Hydraulic site for coal seam mining with underground closed-cycle water supply
SUBSTANCE: invention relates to mining and can be used for hydraulic process of coal production. Main and auxiliary openings are driven via tandem and/or single faces that delineate blocks, barrier and safety pillars. Water is forced into faces by pump stations after cleaning at drainage complexes, mechanised settlers and/or water headers. The latter are located in intercommunicated chambers located at lower points of hydraulic site blocks and exiting into accumulation openings via which hydraulic transport is performed and rock is discharged. Abandoned pillars are liquidated after working of extraction pillar at backstroke in tow-side or single-side cuts. Water is cleaned at mechanised settlers and/or water headers with application of combination of water cleaning technical means and processes. For this, used are, for example, water impermeable partitions with water bypass nearby bottom, thin-layer clarifiers, flotation, coagulation, water processing by constant pulsating current, etc.
EFFECT: working of coal at complex mining and geological conditions, lower costs.
4 cl, 2 dwg
The invention relates to mining and can be used for underground hydraulic technology of coal mining.
Known hydrosart , which includes the basic parts: underground excavation and installation; surface complex concentration and dehydration of the slurry; complex water clarification system closed water supply. The source of the water is mine drainage which, in time of starting the accumulation of water in sumps and tanks, and in the process of operation compensates for its loss.
When the excavation and transportation of rock mass used high-pressure, low pressure, and a mixed water supply hydrosart.
High-pressure water provides the water pressure from 8.0 to 16.0 MPa, allowing getrootpane coal.
Low-pressure water used for hydraulic transportation of rock mass, is smitten with mekhanogidravlicheskijj harvesters and for dust suppression. The mixed water is applied at joint hydraulic and mekhanogidravlicheskijj the rotating drum.
General technological scheme of work hydrosart with complex dredging of the main processes include: a process water treatment and preparatory faces to the hydro high-pressure pumps, which are installed on the surface; the issuance of hydros the art by gravity from the bottom of troughs in the sump by Plessey camera, whence it is transmitted through the slurry line to arc sieve; processing of large fractions of coal and sludge dewatering thunder and vertical centrifuge and issuing them in a railway hopper; diversion of water from the centrifuge in the surface sludge lagoons for final clarification, the allocation of fines coal, detachable sieve, shutteling craters, horizontal centrifuge and transported in a railway hopper.
Cleaning seizure of coal hydrosart is in short without fixing treatment space (hydro, mekhanogidravlicheskijj harvesters) and long faces (mechanized complexes with the hydraulic transport of coal).
Preliminary mining are coal, mixed bottom with presecco side of breeds or breed.
The main disadvantages of hydrochory are high energy intensity, the need for large capital expenditures, large losses of coal.
A well-known site (hydrocomplex) , as part of the mine or the area in which technological processes are carried out with the use of dredging.
The disadvantage is the lack of limitations in space mining operations.
Known water ratio underground mining with a closed loop water supply , which includes equipment supply and create high working pressure of the odes, established in the course of the technological scheme of downhole equipment getrootpane coal crusher, a screen, a hopper for larger size illuminator of recycled water for thickening pulp and water purification. It is equipped with a mill for fine grinding of coal particles in condensed coal slurry, additional hopper with feeder for feeding into the mill prizegiving plasticizer and mixing it with coal slurry. The illuminator is made in the form of a slurry separator located with the possibility of entering into it by gravity undersize product of the camera screens and further flow of coal slurry to the mill, and the clarified water in a two-stage sump, the primary compartment which contains the clarified water with a higher concentration of particles than in the secondary and have pleasem for directing the water in a preparatory face heading to the harvester, and the secondary compartment is supplied successively installed pumps to increase water pressure and direction in her longwall face to the giant. Rumble is in camera, built near the skip shaft, and a bunker for coal greater size made in the form of hopper Procida.
Lack of water ratio is the complexity and the presence of electrical equipment, which reduces the security level of the mine.p> There is a method of design of sloping and steep coal seams , which is to conduct basic and ventilation horizons accumulating and ventilation drifts, connected by a diagonal extraction workings, which contour extraction blocks of coal. Preparation of longwall mining and dredging coal are mekhanogidravlicheskijj, and for transportation of the smitten rock mass using gravity hydrotransport on soil excavations and trenches.
The disadvantage of this method is the lack of a closed-loop water supply.
The closest technical solution adopted for the prototype, is the way mekhanogidravlicheskijj coal mining , which involves the breaking of coal, its hydrotestosterone, enrichment, screening, dewatering and water consumers, and comprehensively combine optimized technological links. The blasting is carried out by selective destruction of the coal array Zachodni with a given size of the chip. Evacuation of extracted coal from Zachodni the flow of water combined with its simultaneous enrichment in the section due to the optimized angle, the size of the chip and a measured amount of water. Dehydration of coal carried out on the scraper conveyor with caltowie sieves, clear elastic elements attached the to Skrepka pipeline. Sort of coal is produced through crushing and sorting complex, made in the form of gravitational shearing crusher selective action and scraper-gap classifiers. Mechanical destruction of coal can produce swept the working body with a disc shearing cutters.
The disadvantage of this method is the lack of clean water for re-use in underground conditions.
The objective of the invention is to develop a gentle, sloping and steep coal seams with complex mining and geological conditions of their occurrence, having problems where traditional methods of coal mining have low rates.
The solution of this problem is achieved by the fact that opening and preparing production are dual and/or single faces that framing excavation blocks, barrier and security pillars, and the flow of water into the hole, carry out pumping stations after purification on drying complexes, mechanized ramps and/or drains which have in interconnected chambers located in the lower part of the excavation block site and having access to accumulating production, which carry out the transport and shipment of rock.
Dehydration of the rock mass and the clean water produced in two stages: at the PE the PTO separate the rock mass by particle size greater than 5 mm, and the second slurry particle size of 0.03 to 5 mm
Left pillars repay after the reserves excavation unit reverse swing bilateral or unilateral benches.
The clean water produced in mechanized ramps and/or drains using a combination of technical means and methods purification of process water, such as waterproof partitions with bypass water at the bottom of the lamella clarifiers type blinds and longitudinal", flotation, coagulation, electroaparatna water constant pulsating current and other
The invention is illustrated by drawings.
In Fig. 1 is a flow diagram of the site.
In Fig. 2 shows the General scheme of dehydration of the rock mass and water purification.
In the drawings taken with the following legend: Excavation unit 1 site, barrier and security pillars 2 contribute paired with Bonami 3 opening 4, 5 and preparing single 6 workings.
Water supply to the faces carry out pumping stations 7, 8 after purification on drying complexes 8, 9, which have interconnected by linkage 11, which is used to bypass water chambers located in the lower part of the excavation block site with the outlet opening in fluid formulation 4, which carry getatr is sport and shipment of the rock mass in the trolley 12 or conveyor belt.
Dehydration of the rock mass and the clean water produced in two stages: at the first separate the rock mass by particle size greater than 5 mm on drying complex 9, and the second slurry particle size of 0.03 to 5 mm dehydrate the system 10, while the pulp from the dewatering complex 9 flows by gravity along the diagonal linkage 11 in the head part dewatering complex 10.
The clean water produced at the second stage in drying complex 9 sludge, which is installed modules of treatment devices that implement the methods of purification of process water, such as waterproof partitions with bypass water at the bottom of the lamella clarifiers type blinds and longitudinal", flotation, coagulation, electroaparatna water constant pulsating current and other
Pumping stations 7 and 8 have the camera next to the complex dehydration of the second stage or shaft sump 13 and provide water preparation 14 and giant faces 15.
The implementation of hydro-sites with underground closed loop water allows to work locally on shallow seams reserves with difficult mining and geological conditions of occurrence of layers, and on the steep and steeply inclined seams almost all stocks, because at the present time, alternative options are more effective technology than hydraulic mining Uglas wide scope and small present cost, not exist.
Sources of information
1. Kuzmich I.A. Hydrosart // Mountain encyclopedia. So 2. - M.: Soviet encyclopedia, 1986. - 575 S. - P.65-66.
2. Thesaurus for hydrosart / Compilers B.A. Teodorovici, P.I. Yurin, S. p. Kostovetsky etc. - Novokuznetsk: Vniigidromash, 1977. - 56 S.
3. RF patent №2209966. The water ratio underground mining with the closed cycle of water. IPC IS 25/60. Will say.: LLC Scientific-production Association "Prokopievskugol. Authors: Dongli A.P., Sourdin S.A., Trojan, NP, etc. Appl. 25.08.1998. Publ. 10.08.2003.
4. RF patent №2133827. Method design of sloping and steep coal seams. IPC IS 45/00, Patentable. Atrashkevich A.A. Declares. Atrashkevich A.A., atrashkevich VA, atrashkevich O.A. and other Authors: atrashkevich A.A., atrashkevich VA, atrashkevich O.A., Pref A.G. and others Appl. 06.01.1998. Publ. 27.12.1999.
5. RF patent №2143559. The way mekhanogidravlicheskijj coal mining. IPC IS 45/00, patentable. Atrashkevich A.A. Declares. Atrashkevich A.A., atrashkevich VA, atrashkevich O.A. and other Authors: atrashkevich A.A., atrashkevich VA, atrashkevich O.A., Pref A.G. and others Appl. 06.01.1998. Publ. 27.12.1999.
1. The site for the development of coal seams underground closed loop water supply, including: opening, preparing, threaded, treatment and ventilation for the production, preparation and treatment of the face, providing excavation of rock mass is, and preparatory work hydraulic and/or mekhanogidravlicheskijj ways, gravity hydrotransport troughs and/or soil mining; pumping station to supply water to the preparation and treatment of the faces burndown piping with shutoff valve; dewatering systems, mechanized ramps and/or drains, characterized in that the opening and prepares production are paired and/or single faces that framing excavation blocks, barrier and security pillars, and the flow of water into the hole, carry out pumping stations after purification on drying complexes, mechanized ramps and/or drains which have in interconnected chambers located in the lower part of the excavation block site and having access to accumulating production, which carry out the transport and shipment of rock.
2. The site for the development of coal seams underground closed loop water supply according to claim 1, characterized in that the dehydration of the rock mass and the clean water produced in two stages: at the first separate the rock mass by particle size greater than 5 mm, and the second slurry particle size of 0.03 to 5 mm
3. The site for the development of coal seams underground closed loop water supply according to claim 1, characterized in that the OS is avlonya pillars repay after the reserves excavation unit reverse swing bilateral or unilateral benches.
4. The site for the development of coal seams underground closed loop water supply for items 1 and 2, characterized in that the cleaning water is produced in mechanized ramps and/or drains using a combination of technical means and methods purification of process water, such as waterproof partitions with bypass water at the bottom of the lamella clarifiers type blinds and longitudinal", flotation, coagulation, electroaparatna water constant pulsating current and other
SUBSTANCE: invention relates to mining and can be used for hydraulic borehole mining of minerals. Proposed method comprises opening of the deposit via central and peripheral wells, placing the equipment therein and opening of adjacent chambers in layers, from bottom to top, starting from peripheral chambers. Prior to opening of the next layer through the entire bed thickness, undercut chamber is formed nearby soil of formed chamber and, parallel with said layer, of artificial ceiling of hardening material with inclination to centre. Shrinkage of fallen rock and filling of opened space with hardening material, opening and backfilling of central chamber at development of every chamber. After making of said artificial ceiling, several hydraulic cuts are made over the height of temporary wells. After formation of undercut space, rocks are hydraulically fractured from lower hydraulic cuts to force fluid into fracture unless rock failure into undercut space. Caved rock is partially flooded by hydraulic fracture fluid and giants to wash out the rock. As rock disintegrates, pulp is fed to the surface. As magazine level drops below design mark, hydraulic fracturing is repeated from hydraulic cut closest to stripped area, shrinkage, wash-out and discharge of pulp. Then, said jobs are repeated unless stripped area reaches aforesaid artificial ceiling. Now, shrunk rock is completely washed put, pulp is discharged and stripped area is filled.
EFFECT: selective extraction, decreased losses of minerals and costs, lower environmental effects.
8 cl, 5 dwg
SUBSTANCE: proposed method comprises exposure of producing formation by production well equipped with jetting equipment and jetting of minerals. Nearby soil of developed strata horizontal drain hole is drilled for preliminary drying of working zone and creating conditions for operation of jetting in air. Note here that minerals are broken by jetting, gravity and increasing rock pressure resulted from underground water level decrease. This allows mining the minerals at strength of 3-5 MPa. Light grade well is drilled in vertical plane with drain well inclined to mouth to allow outflow of hydraulic mix by gravity and accumulated in settler. Operation of wells of hydromining complex is performed in turns. First, drain well is activated. After water level drop below giant jet nozzle, giant jet is activated. Minerals are mined by intervals in direction from bottom to mouth of operation well and with withdrawal of casing tubes.
EFFECT: higher efficiency of hydromining.
SUBSTANCE: device comprises a machine with a hydraulic drive of reciprocal and return-rotary displacement, a two-channel tubular frame, a jet working element, a system to supply and distribute discharge liquid. The working element is equipped with the main and auxiliary jet-forming shafts with attachments and separated channels of discharge liquid supply to them. The main shaft is installed at the angle of 90°, and auxiliary shafts - at the angles of accordingly 45° and 3-10° to the longitudinal axis of the working element. Supply of the discharge liquid to channels is adjusted to a two-position distributor installed on the shaft of the hydraulic drive of return-rotary displacement.
EFFECT: simplified design, increased reliability of design, increased safety and efficiency of labour.
4 cl, 3 dwg
SUBSTANCE: first preparatory field mines are driven - level haulage and ventilation drifts with identical geodetic elevations, block crossdrifts and accumulating drifts with an inclination for a self-flow transport, stripping wells are drilled at the right angle to the bed plane, then, line cuts are washed by the hydraulic method. Level haulage and ventilation drifts stretch at identical geodetic elevations to form a ventilation scheme with horizontal depression. The area of line cuts is increased to initiate the process of caving of a hanging massif in a stope. The stope bottom is formed by washing of line cuts with an inclination providing for accumulation of caved coal through self-flow. The caved coal is magazined to control shift of side rocks in the stope. Chambers that are adjacent to the mined space are separated by barrier sight pillars. Oversize material is crushed, and coal mass is periodically discharged in dosing manner into the accumulating drift to provide for stope bottom movement up the pitch.
EFFECT: elimination of air leaks through a mined space, reduced contamination of coal by caved rocks, higher reliability of breaking face functioning and labour safety.
SUBSTANCE: system capable of using naturally reheated fluids produced from hydrothermal channels with the purpose to develop and use practically unlimited quantity of thermal energy contained in specified fluids. The system comprises the main system made of three parts: a funnel, pipe sections and any combination of several mechanical fixtures. The extracted thermal energy is used to drive steam turbines or other equipment for generation of power, which is transported to earth surface, water desalination or for any other production, requiring thermal energy. Besides, the specified thermal energy may simultaneously or separately be introduced into the extracting plant for extraction of resources in order to extract precious metals, mineral and chemical substances without system modification.
EFFECT: provision of a reliable mechanism for extraction of thermal energy from an ocean bottom and such precious resources as minerals, metals and chemical substances.
37 cl, 5 dwg
SUBSTANCE: method includes exposure and development of reserves by open-cut method, exposure, preparation and working-out the reserves in cut edges by underground method, transportation of rock mass and maintaining protective pillars. When eliminating the front of open mining at safety distance there performed is an exposure of underground mining unit in cut edge that includes several beds. There passed are ventilation and pulp-haulage drift ways that are cut by pulp-haulage roadway, and from the surface there drilled are wells along coal beds till pulp-haulage roadway. Broken working is done from well upwards and downwards by hydraulic or drill-hydraulic methods, and pulp transportation is done by wells and pulp-transportation mines till draining complex.
EFFECT: invention allows increasing the coefficient of mineral resources extraction and reducing environmental losses.
6 cl, 2 dwg
SUBSTANCE: method consists in mining of the deposit with wells, creation of a cavity, and destruction and change-over of mineral product to hydraulic mixture. Mixture is mixed and hollow rock is deposited at the bottom of the formed cavity; coal-water suspension is pumped out to the surface and transported via pipes to the consumer. In order to destruct mineral product, high methane content of coal beds is used; at that, methane content in the formed cavity is controlled; and when the most explosion hazardous concentration of methane, which is equal to 10%, is achieved in that cavity, explosion is initiated. After mineral product is delivered to the consumer, the whole cycle of works is repeated. In order to prevent methane ignition, its concentration is reduced to explosion hazardous one by releasing methane via wells to the surface to consumers.
EFFECT: invention allows increasing the safety and efficiency of mine works owing to using internal energy of mine rock massif.
SUBSTANCE: method includes mining of a coal bed by chambers in an ascending order by a hydraulic method from surface and using underground mines, drilling machines, hydraulic monitors, and also a hydraulic elevator. At first a well is drilled from surface to the bed at the side of the roof, where pipes are placed for the hydraulic monitor, hydraulic elevator and methane suction, afterwards coal excavation starts in a split slot. Then another well is drilled in the produced slot along the coal bed, where pipes are installed for the hydraulic monitor and methane suction. Besides, in process of coal excavation in a chamber along bed rise with usage of underground mines the coal pulp arrives to an accumulating drift, which replaces the hydraulic elevator. At the same time methane is also sucked along the pipes to the surface.
EFFECT: wider area of method application, higher safety of minerals mining.
FIELD: machine building.
SUBSTANCE: method involves lifting of elements of underwater mineral deposits consisting of flow of transporting medium, transportation of hydraulic fluid in supply airlift pipeline, supply of compressed air to mixer of lifting pipeline, creation of multicomponent mixture after compressed air is supplied to hydraulic fluid mixture and transportation of multicomponent mixture flow in lifting airlift pipeline. At that, first, phantom cross section is chosen in the flow intended for transportation of elements of underwater mineral deposits, and for chosen phantom cross section there specified is the range of change of pressure value. Flows of water and air-and-water mixture are created in supply and lifting pipelines by supplying compressed air with the compressor to mixer of lifting pipeline Value of actual pressure is monitored in the chosen phantom cross section, as well as actual range of change of the monitored value is determined. Compliance of the certain actual range to the specified one is checked, and elements of underwater mineral deposits are supplied to water flow of supply airlift pipeline in case certain actual range belongs to the specified one.
EFFECT: increasing development efficiency of underwater mineral deposits at big marine depths due to shortening the total start-up time of airlift plant; avoiding the disturbance of transportation of solid material and gumming of pipelines during airlift start-up.
2 cl, 3 dwg
SUBSTANCE: method to extract materials from thick underground formations is carried out by means of formation opening with a well, placement of a well hydraulic monitor unit in it, creation of a naturally balanced vault above a production chamber within the productive horizon and washout of formation rocks with pulp delivery to the surface. In order to increase efficiency of well hydraulic production of minerals, excessive pressure is pulled in the production chamber, which meets the following condition: Pchamb.≥Pform.+0.03 MPa, where: Pchamb. - pressure of working fluid in the production chamber, Pform. - formation pressure. At the same time the pressure in the chamber is continuously monitored with sensor installed in lower and upper parts of a movable pipe of the hydraulic monitor unit, and the excessive pressure in the production chamber is provided by control of the working fluid supply into the well, with high-quality of hydraulic insulation of the annular space with mortars based on bentonite powders with specific viscosity from 50 sec. until "non-liquid" state.
EFFECT: higher efficiency of well hydraulic production of minerals.
2 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.