Hydraulic bore mining of minerals

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used at mining operations. Proposed method comprises drilling the row of test wells to fit downhole hydromining units therein and to washout minerals therefrom by fluid jets forced by said units for pulp to be delivered to surface. Drilled pipes are inclined in the plane perpendicular to spread of said row. Wells are drilled in a row to distance equal to double efficient length of washout jet while rows are spaced apart through distance equal to efficient length of washout jet. Washout is performed from wells towards hanging layer to form the face with hemispherical cross-section perpendicular to well axis.

EFFECT: reliable egress of minerals, washout at dried face.

3 cl, 9 dwg

 

The invention relates to the mining industry and can be used in the extraction of minerals, rocks presents weak, laborzentrifugen pieces of hard rock and breeds prone to disintegration. Such fields include, for example, alluvial and primary deposits of diamonds, precious metals and other minerals.

There is a method of hydraulic borehole mining of minerals, including drilling rows of holes, placing them in units of a hydraulic borehole mining, erosion mineral liquid jets of the latest and delivery of the resulting slurry to the surface (see Mountain encyclopedia, volume 4, str-550).

The disadvantage of this method is the complexity and unreliability of delivery repulsed mineral, especially a single, solid pieces and crystals on the surface. In addition, with this technology it is difficult to provide a drained face.

Known Assembly of a hydraulic borehole mining, including conduit and fixed therein, one or more, hydro (see Mountain encyclopedia, volume 4, str).

The specified unit is not able to fully implement the proposed method.

The task on which the present invention is directed, is to increase the efficiency of mining.

Technical the cue result improving the reliability of the issuance of minerals on the surface and the implementation of erosion when drained face.

This technical effect is achieved in that in the way of a hydraulic borehole mining of minerals, including drilling rows of production wells, placement borehole hydroponicly units, erosion mineral liquid jets of the latest and delivery of slurry to the surface, wells are drilled sloping, well in the range of Buryat at a distance equal to twice the effective length of stream erosion, and the rows have a distance equal to the effective length of the jet erosion of downhole jetting units, with erosion of the wells is carried out in the direction of the hanging side with the formation of the face in the form of a semicircle in cross-section perpendicular to the axis of the well.

In addition, erosion is performed in the uplink direction.

Delivery of slurry to the surface perform a screw rod.

For the implementation of the method uses a unit hydraulic borehole mining, including conduit and fixed therein, one or more, of hydro, which is equipped with a sectional screw rod, inside of which is placed the conduit and the walls of the screw rod in the plane of the axes of hydro, is made open.

To improve the reliability issue of the pulp on the surface, CE is the screw rod is equipped with wheels.

In addition, the auger blades or made arcuate shape in cross section or is located at an angle to the wall of the screw.

For the implementation of the drilling sectional screw becoming equipped with drilling crown.

This set includes all the essential features, each of which is indispensable, and all sufficient to achieve a technical result.

The invention is illustrated by drawings:

figure 1 shows the wells in adjacent rows in a section;

- figure 2 - arrangement of the rows of wells;

- figure 3 - unit hydraulic borehole mining, in the section perpendicular to the axis of the well, with one monitor attached to the conduit tail;

- figure 4 - Assembly of a hydraulic borehole mining in cross section along the axis of the bore, with one monitor attached to the conduit tail;

- figure 5 - unit hydraulic borehole mining in the section perpendicular to the axis of the well, with one monitor attached to the conduit estuarine part of the giant;

- figure 6 - unit hydraulic borehole mining in cross section along the axis of the bore, with one monitor attached to the conduit estuarine part of the giant;

- 7 - unit hydraulic borehole mining in the section perpendicular to the axis of the borehole, with two hydro;

on Fig - unit hydraulic borehole mining in cross section along the axis of the borehole, with TLDs what I hydro;

- figure 9 a, b, C, d - perform various blade sections of the screw rod.

The method is as follows.

In the array Buryats inclined wells 1, located in rows I, II, etc.

A series of wells located at a distance from each other and equal to the effective length of the jet erosion of downhole jetting assemblies, as well in the series are drilling at a distance b equal to twice the effective length of the jet of washing.

In well 1, starting from the first row, place the units hydraulic borehole mining 2 and perform erosion, stream of fluid 3, the productive formation 4. Washing is carried out in the direction of hanging wall side 5, with the formation of the face in the form of a semicircle 6. Washing can be carried out from a single well and multiple.

To ensure gravity delivery of the pulp obtained by the erosion, the latter are jet 3 fluid in an upward direction. The choice of the angle of inclination of the jet 3 it is possible to achieve the most effective and efficient transportation of pulp, as well as in combination with the depth of the sump 7 ensure the drained face.

The method is performed by a unit of a hydraulic borehole mining 2, comprising a conduit 8 with fixed therein by one or more hydro 9, and the sectional screw rod 10. In the walls 11 of the last sections, in a plane in which lie hydro 9, vypolneniia 12 for transmission of liquid jets 3, bleeding from the hydro 9. Screw becoming may be provided with a flange 13, which is located on the edge of the blades of the screw 14, for more reliable transportation pulp.

Figure 9 shows a different form of execution of the blades 14 of the sections of the screw rod 10:

a) the blade 14 sections of the screw rod 10 with the flange 13;

b) the blade 14 sections of the screw rod 10 arc shape in cross section, with the convex arc aimed at the lower side;

C) the blade 14 sections of the screw rod 10 having rounded at the end;

g) the blade 14 sections of the screw rod 10, directed at an angle to the wall of the screw.

To ensure the best move of the pulp, as well as to improve the safety of cristalleria, the blade 14 of the sections of the screw rod 10 may be coated with antifriction material (figb).

Also the blade 14 sections of the screw rod 10 can be performed with decreasing thickness of the wall of the screw to the edge of the blade (high).

The conduit 8 is made in the form of a tube with walls 15, which is opposite the window 12 is mounted hydro 9 and additional wall 16.

In some cases, especially in the development of low rocks of the fortress, screw being a 10 in the hole part can be equipped with drilling crown (not shown), for overlapping operations on drilling wells 1 and placing them in units of a hydraulic borehole mining 2. In the shown is the case of the issuance on the surface destroyed during the drilling of rocks is the same upon receiving pulp, sectional screw rod 10.

The device operates as follows.

In the case of previously drilled wells 1, they alternately or simultaneously in several of them, fall unit of a hydraulic borehole mining 2 units or hydraulic borehole mining 2 respectively. In the case of drilling crown operations for drilling wells 1 and placing them in units of a hydraulic borehole mining 2 combined.

From the ground block to the conduit 8 is supplied to the liquid which the conduit 8 is moved in hydro 9, coming from nozzles which forms a jet of the liquid 3. Due to the rotation and cyclic feed liquid hydro 9 produce faces in the form of semicircles 6.

You can use units hydraulic borehole mining 2 with multiple hydro 9, having individual fluid supply, which produce the faces of the specified form in the rotational motion and alternate supply of fluid in the hydro 9.

Blurred stream of fluid 3 rock by gravity into the sump 7, where due to the rotation of the screw rod 10, the pulp is thrown to the surface. In order to monitor the stream of liquid 3 could affect the rock, the screw rod 10 opposite the hydro 9, the window 12.

For maximum efficiency videobulma on the surface of the blade 14 sections of the screw rod 10 may have a different design (see Fig.9).

In some cases, the drilling of wells 1, it is advisable to combine with the development of the productive layer 4 or to carry out these operations serially, without removing the units hydraulic borehole mining 2 from the well. For this purpose, the aggregate supply of the drilling crown, which produces drilling during the rotation of the screw rod 10.

Using this technical solution will allow you to achieve more reliable issuance of minerals on the surface and to carry out work for the washout when drained face, which significantly increases the volume produced from each well of the chamber. In addition, during the development of the fields of cristalleria, increases the reliability issue to the surface and safety especially valuable, large crystals.

1. Way of a hydraulic borehole mining of minerals, including drilling rows of production wells, the sequential placement of the borehole hydroponicly units, erosion mineral liquid jets of the latest and delivery of slurry to the surface, characterized in that the wells are drilled inclined in the plane perpendicular to the strike of the series of wells in a row are drilling at a distance equal to twice the effective length of stream erosion, and the rows have a distance equal to the effective length of the jet erosion of downhole jetting units, the ri this erosion of the wells is carried out in the direction of the hanging side with the formation of the face in the form of a semicircle in cross section, perpendicular to the axis of the well.

2. The method according to claim 1, characterized in that the washing is carried out in an upward direction.

3. The method according to claim 1 or 2, characterized in that the delivery of slurry to the surface carried out by the screw.



 

Same patents:

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used for hydraulic process of coal production. Main and auxiliary openings are driven via tandem and/or single faces that delineate blocks, barrier and safety pillars. Water is forced into faces by pump stations after cleaning at drainage complexes, mechanised settlers and/or water headers. The latter are located in intercommunicated chambers located at lower points of hydraulic site blocks and exiting into accumulation openings via which hydraulic transport is performed and rock is discharged. Abandoned pillars are liquidated after working of extraction pillar at backstroke in tow-side or single-side cuts. Water is cleaned at mechanised settlers and/or water headers with application of combination of water cleaning technical means and processes. For this, used are, for example, water impermeable partitions with water bypass nearby bottom, thin-layer clarifiers, flotation, coagulation, water processing by constant pulsating current, etc.

EFFECT: working of coal at complex mining and geological conditions, lower costs.

4 cl, 2 dwg

FIELD: mining.

SUBSTANCE: invention relates to mining and can be used for hydraulic borehole mining of minerals. Proposed method comprises opening of the deposit via central and peripheral wells, placing the equipment therein and opening of adjacent chambers in layers, from bottom to top, starting from peripheral chambers. Prior to opening of the next layer through the entire bed thickness, undercut chamber is formed nearby soil of formed chamber and, parallel with said layer, of artificial ceiling of hardening material with inclination to centre. Shrinkage of fallen rock and filling of opened space with hardening material, opening and backfilling of central chamber at development of every chamber. After making of said artificial ceiling, several hydraulic cuts are made over the height of temporary wells. After formation of undercut space, rocks are hydraulically fractured from lower hydraulic cuts to force fluid into fracture unless rock failure into undercut space. Caved rock is partially flooded by hydraulic fracture fluid and giants to wash out the rock. As rock disintegrates, pulp is fed to the surface. As magazine level drops below design mark, hydraulic fracturing is repeated from hydraulic cut closest to stripped area, shrinkage, wash-out and discharge of pulp. Then, said jobs are repeated unless stripped area reaches aforesaid artificial ceiling. Now, shrunk rock is completely washed put, pulp is discharged and stripped area is filled.

EFFECT: selective extraction, decreased losses of minerals and costs, lower environmental effects.

8 cl, 5 dwg

FIELD: mining.

SUBSTANCE: proposed method comprises exposure of producing formation by production well equipped with jetting equipment and jetting of minerals. Nearby soil of developed strata horizontal drain hole is drilled for preliminary drying of working zone and creating conditions for operation of jetting in air. Note here that minerals are broken by jetting, gravity and increasing rock pressure resulted from underground water level decrease. This allows mining the minerals at strength of 3-5 MPa. Light grade well is drilled in vertical plane with drain well inclined to mouth to allow outflow of hydraulic mix by gravity and accumulated in settler. Operation of wells of hydromining complex is performed in turns. First, drain well is activated. After water level drop below giant jet nozzle, giant jet is activated. Minerals are mined by intervals in direction from bottom to mouth of operation well and with withdrawal of casing tubes.

EFFECT: higher efficiency of hydromining.

1 dwg

FIELD: mining.

SUBSTANCE: device comprises a machine with a hydraulic drive of reciprocal and return-rotary displacement, a two-channel tubular frame, a jet working element, a system to supply and distribute discharge liquid. The working element is equipped with the main and auxiliary jet-forming shafts with attachments and separated channels of discharge liquid supply to them. The main shaft is installed at the angle of 90, and auxiliary shafts - at the angles of accordingly 45 and 3-10 to the longitudinal axis of the working element. Supply of the discharge liquid to channels is adjusted to a two-position distributor installed on the shaft of the hydraulic drive of return-rotary displacement.

EFFECT: simplified design, increased reliability of design, increased safety and efficiency of labour.

4 cl, 3 dwg

FIELD: mining.

SUBSTANCE: first preparatory field mines are driven - level haulage and ventilation drifts with identical geodetic elevations, block crossdrifts and accumulating drifts with an inclination for a self-flow transport, stripping wells are drilled at the right angle to the bed plane, then, line cuts are washed by the hydraulic method. Level haulage and ventilation drifts stretch at identical geodetic elevations to form a ventilation scheme with horizontal depression. The area of line cuts is increased to initiate the process of caving of a hanging massif in a stope. The stope bottom is formed by washing of line cuts with an inclination providing for accumulation of caved coal through self-flow. The caved coal is magazined to control shift of side rocks in the stope. Chambers that are adjacent to the mined space are separated by barrier sight pillars. Oversize material is crushed, and coal mass is periodically discharged in dosing manner into the accumulating drift to provide for stope bottom movement up the pitch.

EFFECT: elimination of air leaks through a mined space, reduced contamination of coal by caved rocks, higher reliability of breaking face functioning and labour safety.

2 dwg

FIELD: mining.

SUBSTANCE: system capable of using naturally reheated fluids produced from hydrothermal channels with the purpose to develop and use practically unlimited quantity of thermal energy contained in specified fluids. The system comprises the main system made of three parts: a funnel, pipe sections and any combination of several mechanical fixtures. The extracted thermal energy is used to drive steam turbines or other equipment for generation of power, which is transported to earth surface, water desalination or for any other production, requiring thermal energy. Besides, the specified thermal energy may simultaneously or separately be introduced into the extracting plant for extraction of resources in order to extract precious metals, mineral and chemical substances without system modification.

EFFECT: provision of a reliable mechanism for extraction of thermal energy from an ocean bottom and such precious resources as minerals, metals and chemical substances.

37 cl, 5 dwg

FIELD: mining.

SUBSTANCE: method includes exposure and development of reserves by open-cut method, exposure, preparation and working-out the reserves in cut edges by underground method, transportation of rock mass and maintaining protective pillars. When eliminating the front of open mining at safety distance there performed is an exposure of underground mining unit in cut edge that includes several beds. There passed are ventilation and pulp-haulage drift ways that are cut by pulp-haulage roadway, and from the surface there drilled are wells along coal beds till pulp-haulage roadway. Broken working is done from well upwards and downwards by hydraulic or drill-hydraulic methods, and pulp transportation is done by wells and pulp-transportation mines till draining complex.

EFFECT: invention allows increasing the coefficient of mineral resources extraction and reducing environmental losses.

6 cl, 2 dwg

FIELD: mining.

SUBSTANCE: method consists in mining of the deposit with wells, creation of a cavity, and destruction and change-over of mineral product to hydraulic mixture. Mixture is mixed and hollow rock is deposited at the bottom of the formed cavity; coal-water suspension is pumped out to the surface and transported via pipes to the consumer. In order to destruct mineral product, high methane content of coal beds is used; at that, methane content in the formed cavity is controlled; and when the most explosion hazardous concentration of methane, which is equal to 10%, is achieved in that cavity, explosion is initiated. After mineral product is delivered to the consumer, the whole cycle of works is repeated. In order to prevent methane ignition, its concentration is reduced to explosion hazardous one by releasing methane via wells to the surface to consumers.

EFFECT: invention allows increasing the safety and efficiency of mine works owing to using internal energy of mine rock massif.

FIELD: mining.

SUBSTANCE: method includes mining of a coal bed by chambers in an ascending order by a hydraulic method from surface and using underground mines, drilling machines, hydraulic monitors, and also a hydraulic elevator. At first a well is drilled from surface to the bed at the side of the roof, where pipes are placed for the hydraulic monitor, hydraulic elevator and methane suction, afterwards coal excavation starts in a split slot. Then another well is drilled in the produced slot along the coal bed, where pipes are installed for the hydraulic monitor and methane suction. Besides, in process of coal excavation in a chamber along bed rise with usage of underground mines the coal pulp arrives to an accumulating drift, which replaces the hydraulic elevator. At the same time methane is also sucked along the pipes to the surface.

EFFECT: wider area of method application, higher safety of minerals mining.

4 dwg

FIELD: machine building.

SUBSTANCE: method involves lifting of elements of underwater mineral deposits consisting of flow of transporting medium, transportation of hydraulic fluid in supply airlift pipeline, supply of compressed air to mixer of lifting pipeline, creation of multicomponent mixture after compressed air is supplied to hydraulic fluid mixture and transportation of multicomponent mixture flow in lifting airlift pipeline. At that, first, phantom cross section is chosen in the flow intended for transportation of elements of underwater mineral deposits, and for chosen phantom cross section there specified is the range of change of pressure value. Flows of water and air-and-water mixture are created in supply and lifting pipelines by supplying compressed air with the compressor to mixer of lifting pipeline Value of actual pressure is monitored in the chosen phantom cross section, as well as actual range of change of the monitored value is determined. Compliance of the certain actual range to the specified one is checked, and elements of underwater mineral deposits are supplied to water flow of supply airlift pipeline in case certain actual range belongs to the specified one.

EFFECT: increasing development efficiency of underwater mineral deposits at big marine depths due to shortening the total start-up time of airlift plant; avoiding the disturbance of transportation of solid material and gumming of pipelines during airlift start-up.

2 cl, 3 dwg

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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