant insert made as spaced rings of wear-resistant material installed downstream from the conical constricted section in slurry flow direction, and conical widening section arranged downstream from the rings. Connection pipe of slurry pipeline has orifices made in area of ring location and adapted to supply pressure water into connection pipe of slurry pipeline via gaps defined between the rings. Hydraulic elevator is arranged at end of connection pipe for pressure water. Connection pipe for pressure water and hydraulic elevator may have water-jet nozzles. Gaps between rings of wear-resistant insert are created due to ring end roughness. As pressure water is supplied part of flow moving via annular gap passes through annular hydraulic elevator and enters into connection pipe of slurry pipeline to create ascending flow. Due to created vacuum washed mineral is sucked into connection pipe of slurry pipeline in slurry form and then transported to surface.

EFFECT: reduced wear of inlet connection pipe part.

3 cl, 1 dwg

Hydraulic monitor // 2272143

FIELD: methods of hydraulic mining, particularly hydraulic monitors for rock breakage with water jets.

SUBSTANCE: hydraulic monitor comprises base, hinge assembly and barrel with nozzle. Through pipe extending along barrel axis is installed in barrel channel and supported by centrators. The first pipe end is communicated with atmosphere, another one is located in the nozzle. Pipe-nozzle diameter ratio is 0.50-0.57. The pipe serves as ejection means. As high pressure water passes through the nozzle streamlined air bubble is created at pipe outlet due to air ejection. Air bubble pressure is less than atmospheric pressure. This provides jet compression at nozzle outlet and as a result increases jet range. Abrasive and chemical materials may be used with water jet to improve rock breakage efficiency.

EFFECT: increased efficiency.

1 dwg

FIELD: mining, particularly to develop gold-bearing rock with high clay content.

SUBSTANCE: method involves loosening rock by applying mechanical action to the rock along with periodically initiating elastic vibrations in ultrasonic-frequency band with constant frequency in clay-sand rock - water system, wherein the elastic vibrations are initiated under constant outer pressure and power for different time periods; determining optimal action application time to provide stable clay particle precipitation in clay-sand rock - water system having constant volume during previously choosing controllable particle dimension range; determining conditional transformation coefficients from mathematical expression; making plot of conditional transformation coefficient change as a function of time; determining increase of controllable initial specific surface of particles to be loosened and halving ultrasound power when controllable initial specific surface of particles to be loosened is increased by an order.

EFFECT: reduced specific power consumption.

6 dwg

FIELD: geotechnology, particularly bore mining in wide range of mining and geological conditions.

SUBSTANCE: method involves drilling bore extending for the full thickness of underground mineral formation; cutting the underground mineral formation in chamber coaxial to the bore with the use of water-jet devices. Before hydraulic formation cutting rock massif is moistened by supplying pressurized water in bore for a time period enough to expand moistened zone for necessary distance, wherein water pressure is less than pressure of hydraulic formation cutting. After formation moistening water-jet device is lowered in the bore to cut mineral in moistened zone adjoining the bore. After that formation moistening and cutting operations are repeated to create chamber having predetermined dimensions.

EFFECT: reduced power inputs for hydraulic rock cutting.

2 dwg

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