Procedure for development of placers
SUBSTANCE: invention refers to mineral resource industry, particularly to development of placers of minerals including alluvial placers of valuable minerals and noble metals including gold, silver, platinum etc. The procedure includes making vertical borehole and drilling boreholes into zone of gravel product deposits which are washed out with hydro-monitors. Produced pulp is directed to the vertical borehole. The vertical borehole is drilled facilitating entry into underground mine working constructed below the placers in a zone of stable rock. Directional upward boreholes are drilled into the zone of placers from the said mine workings. The vertical and directional upward boreholes are cased with a through filter pipe and filter strings; also hydro-monitors are installed in the filter strings of directional upward boreholes. Screw or helical hollow pipe is axially transferred and rotated for cleaning a filter part inside the through filter string of the vertical borehole and for control of pulp flow from the placer. Flush fluid coming via pointed perforation in screw or helical hollow pipe is supplied along whole length of the filter part of the through filter string.
EFFECT: maximal complete development of placer and continuous extraction of mineral.
The invention relates to the mining industry, in particular to the development of alluvial deposits of minerals, including the development of alluvial placer deposits of valuable minerals and precious metals, including gold, silver, platinum and other
There is a method of hydraulic borehole mining of minerals from placer deposits (A.S. No. 989072, publ. 15.01.1983), including the opening of the productive formation production wells drilled up to his feet, the translation of minerals in quicksand condition by injection of liquid reagent, the issuance of the resulting slurry to the surface and filling the exhaust chambers of overlapping rocks, which additionally are drilling injection and these pumping wells.
The disadvantage of this method is the incomplete development of placer deposits of minerals, i.e. not all of the placer Deposit is transferred to the slurry, which further large losses is given to the surface.
There is also known a method of disclosure of mineral deposits, practicing their geotechnological methods, including the construction of the shaft in the coastal zone of the productive placer deposits, sinking horizontal underground mine workings below the bottom of the float productive placer deposits in the area is relatively resistant rocks of the construction of the inclined rising production wells jumptv, installation pulpotomy pumps and slurry pipelines in the workings and in the trunk, pump the ore pulp to the surface (Whirrling "Drilling special purpose, Tomsk, Ed. TPU, 2006, str-149, 4.3, table 4.2.). In addition, it is known that under favorable hydrogeological conditions in the drainage systems can be used disposal wells or through filters, which is a vertical wells, equipped with end-to-end filter columns, the faces of the wells included in the underground mine workings. Drain the water through the filters come in mine workings, and on him in a special drains (Reference drainage rocks. Under the arms. Iscancel, M. Nedra, 1984, p.67, 106, 209, 495, RISD, V, tabl. rasd). Favorable hydrogeological conditions: stable levels of water content, low levels of pressure and others allow the use of vertical wells through the filter columns in the development of irrigated alluvial deposits.
The closest in technical essence is "the Way of extraction of useful components from underwater formations through wells" (RU # 2026490, publ. 09.01.1995 g), including the sinking of vertical wells, drilling wells in the area productive placer deposits, of which hydro produce erosion Rossin the x productive deposits and send the resulting pulp in the direction of the vertical hole, from which the hydraulic ejector produce the issuance of the pulp to the surface.
The disadvantage of these methods is incomplete practicing productive placer deposits, as extracted not the entire array of productive deposits, and, in addition, in the process of testing is Calmette filter part through the filter, which reduces the issue or to a complete stop mined through the hole.
The task of the invention is to provide a method of placer developments, allowing fully develop productive placer deposits and continuously produce fossil.
The problem is solved using the proposed method, including the sinking of vertical wells, drilling wells in the area productive placer deposits, of which hydro produce erosion productive placer deposits and send the resulting pulp in the direction vertical wells, in addition, vertical wells are drilling with the possibility of the entrance to the underground mine workings, built below the productive placer deposits in the area of sustainable rocks, and in the area of productive placer deposits drilling of wells of the above workings and perform them obliquely rising, with vertical and n is stronger rising well equipped through the filter and filter columns, moreover, in the filter columns inclined rising wells installed hydro, clean the filter parts inside through the filter column vertical wells and the regulation of the passage through it of the pulp productive placer deposits produced by the axial movement and rotation of the screw or helical hollow columns, while the entire length of the filter part of the filter through the column serves washing fluid flowing through the dot perforations in the auger or screw-shaped hollow column.
Distinctive features of the method is that:
vertical wells are drilling with the possibility of the entrance to the underground mine workings, built below the productive placer deposits in the area of sustainable rocks, and in the area of productive placer deposits drilling of wells of the above workings and perform them obliquely rising, with vertical and inclined rising well equipped through the filter and filter columns, which allows the most complete work in this field;
- cleaning filter parts inside through the filter column vertical wells and the regulation of the passage through it of the pulp productive placer deposits produced by the axial movement and rotation of the screw or helical hollow to the pubic, what prevents the clogging of the filter part;
- the entire length of the filter part of the filter through the column serves washing fluid flowing through the dot perforations in the auger or screw-shaped hollow column that prevents the sticking of placer material.
The combination of all these features allows you to maximally develop productive alluvial deposition and continuously produce fossil.
The method is represented by a drawing, which shows
the scheme of development of placer deposits.
Method development of placer mining involves drilling vertical wells 1 installing it through the filter of the column 2 with the filter part 3 with wide aisled holes. End-to-end filter column 2 is in underground mining 4, built below the productive placer deposits 5 in the area of sustainable rocks 6. From underground mines produce 4 drilling obliquely rising wells 7 in the area productive placer deposits 5. The number of inclined rising wells 7, their location near vertical wells 1, and the angles are determined by the specific geological and hydrogeological features of this particular field, i.e. the choice may be determined by the density of scattering, it is obvodnennost, the depth of the deposits and zones of resistant rocks, etc. Obliquely rising well 7 will be equipped with filter columns 8. Inside through the filter column 2 in the filter part 3 place a screw or screw-shaped hollow casing 9, having a point of perforation 10. The column 9 is supplied washing liquid, through which point the perforation 10 hits on the filter part 3.
During operation of the vertical well 1 wide aisled holes filter part 3 through the filter columns 2 collaterals, i.e. overgrown or get stuck solid particle species. In addition, in the process of passing through the wide aisled holes pulp inside filter part 3 may be formed of cork or is sticking placer material. To avoid this screw or helical hollow column 9 is moved in the axial direction and rotate with the simultaneous flow of washing fluid through the dot perforations 10. A hollow column 9 can post and make it move and rotate inside through the filter column 2 as above (shown in figure 1)and the bottom of the column 2. During the development of the placer Deposit to activate mined in an inclined rising well 7 inside the filter column 8 establish hydro 11 or the one device. By jetting 11 produce erosion productive placer deposits 5 and send the resulting pulp in the direction of the vertical well 1 (figure 1 this is shown by the arrows).
From vertical wells 1 through the filter columns 2 and an inclined rising wells 7 with filter columns 8 facing the pulp placer Deposit is collected in sumpah 12 and polyporaceae 13 to the pipeline 14 is thrown to the surface.
The proposed method can be used when developing the deep alluvial deposits, as well as in the development of oil fields under water, in coastal regions, in complex hydrogeological, cryogenic and climatic conditions and allows to develop productive alluvial deposition, thereby to increase the production of minerals.
The method of placer developments, including the sinking of vertical wells, drilling wells in the area productive placer deposits, of which hydro produce erosion productive placer deposits and send the resulting slurry in a vertical borehole, characterized in that the vertical wells are drilling with the possibility of the entrance to the underground mine workings, built below the productive placer deposits in the area of sustainable rocks, and in the area Ross is Phnom productive deposits drilling of wells of the above workings and perform them obliquely rising, the vertical and inclined rising well equipped through the filter and filter columns, and filter columns inclined rising wells installed hydro, clean the filter parts inside through the filter column vertical wells and the regulation of the passage through it of the pulp productive placer deposits produced by the axial movement and rotation of the screw or helical hollow columns, while the entire length of the filter part of the filter through the column serves washing fluid flowing through the dot perforations in the auger or screw-shaped hollow column.
SUBSTANCE: high-pressure bit nozzle is made in the form of confuser with straight-line channel section. Nozzle diametre do is chosen depending on density of flushing fluid, supply of drilling pump, nozzle resistance coefficient, nozzle opening degree, flow coefficient of supply channels, flow coefficient of nozzle, number of nozzles in the bit, the pressure created with the drilling bit, and length of straight-line nozzle section is determined by the formula ℓ=Kd0, where ℓ - length of straight-line channel section; K - trial coefficient (K=0.51÷0.53). Wear resistance of the material of the working nozzle part is higher than wear resistance of the material of its rest part.
EFFECT: increasing the drilling efficiency and reducing the cost of the drilling process.
SUBSTANCE: solid mass is subject to alluvial re-deposition with water flow. For that purpose, above the level of minefield section there created is water reserve, and in the minefield section there opened is some part of reserves with pioneer ditch. Drain ditch is passed from minefield section so that vortex and laminar flow zones are created in it. Water is drained from storage pond. Water flow breaks solid mass starting from pioneer ditch area, weighs the solid mass material and moves in the flow via drain ditch to the zone with laminar current conditions. In that area the productive particles are deposited, and thin clay material in the form of pulp flows to sludge pit.
EFFECT: reducing labour input and losses of useful components.
8 cl, 1 dwg
SUBSTANCE: invention can be implemented at borehole hydro-mining of any minerals at development at big depth or under complicated mining-geological conditions by means of directionally drilled (vertical-horizontal) boreholes wherein there are created zones of extracted rock crumbling; rock is flushed with hydromining aggregate and is supplied to surface in form of hydraulic mixture or pulp. The object of the disclosed here invention is to develop a hands-free method of borehole mining of minerals facilitating unchecked advance of a borehole hydro-mining aggregate at development of rock of any solid minerals. A horizontal part of borehole is drilled above sub-face of productive formation at half-diametre (in centre) of estimated production chambers on the assumption of preliminary calculations and considering ultimate strength of developed rock; this part is loaded with sectional arranged estimated elongated charges of explosive substances - (ES) divided with inert material and enclosed into a destructible shell; further these charges are successively initiated with a delay in each section, thus producing separate crushed sections divided with pillars of productive rock and containing zones of not broken rock required for unchecked advance of borehole hydro-mining aggregate along axes of productive chambers by means of flushing crushed rock and drawing it in form of hydraulic mixture or pulp to surface.
EFFECT: improved conditions for advance of hydro-mining aggregate facilitating increased efficiency and output of minerals hydro-mining.
SUBSTANCE: invention is related to mining industry, in particular to development of drowned gravel mineral deposits, also to development of alluvial deposit of noble metals and precious minerals. Method includes erection of shaft in bottom zone of productive deposits, driving of horizontal underground mines and sumps below bedrock of bottom productive deposits, in zone of stable rocks. Mines are used to arrange slanted-upward production wells, pumping of ore-bearing pulp from sumps to surface is carried out by pump-draining pumps along pulp lines. In the middle and along channel of productive deposits, on surface there are down holes erected with filter columns with full-hole openings and their exit to horizontal underground mines. On two sides of bottom zone along bottom line of productive deposits, over bedrock, slanted-horizontal wells are arranged, from which productive deposits are activated by hydraulic monitors, being transferred into pulp, which is supplied into sumps via full holes of filter columns of down holes and via slanted-upward wells. Arrangement of slanted-horizontal wells is carried out with their direction to filter columns of down wells.
EFFECT: method makes it possible to develop productive deposit to the maximum.
SUBSTANCE: invention is related to treatment of item surfaces with water jet. Water jet nozzle comprises body with the first nozzle head arranged on its front end, besides axis of outlet hole in the first nozzle head in plane of front end of body has an angle of inclination to axis of body rotation and is displaced relative to axis of rotation, and the second nozzle head, arranged on body side surface, besides axis of outlet hole of the second nozzle head is inclined to axis of body rotation to the side of its front end. Body comprises device for flow interruption, which comprises disk made in the form of sleeve, bottom and side walls of which have slots in the form of sectors and small turbine that represents impeller made of hub and blade crown, for instance with four blades arranged at an angle to nozzle axis. Disk and small turbine are fixed on axis, which it in turn is installed in sliding bearings, one of which is fixed in nozzle body from the side of front end, the other one - in central part of support, having shape of ring with ribs of rigidity, with external radius equal to radius of bore, where it is installed. Support is fixed with threaded ring.
EFFECT: improved efficiency of water jet nozzle due to dynamic action of pulsating water jets at material.
SUBSTANCE: invention relates to mining and can be used at development of stratum of coal by means of water-jet boring-and-reaming with following delivering of methane to consumer. Development method of stratum of coal by water-jet boring-and-reaming includes treatment of stratum with usage of predrilled well, hydraulic monitor with jet and jet elevator. Into predrilled well it is installed parallel portion of hermetic chamber, then into it is inserted pipes for water feeding to jet elevator, hydraulic monitor, and delivery of coal slurry to surface, after what on parallel portion of hermetic chamber it is fixed hermetic chamber with branch, through which it is exhausted methane by consumer at treatment of stratum of coal.
EFFECT: it provides implementation of unattended mining of minerals, and also - simultaneous delivery from one well of minerals and methane.
SUBSTANCE: invention refers to mining industry, and namely to development method of steep coal bed. Method involves development of coal bed by using pre-bored wells and a hydraulic monitor with a head piece. First, cross drift is made from the slope in the direction of the superface or soil of the bed, then in the cross drift there installed is a boring machine for boring inclined wells of large and small diametre at one and the same level through certain length; after that in the well of small diametre there installed is bore-hole hydraulic monitor with the head piece rotating at 180°, and coal breakage is begun at the sub-level; at that, the well of large diametre, which is broken as the sub-level development proceeds, is used for transporting the broken mined rock to the slope.
EFFECT: complex and rational use of subsurface resources, manless mining operations, reducing costs for the bed preparation and increasing labour efficiency.
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.
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
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.