Device for hydraulic borin-and-reaming of minerals
FIELD: mining engineering.
SUBSTANCE: invention relates to field of hydraulic boring-and-reaming of minerals, particularly to structures of gears for hydraulic boring-and-reaming solid minerals. Device consists of connected to each other tubal line with introduction and low end wall. Low end wall contains side water jet nozzle, pulp-receiving windows and jet elevator device. Diffusion cell jet elevator device by means of outlet is hydraulically connected to space between casing column and tubal line, and in bottom-most portion of low end wall it is installed butt water jet nozzle, hydraulically connected to separating cavity. Length of low end wall is more than distance between casing shoe and subface of producing stratum. Top part of casing pipe is outfitted by exterior reference ring and air-feeding pipe, rigidly fixed to casing pipe, and in bottom part of casing pipe there are implemented openings for feeding of compressed air into stope. Between casing pipe and body of low end wall, higher openings for feeding of compressed air, it is installed ring gasket.
EFFECT: it provides effectiveness increase of HBR ensured by creation of physical environment of side water jet device in unsubmerged space of stope.
The invention relates to the field of hydraulic mining, namely, to designs of shells for hydraulic borehole mining (HBM) solid minerals, and can be used for extraction of solid materials from subterranean formations through wells.
By now developed a significant number of different designs of shells for the SRS solid minerals (see, for example, autospid. The USSR and patents of the Russian Federation№№374453, 602685, 662717, 739240, 762339, 819345,825966,899967, 964150, 1002585, 1065601, 1113549, 1265341, 1427071, 1449662, 1461947, 1489139, 1553686, 1608346, 1620631, 1682574, 1700249,2111359, 2113591, 2169839, 2272142, 71377 and other
Despite significant differences in the structures of the shells on the above autospid. and patents, all of them include the following main units: column vodopada pipes, jetting device, polipovidnami the hydraulic ejector and polipovidnye column. The variety of designs of shells can be explained by differences in the design of the above-mentioned main components, as well as the inclusion in the composition of the shells of new units and structural elements. These technical improvements aimed at speeding up the process of erosion of the formation of minerals, increasing the efficiency of the removal of slurry from the excavation chamber, increasing the depth of development of deposits of minerals, the formation of the extraction chamber with the required size is Rami and shape and so on, and so ultimately all this leads to an increase of technical and economic indicators of the SRS minerals.
At the same time, many designs of shells for the SRS have significant shortcomings, and that is the reason for their continuous improvement. This needs to take into account differences in geological conditions of occurrence of a layer mineral, and physico-mechanical properties of minerals and host rocks, which also significantly affects the design of shells for the SRS.
Known invention "Method of extraction of weakly bound species of minerals from underground formations and device for its implementation" autospid. No. 1682574 (IPC E 21 45/00, BI No. 37, 1991). The device according to autospid. No. 1682574 contains the casing, a string of pipe with the pulp-receiving holes and built at least one jetting nozzle. At the lower end of the tubing is rigidly fixed cylindrical protosport with receiving holes in its top. Over portobanco on the string of pipe is installed with the possibility of axial movement of the level regulator. Pokerrule element is installed at the upper end of portobanco. The packer is set at the lower end of the casing which seals the well. Through the packer carried out the duct.
From the local "Device for hydraulic borehole mining of minerals" under the patent for useful model №71377 (IPC ES 45/00 BI No. 7, 2008). This device was also taken as the prototype of the claimed invention. Device patent # 71377 consists of interconnected tubular rod with the input and the bottom tip. The lower end includes a lateral jetting nozzle, polypopylene open and hidroelektrane device consisting of hydraulically interconnected housings, underwater tubes, the separation cavity, hydroelevating nozzle, an inlet chamber, confuser, mixing chamber and diffuser. This diffuser hidroelectrica device through outlet pipe hydraulically connected with the space between the casing pipe and the rod, and in the bottom part of the lower end set end jetting nozzle, hydraulically connected with the separation cavity. The length of the bottom wall is larger than the distance between the casing Shoe and the sole of the productive formation.
The disadvantage of the prototype is a small performance improvement of productive strata by HBM.
The task is to improve the performance on the development of productive strata by HBM by creating working conditions lateral jetting device in unflooded face excavation chamber.
The problem is solved as follows. In accordance with a prototype device for SRS useful and is diggin consists of interconnected tubular rod with the input and the bottom tip. The lower end includes a lateral jetting nozzle, polypopylene open and hidroelektrane device. This diffuser hidroelectrica device through outlet pipe hydraulically connected with the space between the casing pipe and the rod, and in the bottom part of the lower end set end jetting nozzle, hydraulically connected with the separation cavity. Moreover, the length of the bottom wall is larger than the distance between the casing Shoe and the sole of the productive formation.
According to the invention the upper part of the casing is equipped with an external support ring and vozduhopodajushchej pipe, rigidly connected with the casing, and in the lower part of the casing made holes for the supply of compressed air in the excavation chamber. Thus between the casing and the casing bottom wall, above the openings for the compressed air, the o-ring.
Further, the invention is illustrated in the drawing, which shows the design and layout of the device.
The proposed device consists of a casing 1, output 2 and connected by a tubular rod 3 input 4 and the bottom wall. The upper part of the casing is equipped with an external support ring 5 and vozduhopodajushchej pipe 6, rigidly connected with the casing to the Onna, and in the lower part of the casing with holes 7 for compressed air in the excavation chamber 8. The lower end includes a lateral jetting nozzle 9, polypopylene window 10 and hidroelektrane device consisting of hydraulically interconnected housing 77, underwater tubes 12, the separator cavity 13, hydroelevating nozzle 14, an inlet chamber 15, confuser 16, the mixing chamber 77 and the diffuser 18, connected to a branch pipe 19. In the bottom part of the lower end set end jetting nozzle 20, hydraulically connected with the separation cavity 73. Thus between the casing 7 and the housing 77 of the bottom wall, above the holes 7 for compressed air, the o-ring 27. Moreover, the length of the bottom wall is larger than the distance between the Shoe of the casing 7 and the underside of the productive layer 22.
This device operates as follows.
Preparation for borehole hydropobic.
Drill hole 23 at a depth of 2-5 m, then drill a smaller diameter to the roof of the productive layer 22, in which the lower casing 7. In the upper part of the casing is mounted the outer ring 5 and the intake pipe 6. While the outer ring 5 overlaps the well bore 23 of smaller diameter, and the lower end of Vozduha the surrounding pipe 6 communicates with the annular space. Next, pump the cement slurry 24 in the space between the borehole wall 23 of larger diameter and the casing 7 so as to seal. Then the hole deepens to the bottom of the productive layer 22. After well prepared for hydropobic, in her place pipe becoming 3 and the lower end so that the side jetting nozzle 9 is located in the zone of the reservoir 22. Thus the bottom end surface is mounted so that the output of the outlet pipe 19, when working at full capacity of the productive layer 22 was located in the well below the casing shoes casing 7. Enter 4 tip via the pressure hose connected to pump unit, and the output 2 of the casing pipe supply discharge hose.
The process of hydraulic borehole mining.
The working fluid under pressure through the input 4 is supplied via pipe rod 3 lateral jetting nozzle 9 and simultaneously through an underwater tube 72 in the separation cavity 13 where it is divided into two streams - one of them is coming to the end jetting nozzle 20 and the other end to hydroelevating the nozzle 14. Through the side jet nozzle 9 is hydrodynamic destruction of rocks. Further, due to ejection, created by the jet of fluid, formed in hydroelevating the nozzle 14, ruin the health of the breed comes through polypopylene window 10 in the receiving chamber 75 and through the confuser 16, the mixing chamber 77, the diffuser 75 and outlet valve 19 to the column casing 7 to the surface. Thus vozduhopodajushchej pipe 6 serves compressed air through the well annulus 23 and the holes 7 enters the extraction chamber 8, creating an air cushion of high pressure. In the compressed air are created working conditions lateral jetting nozzles in unflooded space, which leads to an increase of the radius of the erosion of rocks of the productive formation. In addition, existing in the excavation chamber 8, the air under pressure, has a positive effect on the stability of the roof due to the additional backwater and reduces the inflow of formation water into the well.
Leaving the end jetting nozzles 20, a jet of water makes crushing large pieces of rocks formed during the destruction of the productive layer 22 side jetting nozzle 9, and raises with the bottom-hole zone of the well by means of the upward fluid flow is large and heavy particle species, dilutes the pulp. Due to this facilitated the flow of pulp in polypopylene window 10.
If necessary, increase the depth of testing the productive formation and facilitate the transportation of large and heavy fractions of rocks on the surface, you can apply airlifter is the W. In the annulus between the tubular rod 3 and the casing 7 descends vozduhopodajushchej column with a mixer (not shown).
Technical result: improved productivity in the development of productive strata by HBM by creating working conditions lateral jetting device in unflooded face excavation chamber.
Device for hydraulic borehole mining of minerals, consisting of interconnected tubular rod with the input and the bottom wall, the bottom wall includes a lateral jetting nozzle, polypopylene open and hidroelektrane device, and the diffuser hidroelectrica device through outlet pipe hydraulically connected with the space between the casing pipe and the rod, and in the bottom part of the lower end set end jetting nozzle, hydraulically connected with the separation cavity, in addition, the length of the bottom wall is larger than the distance between the casing Shoe and the sole of the reservoir, characterized in that the upper part of the casing is equipped with an external support ring and vozduhopodajushchej pipe, rigidly connected with the casing, and in the lower part of the casing made holes for the supply of compressed air in the excavation Cam is ru, thus between the casing and the casing bottom wall, above the openings for the compressed air, the o-ring.
SUBSTANCE: invention refers to underground development of mineral deposits, particularly to hydraulic excavation. The method consists in exposure of deposit by means of boreholes, in hydraulic fragmentation of rock with pressure water jet, in disintegrating and in converting fragmented mass into slurry in a working face, in transporting slurry from the working face to a pulp receiving borehole, and in lifting slurry to surface; also, prior to lifting slurry to surface it is intensively mixed; its heavy barren part (barren rock) is settled on the bottom of the washed-out cavity, thus backfilling mined space; further, light-weighted part of slurry consisting of mineral pulp is sucked off to an upper section of the cavity, wherefrom slurry (concentrated water-coal fuel) is lifted to surface and is transported directly to a consumer via pipes.
EFFECT: realisation of method in this way eliminates necessity to concentrate slurry on surface, to pile rejects and, consequently, decreases land subsidence owing to left in thickness barren rock, which serves as backfilling material of mined space in this case.
SUBSTANCE: invention refers to mining and is designed for development of thick deep seated deposits of loose self-breaking or preliminary broken minerals. The facility consists of internal movable pumping column 1 with hydro-monitor head 2 at the end, and of external pulp take-away pipe 3 with telescopic lower portion 4 with receiving opening 5. Telescopic lower part 4 of pulp take-away pipe 3 is movably connected with pumping column 1 and is designed to perform axial displacements. Pumping column 1 can have telescopic lower part 6 equipped with limiting-guiding rings 7 and 8. To limit a run column 1 and telescopic part 4 can be equipped with stop 9 secured to column 1 and with stops 10 and 11 on part 4. The telescopic part 4 of pulp take-away pipe can have density equal or slightly exceeding density of pulp due to property of material for pipe fabrication or due to closed interstice in structure (not shown). This facilitates its floatability in pulp. The facility can be made with variation of average density of lower part 4 of pulp-take away pipe.
EFFECT: simple and reliable facility ensuring efficient development of thick deep-seated deposits of loose self-breaking or preliminary broken minerals due to stable position of receiving opening of pulp take-away pipe in zone of optimal density of pulp.
4 cl, 1 dwg
SUBSTANCE: invention refers to mining and can be implemented at open development of mineral deposits by method of borehole hydraulic excavation. The installation consists of a high pressure column with channels for power water supply and for pulp lifting, of monitor nozzle, of a hydraulic lift, of a receiving chamber with openings and of a hollow head with a nozzle of the hydraulic lift. The installation is equipped with movable and fixed knives, with a spring loaded piston installed in the cavity of the head and designed to travel, and with guides located on sides of the openings; also the movable knives are installed in the guides, while the fixed knives are arranged in the openings. The movable knives are connected to the piston by means of rods. The invention facilitates reducing idle time and carrying out excavating process practically continuously to chamber completion.
EFFECT: reducing idle time and carrying out excavating process practically continuously to chamber completion.
4 cl, 3 dwg
SUBSTANCE: invention refers to procedures of mineral development of placers and sedimentary deposits with stable roof. The procedure consists in exposing the site of a producing reservoir with a main borehole embedding it into rock subjacent the said reservoir, in equipping the main borehole with a casing pipe, in assembling the bearing plate of the latter within boundaries of embedded part of the borehole, in forming in subjacent rock a receiving chamber with inclined outlet openings led to a floor of a producer, in leaving above them a preventive rock massif, in installation of a main hydro-monitor and a pulp-lifting device in the receiving chamber, in fluid wash of main reserve of mineral, in successive fluid wash of mineral placed above massif, and in lifting pulp via the main borehole from the receiving chamber to surface. Development is carried out chamber by chamber, for the purpose of which there are bored auxiliary boreholes around the main one with diametre less, than that of the main, wherein auxiliary hydro-monitors are installed; flush of reserves of a corresponding chamber is performed from each borehole; before flush of chamber reserves above massif there is carried out lifting of the main hydro-monitor and cased column; further the bearing plate of the latter is assembled and the main hydro-monitor is installed above massif within boundaries of thickness of the producer.
EFFECT: increased yield rate from one borehole, more rational development of deposits due to decreased loss of mineral and reduced extraction of barren rock to surface.
SUBSTANCE: invention refers to mining and can be implemented at borehole hydraulic excavating of minerals. The installation consists of a high pressure column, and of a central pulp lifting column installed inside the high pressure column, interior cavity of which is connected to internal cavity of the high pressure column via a nozzle of hydraulic lift; in a lower part of the high pressure column there is installed the nozzle of the hydraulic lift; an additional nozzle with a suction chamber is rigidly connected to the nozzle of the hydraulic lift. The nozzle of the hydraulic lift is connected to the high pressure column, is designed to rotate relative to its lengthwise axis and is equipped with a tailed jet; also tails of the jet are bent opposite to rotation direction; while the suction chamber is equipped with a pulp intake with openings assembled radial to the suction chamber and directed to the side of hydraulic monitor rotation. The invention facilitates increased efficiency due to intensification of pulp formation process and due to increased per cent contents of extracted material in pulp.
EFFECT: increased efficiency due to intensification of pulp formation process and due to increased per cent contents of extracted material in pulp.
SUBSTANCE: invention refers to open development of mineral placers, particularly to mining and concentration of gold containing placers in winter. The procedure consists in exposing works, in sand excavating and in sand transporting to a basin, in flushing and in dump piling. Also, in winter primary excavation and sand transporting are performed with preliminary piling sand on ice of the basin, while the secondary excavation and flushing are carried out in a warm season.
EFFECT: increased degree of disintegration of hard flushed clayish sand and reduced losses of valuable component.
2 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to development of mineral deposits, particularly clay placers, and can be implemented in mining industry. The method consists in striking developed placers, in their layer-specific excavation with parallel trenches leaving between-trenches massifs, in concentrating and in piling. Also between the first trench and the circuit of developed deposit an additional ditch is made, wherein water is supplied; when a successive trench is entered, each preceding trench is successively filled with water. When the last trench is driven, deposit is flooded; between trenches massifs are debugged by means of a drag or dredger; notably, debugging is performed from the first trench to the last one.
EFFECT: increased efficiency of clay placers development by means of increased degree of disintegration and extraction of valuable component at reduced technological losses.
2 cl, 2 dwg
SUBSTANCE: invention refers to development of deposits, particularly, gravel deposits, and can be implemented in mining industry. The method consists in stripping sand, in excavating and transporting sand to a hopper of a washing installation, in concentrating and in piling. Prior to transporting sand into the hopper of the washing installation, sand is piled in a trench laid in the center of the gravel deposit along the length of a production block at the depth below the level of the soil of the sand bed; the trench is filled with water. Also sands are piled in the trench below the water level, and their successive excavation is performed by the underwater method.
EFFECT: increased degree of disintegration of hard washed clayish sand and reduced process losses of valuable component with reduced cost for sand transporting.
SUBSTANCE: method of development of buried water-flooded placers includes preliminary concentration of useful component of sands in lower portion of placer by means of excitation of elastic oscillations in placer sands and successive stoped excavation. A tubular shell is inserted into the placer; the height of the shell exceeds the distance from the surface to the float of the spacer. Excitation of elastic oscillations in spacer sands is performed by means of their transmitting from the surface via the tubular shell. After compressive force has been formed from interior surface of the shell onto contacting surface of covering volume of barren material and after completion of vibratory processing the hydraulic stoped excavation of lower part of the placer is carried out; washing water is supplied via sprayers assembled at walls of the tubular shell and pulp is withdrawn via soil intake openings located at walls of the tubular shell between the sprayers. Also after completion of stoped excavation of lower part of the placer the stoped space is backfilled by supplied backfilling pulp and water withdrawal. Further backfilling pulp is formed from mixture of water with barren rock, for instance, with tailings of sand concentration. After backfilling of excavated space pressure onto surface of covering volume of waste material contacting with interior surface of the shell is dropped to zero and the shell is extracted.
EFFECT: increased selectivity of excavation.
SUBSTANCE: present invention pertains to excavation of mineral deposits, and particularly to gravel deposits, and can be used in the mining industry. The method involves pre-formation of a basin, formation of a dry zone on the productive stratum and basin in the stripped area, fitting interconnected, mining, transport and dump systems into the basin. Formation of the basin in the stripped area is done after piling up sand in it, with further extraction of the latter using a subsurface technique. The minimum distance from the basin to the heap of sand, as well as the depth of the basin, is determined from the maximum degree of weakening of the latter and technological parameters of the mining equipment.
EFFECT: increased efficiency of excavating high-clayey alluvial deposits.
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.
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.
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
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.
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.
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.