Development method of pillars of drilled gravel boreholes of permafrost zone
SUBSTANCE: method involves mining activities performed during summer season by water jet by means of devices installed in underground cavities pre-drilled from surface of the well along longitudinal axes of pillars at certain distance from each other with pulp lifting to the surface and its supply via pulp line to flushing device in order to extract useful component and laying of dehydrated flushing remainders formed during washout process of sands so that distributed filling masses are formed. Pillar recovery is performed in two stages during two years. During the first year the pillars are recovered partially so that gaps are left between cavities washed out between them, which are developed using the same method in the next year; at that, in order to strengthen compression properties of filling masses, they are frozen with natural cold during winter period.
EFFECT: avoiding execution of underground mine workings at pillar extraction; possibility of selective development of technogenic deposit; arrangement of dehydrated flushing remainders in the worked out space and its complete use; avoiding cavings in the ground surface; recovery of rock mass continuity and stabilisation of its temperature mode; minimum contamination of environment; eliminating the necessity for execution of recreation works.
The invention relates to mining development placers of the permafrost zone by underground methods, in particular pillars left in placer mines (CS) during the initial development of the field.
A known way to re-technogenic stocks contained in the columns, left during the initial underground mining of placer deposits of the North  (Prototype).
The main disadvantages of this method are:
- the necessity of drilling a large amount of revealing and tasks
- high severity conduct underground mining, since they have to operate within man-made disturbed area of the massif;
- high cost of maintenance (fixing) mining and treatment space;
- the lack of a closed-loop treatment of solid substances extracted from the lithosphere during underground mining of placer deposits and subsequent processing (washing) of gold-bearing Sands;
- broken and cannot be restored integrity (continuity) of the massif after removal of anthropogenic load (end of mining);
- dumps, remaining on the earth's surface at penetration revealing the workings, and after washing the underground sand in the summer, change the terrain and disfigure the landscape;p> - drilling and blasting technologies used in the mining operations pose significant dynamic loads on anthropogenic disturbed mountain range trigger displacement;
- it is possible failures of the earth surface when possible displacement of the falling of the goaf in the process of doing work;
seasonality of operations (in winter being underground mining operations, in the summer time, washing the extracted Sands);
- the need to import large quantities of explosive materials;
- the need to perform a large number of technological operations;
- low level of reuse of solid waste processing gold-bearing Sands;
- do not use the mined-out area formed in the process of conducting underground mining operations.
We propose a new method of mining the existing pillars of exhaust PM the permafrost zone of the jet, the implementation of which will contribute to the solution of a number of technical and environmental objectives: the elimination of conducting mining operations in underground mining of pillars; the ability of the electoral (cluster) of technogenic deposits, placement of dewatered tailings washing in the developed space CS and its full use, with the exception of the educational failures of the earth surface; restore C is the integrity of the rock mass and stabilize its temperature mode; minimal environmental pollution; except for the need to conduct recreational activities.
The required technical result of the invention is assumed to be obtained when taking into account the structure and lithological composition of sand placer deposits of the permafrost zone, the technological features of construction of underground tanks in the frozen dispersion rocks jet:
- producing formation of gold-bearing Sands of the Quaternary complex, dispersed, loose, legkorazmyvaemykh rocks;
- the presence of well-developed technology of construction of underground cavities in the frozen dispersion rocks by the way jet in permafrost conditions;
- quality disintegration dispersed species (Sands) pressure jets that provide high recovery of useful component in subsequent enrichment on the flushing device;
- the use of high-performance and well-established in the North mountain technologies and commercially available equipment.
In addition, the required technical result of the rapid freezing of filling arrays of the invention is assumed to be obtained also when taking into account the maximum utilization of climate, natural resources of the permafrost zone:
- the long winters is with extremely low temperatures;
- the presence of permafrost rocks with high durability in a frozen state;
- the presence of low-grade cold as atmospheric and accumulated rocks.
The proposed method differs in that the re-development of man-made sand contained in a tape pillars of the waste before the CS, is conducted in two stages over two years, in the following order: after finding the exact locations of the tape pillars, along the Central line placement, with the surface at a certain distance from each other proburivaya the vertical hole of the desired depth to the upper boundary of the productive formation); then in the summer Sands pillars wash pressure jets of water with the formation of dispersed cavities height equal to the thickness of the formation, between which gaps are left (the pillars tambohorano forms, supporting goaf); then make the rise of the pulp to the surface and feed it to the flushing device, which produces the extraction of useful component; then the tails wash down and placed in underground cavities to fill, including the trunks of the wells, with the formation rock backfill array, and process water is lightened and re-used for jet and is romawki Sands. In the winter of filling the array promarijuana natural cold with the formation of a solid Leopardi structures that support the developed space. In the following year (the second stage) in the same pattern are full processing of pillars, enrichment sand, mined-out space and Pomorska filling arrays.
Introduced in the formula of the invention, a significant feature, as a method of jet for testing tape pillars CS, avoids the penetration opening and development workings, to conduct mining operations without the use of drilling and blasting operations, to make selective (cluster) development of technogenic Sands with minimal undermining of waste rock, which gives a significant economic effect.
Another significant feature is that the solid material washing (tails) filled with washed out underground cavity with the formation of uniformly dispersed worked field CS backfilling of rock masses high compression characteristics; thereby eliminating the formation of dumps on the earth's surface and providing a high density of stacking, integrity (continuity) of the rock mass, the full use out space, providing closed-loop circulation of solid material the print materials of the lithosphere.
The next significant feature is that elevated filling arrays proparaguay natural (atmospheric) cold in the winter without the use of power plants, with the formation of durable artificial Leopardi structures that support the mined-out area, under the protection of which produce the final revision of the tape pillars, thus preventing the failure of the earth's surface, helping to restore the temperature field and the continuity of man-made disturbed the rocks.
Equally important is the fact that there is no seasonality of work - all the main work is done in the summer; and in winter, produce only Primorsko filling arrays does not require the presence of the people; in the process of erosion of the cavity Sands composing the whole, well disintegrate, which provides a high degree of extraction of valuable components in the enrichment process.
The inventive method is illustrated by drawings (figures 1 and 2). Figure 1 presents the waste plan CS, technological complex arrangement of all equipment, reflecting all stages of work on the development of tape pillars in the practical implementation of the proposed method, and figure 2 - cross section.
Conventions on the drawings:
1 feeds cnie pillars;
2 - stope waste CS;
3 is a vertical borehole;
4 - day surface CS;
5 - layer of peat;
6 is the upper bound of the product of the reservoir Sands;
7 - gidromassazhnye Assembly;
8 - water pump;
9 - the conduit;
10 - washed out underground cavity in the rear (under erosion);
11 - the lower bound of the productive formation Sands (raft placers);
12 - leave comboarray frozen bespolostnoe rock gap (pillar);
13 - hidroelektra-airlift-type installation for lifting Sands;
14 - slurry line for submission of the eroded sand on Prompribor;
15 - flushing device;
16 - slurry line to transport tailings from Prompribor for laying underground cavities;
17 - underground cavity (in final form);
18 - filling rock mass;
19 - freezing businesslicense air thermosyphons;
20 - artificial tape pillars.
Implementation of the proposed method in practice to simulate the tape of pillars 1, located within the exhaust of a mine field 2, using the technology of jet produced in two stages, beginning (1st stage) with the dispersed drilling vertical wells 3 with the surface 4 along the Central line of sight along the entire length at full capacity of peat 5 below the level of the upper border of roductive reservoir Sands 6. In the well into the summer set gidromassazhnye units 7, the water in which (upon reaching temperature 5÷7°C) served by the pump 8 through the conduit 9 and produce erosion of sand on the entire width and height of the pillar with the formation of underground cavities 10 up to the float, placer 11. Between eroded cavities leave gaps (box of frozen pillars 12) to maintain the goaf, which work for next year (2nd stage). Formed in the process jet Sands pulp raise hidroelektra-erlitou installation 13 to the surface and slurry line 14 serves to flush the device 15, which produces an enrichment of the Sands. Tails leaching after thickening the slurry line 16 serves formed in the cavity 17 to complete its completion, including the well bore, with the formation of the backfill array 18. Work done with the onset of the cold period and lowering the temperature below 5°C.
In the winter of filling the arrays in cavities proparaguay natural cold with businesslicense installations - air thermosyphons 19 with the formation of artificial dispersed turbobrush Leopardi pillars that support the mined-out area, under the protection of the summer season next year (2nd stage) for the same scheme finalize the tape pillars in full, will also perform all of the above work. Thus fulfill all available within waste mine field of natural pillars, and place them build a solid, artificial frozen tape pillars (20) from the tailings leaching, which in frozen form have high strength, are not inferior to natural, thereby ensuring the integrity of the earth's surface above the mine field.
The main advantages of the proposed method:
exception conducting underground mining - working driving and cleaning work using drilling and blasting technologies;
- minor violations of the natural environment;
- minimal anthropogenic impact and violation of the mountain massif;
- minimum consumption of materials;
- exclusion of seasonality of operations;
- high mechanization and automation of all technological processes: erosion Sands, issuing them to the surface, transportation, enrichment; transportation and stacking of tailings in underground cavities, Primorski filling arrays;
- simplicity of construction, Primorski and high load-carrying capacity built of frozen backfill arrays;
- no dumps on the ground;
- high mechanization and low cost of borehole drilling;
- full use of depleted underground space
- selective (cluster) development of sand pillars with minimal excavation waste rock;
- quality disintegration of sand in the process of the jet and, as a consequence, a high degree of extraction of useful component during enrichment on the Prompribor;
- ensuring closed-loop treatment of solid materials in technogenic Sands of pillars;
low material costs for the purchase of equipment and installation of all types of work;
- no need to perform recreational activities;
- low cost of extracted component;
- a small amount and ease of technological operations;
- low cost Primorsko artificial pillars through the use of natural cold and businesslicense units;
- ensuring closed-loop circulation of water.
The source of information
1. Kotwicki CENTURIES and other Underground re-development of self-propelled machines frozen placers // Kolyma, 1987. No. 7. - P.10-13.
Method development pillars worked placer mines of the permafrost zone, including the conduct of mining operations in the summer, the jet devices installed in pre-drilled from the surface of the bore along the longitudinal axis of pillars at a certain distance the AI from each other with the rise of the pulp to the surface and feed her in the slurry line to flush the device to extract the desired component and the placement of dewatered tailings leaching from the process of erosion of the Sands underground cavity with the formation of dispersed filling mass, characterized in that the mining of pillars are produced in two stages over two years, and in the first year of the pillars develop partially, leaving gaps between washed them in the cavities, which work the same way next year, thus to enhance the compressive properties of the filling mass in winter their proparaguay natural cold.
SUBSTANCE: method of hydraulic borehole mining of mineral resources at inclined position of beds involves construction of hydraulic mining and auxiliary wells. Hydraulic mining and auxiliary wells are located in lines along the strike of inclined beds and cross them. Bottoms of vertical hydraulic mining wells are drilled downstream, and bottoms of auxiliary wells having vertical and inclined parts of well, the vertical part is drilled to similar inclined beds and the inclined bed enters similar productive formations, both from upper beds and within productive formations, and is directed towards hydraulic mining wells. Distance between location lines of hydraulic mining wells and auxiliary wells is determined with stability of inter-layer beds-bridges of the worked out area of loose ore beds, and distance between hydraulic mining wells and between auxiliary wells is determined with technical drilling capability of inclined branches towards hydraulic mining wells providing disintegration of loose ores between location lines of hydraulic mining and auxiliary wells of all similar beds subject to development and crossed with hydraulic mining and auxiliary wells.
EFFECT: increasing the scope of mining operations, controlling the mining volume of ore mass as to depth of hydraulic mining well, reducing the scope of construction work of hydraulic mining wells and operating equipment on mining per unit of time.
2 dwg, 2 ex
SUBSTANCE: device includes pulp lifting pipe string with pulp removal head, which is installed inside casing string of the well, air supply pipe string with nozzle provided on its lower end, which is installed inside pulp lifting pipe string with possibility of vertical movement through the head, water supply pipe string installed inside air supply pipe string and having the outlet through side surface of suction tip. Steam supply pipe is installed in upper part of water supply pipe string; there is flange coupling on casing string and pulp lifting pipe string, which tightens those strings between each other; air supply device with two cocks and pressure gauge is installed on casing string below flange connection; inside pulp lifting pipe string there installed is additional water supply pipe string the lower end of which is located on the level of lower end of suction tip and level metre the upper end of which is passed through flange coupling and tightening device, and the jack connected to one of inner pipe strings is installed on the head cover.
EFFECT: improving development efficiency of underground reservoir in permafrost sedimentary rocks.
4 cl, 2 dwg
SUBSTANCE: development method of underground reservoir in permafrost sedimentary rocks involves drilling of sand permafrost formation with a well, installation of process columns in it, supply of water, compressed air, heat carrier via them, development of working-out-capacity by thermal destruction of frozen rocks and air-lifting of developed hydraulic fluid of sand to the surface with water supply for weighing of deposit to the air-lift suction zone and additional water to working-out-capacity with control of water-air boundary level position by regulating the flow of supplied water. Well head is tightened and excess pressure is increased in underground reservoir by supplying compressed air to the well; during thermal destruction of frozen rocks there used as heat carrier is steam which is supplied with constant flow together with additional water; additional water flow is changed to control the water-air boundary level position, and recirculated water forming during separation of sand from lifted hydraulic fluid is supplied to weigh the deposit.
EFFECT: improving development efficiency of underground reservoir in permafrost sedimentary rocks.
SUBSTANCE: method includes coal bed extraction in sub-levels with the use of hydraulic mining and pressure tight bulkheads. First, sublevel drifts are put to the boarder of mine section, then, as far as the coal is extracted in the sublevel entry way there installed is portable pressure tight bulkhead with pipe and duct for the output of coal slurry and concurrent methane exhaustion from near-well bore area. Note that after sublevel working out methane exhaustion is continued from the ducts installed in pressure tight bulkheads.
EFFECT: complex and rational use of coal in subsurface resources ensured by concurrent methane extraction, reduction of coal prime cost, safe mining.
SUBSTANCE: invention relates to mining, in particular mechanised face complexes for underground development of mineral deposited in sloping beds. Mechanised face complex for production of mineral deposited in sloping beds, its development in large blocks and delivery of these blocks by escalators, includes sections of powered support, hydraulic cutting cleaning machine with rolls, providing for its motion, to cut the mineral from bottomhole massif in large blocks with the possibility to cut transverse slots while hydraulic cutting machine is immovable, and to cut back vertical slot by means of continuous motion of hydraulic cutting machine with actuators and hydraulic cutting heads joined via metal tubes, on which they are rigidly fixed, with water supply manifold, outgoing from multipliers that impart ultrahigh pressure to water, hydraulic booster installed with the possibility of its continuous feeding with water and emulsion by means of continuously joined hoses of hydraulic cutting machine to water supply and emulsion manifolds, layer of manifolds for provision of possibility to re-arrange specified manifolds as hydraulic cutting machine moves and changes its direction of movement in process of idle run. Hydraulic cutting machine is arranged with the possibility to cut longitudinal slots parallel to plane of bed, simultaneously to cutting of back vertical slot with application of special hydraulic cutting untis, hydraulic booster is arranged with the possibility to feed water of ultrahigh pressure at actuators providing for cutting of back vertical and longitudinal slots as hydraulic cutting machine moves, and while hydraulic cutting machine is immovable - with the possibility to feed all water to actuators providing for transverse hydraulic cutting, besides lengths of all sections along length of long face of continuous cutting of transverse slots at one side and back vertical and longitudinal slots at the other side are identical. At the same time complex is equipped with suspended platform joined at goaf side of the second escalator to move long face of hydraulic cutting machine along it by means of electric drive connected to driving sprocket engages with track chain arranged in cute also laid in suspension platform, and body of track chain holds all communications providing for operation of hydraulic booster: emulsion discharge and drain manifolds, water manifold and electric cable.
EFFECT: increased efficiency of cleaning face, provision of high safety level, reduced release of gas and dust into atmosphere of long face.
4 cl, 10 dwg
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.
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.
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.