Hydraulic borehole mining of hard minerals
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
The invention relates to mining and can be used in the development of mineral deposits by the method of hydraulic borehole mining. The application of this technical solution suitable for field development, presents bodies of ore formation, lenticular and other forms, including deposits, in which the reservoir is allocated on the content of useful component. Such fields include, for example, diamond-bearing kimberlite pipes of the Arkhangelsk region.
There is a method of hydraulic borehole mining of solid minerals, including opening deposits of the Central and peripheral technology wells, installation of equipment and testing at several stages layers from the bottom up nonadjacent cells, starting from the periphery, with education before working the next layer contour slit on the entire layer thickness, slash space jet in the soil formed by the camera and parallel artificial patrocina of the hardening material, with a slope from the periphery to the center, magazynowania collapsed rock mass and the mined-out space hardening material, testing, and bookmark the remaining peripheral cameras and, last but not least, testing, and backfilling of the Central chamber (see RF patent №21251601, CL IS 45/00, 1988).
This method allows selective excavation of minerals, presents separate sockets, lenses, layers, etc. In particular kimberlite pipes in which the distribution of diamonds is extremely uneven.
However, this method has some weaknesses. When the hardness of the host rocks is high enough, the jet array will require considerable energy and fluid consumption, and might prove ineffective. In this case, it is not excluded a significant loss of cristalleria. This is due to the fact that some crystals can remain intact "oversized".
A device for hydraulic borehole mining of solid minerals, including movable relative to each other, the external and the internal pressure of the column of pipes, Central polipovidnye the string of pipe installed in the cavity of the inner pressure of the column pipe and the auxiliary pipe with giant (see A.S. No. 1700249, CL IS 45/00, 1989).
This device most closely to the stated purpose, but it cannot perform the fracturing of rock mass, i.e. cannot implement the proposed method.
The problem to which the present invention is directed, the efficiency of mining of mineral deposits.
The technical result of the invention is the provision of the selectivity of the extraction, the decrease in the er mineral, reducing the cost of production and transportation, and reduce the harmful impact on the environment.
The technical result is achieved in that in the way of a hydraulic borehole mining of solid minerals, including opening deposits of the Central and peripheral technology wells, installation of equipment and testing at several stages layers from the bottom up nonadjacent cells, starting from the periphery, with education before working the next layer contour slit on the entire layer thickness, slash-and-burn area soil formed by the camera and parallel artificial patrocina of the hardening material, with a slope from the periphery to the center, magazynowania collapsed rock mass and the mined-out space hardening material, testing, and backfilling of the Central chamber, when testing each camera, after create artificial PetroChina, the height of technological wells create multiple hydroprobe, after the formation of the shifting space of the lower hydroprobe produce fracturing of rocks and pump in the resulting fracture fluid up to the collapse of the rock mass in the shifting space, collapsed rock mass partially zavodney due to fracturing fluids to and from hydro, which produce erosion of the rock mass, as the disintegration of the latter produced the lead issue of the pulp on the surface, when downgrading store below the design elevation, repeat surgery for fracture of hydroprobe closest to the worked-out space, magazynowania, erosion and delivery of the pulp, then the operation is repeated until reaching a goaf artificial PetroChina, after which produce a complete washout tamakaimoana rock mass, the issuance of the pulp and the mined-out space.
In the process of drilling allocate sites containing useful component and work only camera lying in these areas.
In some cases, after fracturing, the array is subject to collapse serves fluid under pressure required to saturate it rock mass, after which produce collapse, increasing the fluid pressure.
In addition, erosion lead from two hydro, one of which is a soil chamber, and the other above the level of Zapadnaya tamakaimoana mountain mass of the liquid.
It is advisable the linkage and slash space to form the fracturing and further giant washout from nearby production wells.
To improve the stability of the walls of the working section of the liquid in the store do not support above the level of the bottom contour of the wells.
To improve the disintegration of the rock mass in the liquid add surface-active ve is esta.
When large areas to be mined area between the peripheral and Central processing wells are drilling intermediate technological hole, development and testing of cells from these wells are similar to the working chambers of the peripheral wells.
To achieve a technical result, the device for hydraulic borehole mining of solid minerals, including movable relative to each other of the external and the internal pressure of the column of pipes, Central polipovidnye the string of pipe installed in the cavity of the inner pressure of the column pipe and the auxiliary pipe with giant, is provided with an additional monitor mounted on the inner discharge column pipe, and a nozzle fracturing, is placed on the outer discharge column pipe, while the auxiliary pipe is installed with the possibility of a fixed displacement relative to the internal pressure of the column of pipes and nozzle fracturing in the initial position overlaps the additional monitor and is made in the form of a housing with a cavity and Windows, around which has a hydraulic chamber, the outer walls are elastic, the body cavity communicated with the cavity of the hydraulic chambers, channels, and hydraulic cameras installed spring-loaded pistons, rods to the verge associated with hinged flaps.
This set includes all the essential features that are necessary and sufficient to achieve a technical result.
The invention is illustrated by drawings, where:
1 shows a General view of the working area in the incision;
figure 2 - testing the camera from the periphery of the well.
figure 3 - device for hydraulic borehole mining of solid minerals;
figure 4 - nozzle fracturing in the start position.
The mining is carried out as follows. Make the opening area 1 Central 2, 3 and peripheral, for wide working area, intermediate 4 technological wells. The contour plot of the Buryat contour contiguous wells 5.
Typically, these wells are drilled reduced, compared with the technological diameter.
Produce the lower layer to improvement. For this purpose, the height of the layer to create the contour slit 6 by any known method, the receiving chamber 7 in the Central 2 wells, inclined artificial ceilings of the hardening material 8 and, parallel to it, slash space 9.
Receiving chamber create a giant 10 device for hydraulic borehole mining of solid minerals 11, which is loose on the string of pipe 12 of the Central hole 2. Then on the column pipe 13 in the peripheral wells is 3 also omit the device for hydraulic borehole mining of solid minerals 14.
Through collaboration devices for hydraulic borehole mining 11 and 14 produce the formation of sboc slit to create artificial PetroChina 8 and slash space 9.
Testing begins with peripheral chambers.
After creating artificial PetroChina 8 in the chamber 15 to the height of the technological hole 3 create multiple hydroprobe 16. After the formation of the shifting space 9 from the bottom of undercut produce fracturing of rocks and pump to the hydraulic fracture fluid up to the collapse of the rock mass array 23 in slash space 9. The collapsed rock mass magazineabout and partially zavodney due to fracturing fluids.
After that include hydro and produce erosion and partial flooding tamakaimoana rock mass (hereinafter store 17).
Under the action of additional giant 18, the device for hydraulic borehole mining of solid minerals 14, there is a partial erosion of the store 17 above the level of liquid 19 and the feed flooding the store. Under the action of water filling of the magazine 17 is disintegration rocks, and the jetting device 20 for hydraulic borehole mining of solid minerals 14, working in the conditions of a flooded pit, finally puts them will be dissolved state and the direction it is in the direction of the breakthrough with a Central bore 2 contributes to the production of pulp. As the disintegration of the rock mass produce the issuance of the pulp to the surface. When downgrading store 17 below the design elevation of repeat surgery for fracture of the shear 16, closest to the worked-out space 22, magazynowania, erosion and discharge of pulp. These operations are repeated to achieve a goaf 22 artificial PetroChina 8.
After that make a complete washout store 17 and the output of pulp on the surface. Then lay the mined-out area 22 of the chamber 15 and pass to testing the following non-contiguous peripheral camera. Then, if drilled intermediate technological hole 4, similarly, produce a practice of cameras from them. In the last turn produce the development of the Central chamber of the Central bore 2 of the device for hydraulic borehole mining of solid minerals 11.
As testing each camera is laid hardening bookmark. Simultaneous testing of multiple non-contiguous cells of the same type of technological wells. For example, at the same time can work the camera from the peripheral wells 3 and 24.
To improve the disintegration of the rock mass in the array, subject to collapse, after crack formation fracturing, it serves fluid under pressure required for saturation of the rock mass, but insufficient is passed to collapse. This operation can be performed simultaneously with magazynowania, erosion and partial granting of the pulp obtained after the collapse of the previous array.
After working layer are transferred to development upstream.
If minerals are represented by sockets, lenses, layers, etc. in the process of drilling allocate sites containing useful component, for example containing diamonds, and work out the layers and/or camera lying only in these areas.
To facilitate education slash space 9 and to create artificial PetroChina 8 in series between the Central 2 and intermediate, intermediate, and peripheral 3, 24, etc. are breakthrough. Breakthrough can be created due to the only jet of these adjacent wells, and in two stages - the first stage of the fracture, the second jetting washing of the wells, between which is passed linkage. The second technology is better, since after fracturing through the resulting crack will produce pulp that is obtained when the giant in the intermediate and/or peripheral production well 3.
To ensure the disintegration of the collapsed rock mass and conservation of the wall section from collapse, it is advisable liquid in the shop to support above the level of the bottom contour of the wells.
For intensification of the process d is integratsii use of surface-active substances, which add to the liquid.
Device for hydraulic borehole mining of solid minerals includes movable relative to each other the outer 25 and inner 26, with an additional monitor 27, the pressure of the column of pipes, Central polipovidnye the string of pipe 28 that is installed in the cavity of the inner pressure of the column of tubes 26, and the auxiliary pipe 29 with the monitor 30. Auxiliary pipe 29 is installed with the possibility of a fixed displacement relative to the internal pressure of the column of pipes 26 and has shared with her cavity.
Central polovina column pipe 28 can also be movable relative to the internal pressure of the column of pipes 26. At the discharge end of the outer pipe string 25 posted by nozzle fracturing 31 in the initial position overlying the monitor 30. Nozzle fracturing 31 is made in the form of a housing with a cavity 32. In the casing of the window 33, around which has a hydraulic chamber 34 with an elastic outer wall 35. The cavity 32 of the housing communicates with the cavity of the hydraulic chambers 34 and channels 36, and in the cavities of the hydraulic chambers placed spring-loaded by springs 37 and piston 38, the rods 39 which are connected with hinged flaps 40.
The device operates as follows. On the surface, prior to immersion of the device in the hole, let the Chairman pipe 29 is moved relative to the internal pressure of the column 26 and is fixed in position, when the monitor 30 is located at a specified distance from the secondary jetting 27 and is focused on it. The distance between the hydro is selected from the conditions of the monitor 30 in the soil chamber, and additional giant 27 - above Zapadnaya store 17 of the liquid 19. Then lowered into the well pipe string, and the nozzle fracturing 31 overlaps the additional monitor 27.
When the flow of fluid in the inner column of the discharge pipe 26, it enters the monitor 30 and produces erosion of the surrounding rocks. As an additional monitor 27 is blocked by the nozzle fracturing 31, no water is flowing from him and additional monitor 27 is not working.
In this mode the device operates when creating sbec shifting space of the cavity to create artificial PetroChina 8 and roots 16, i.e. the initial cavities. The creation of these cavities can be carried out in several stages, for which the device is moved along the height of the well. Movement can be both bottom up and top down, which is more appropriate, because after creating a shifting space monitor 30 remains in the soil camera for use during testing.
After creating a shifting space of the nozzle fracturing 31 placed at the outer nagn the test column pipe 25, set against the first bottom shear. Then on the external discharge column pipe 25 is fed to the nozzle fracturing 31 liquid. The liquid flows into the cavity of the housing 32, through the channels 36, the fluid enters the hydraulic chamber 34, stretches the resilient outer wall 35 and presses them to the walls of the borehole, the insulating part between the said chambers.
The spring 37 is designed so that the piston 38 will begin to move after isolation of the well and the pressure in the hydraulic chambers 34. When moving the piston 38 carries a rod 39, which in turn move the shutters 41 and 42 of the flaps 40 and open the Windows 33. Fluid from the housing cavity 32 comes in box 33, next to the isolated portion of the borehole and shear. The liquid may be supplied as in the mode of fracture (the undercut 23 is the development of cracks 43)and the water saturation of the array.
When you open the window 33, the pressure in the hydraulic chambers 34 may fall, but the spring 27 will return at some distance rods 39 and partially overlapping the window 36, the flow of fluid in the isolated portion of the well will decrease, and the pressure in the hydraulic chambers 34 will increase. Thus, regulation of the ratio of the pressure in the hydraulic chambers 34 and isolated part of the well, and under any circumstances part with the vazhiny be reliably isolated by pressing the elastic outer wall 35 of the hydraulic chambers 34 to the walls of the well.
After the collapse of the array 23 to move the inner column injection pipes 26 to release the additional nozzle jetting 27 of the nozzle fracturing 31. The liquid begins to flow in both giant 30 and 27, producing erosion shop 17, the first in the flooded conditions of the face, second - drained.
Nozzle fracturing 31 can be used only as a packer. For example, when creating cracks fracturing pumping water through the monitor 30 in the undercut (undercut can be tilted) when creating a shifting space, downhole portion of the wellbore is isolated by flow of the liquid in the nozzle fracturing 31 under pressure, providing a clamped elastic outer wall 35 of the hydraulic chambers 34 to the walls of the borehole and insufficient fracturing of the window 33.
The application of this technical solution will significantly reduce development costs. Moreover, due to the fact that the method provides selective dredging individual nests and interlayers and abandonment of the array without destroying the host nest of rocks, which if known technologies also were destroyed and brought to the surface, it becomes cost-effective to develop the deposits with low content, but a compact concentration of the useful component. Such fields include many diamondiferous kimberlites of the e tube Arkhangelsk region, in which nests with high diamond content are in the array is "empty" kimberlite.
In addition, significantly reduced the harmful effects on the environment, because, selectivley method requires significantly less water on the surface will not rise a significant amount of rocks, which entails a reduction of the area of pits and tailings.
1. Way of a hydraulic borehole mining of solid minerals, including opening deposits of the Central and peripheral technology wells, installation of equipment and testing at several stages layers from the bottom up nonadjacent cells, starting from the periphery, with education before working the next layer contour slit on the entire layer thickness, slash-and-burn area soil formed by the camera and parallel artificial patrocina of the hardening material, with a slope from the periphery to the center, magazynowania collapsed rock mass and the mined-out space hardening material, testing, and backfilling of the Central chamber, when testing each camera, after creating artificial PetroChina, height technological wells create multiple hydroprobe, after the formation of the shifting space of the lower hydroprobe produce fracturing of rocks and pump to receive the ing the crack fluid up to the collapse of the rock mass in the shifting space, the collapsed rock mass partially zavodney due to fracturing fluids to and from hydro, which produce erosion of the rock mass, as the disintegration of the latter produce the issuance of the pulp on the surface, at the lower level of the store below the design elevation, repeat surgery for fracture of hydroprobe closest to the worked-out space, magazynowania, erosion and delivery of the pulp, then the operation is repeated until reaching a goaf artificial PetroChina, after which produce a complete washout tamakaimoana rock mass, the issuance of the pulp and the mined-out space.
2. Way of a hydraulic borehole mining of solid minerals according to claim 1, in the process of drilling allocate sites containing useful component and work only camera lying in these areas.
3. Way of a hydraulic borehole mining of solid minerals 1 and 2, after fracturing, the array is subject to collapse serves fluid under pressure required to saturate it rock mass, after which produce collapse, increasing the fluid pressure.
4. Way of a hydraulic borehole mining of solid minerals according to claim 1, erosion lead from two hydro, one of which is a soil chamber, and the other above the level of Zapadnaya tamakaimoana mountain mass of the liquid.
5. SPO is about hydraulic borehole mining of solid minerals according to claim 1, the linkage and slash space formed by fracturing and further giant washout from nearby production wells.
6. Way of a hydraulic borehole mining of solid minerals according to claim 1, the liquid in the store do not support above the level of the bottom contour of the wells.
7. Way of a hydraulic borehole mining of solid minerals according to claim 1, in liquid type surfactants.
8. Way of a hydraulic borehole mining of solid minerals according to claim 1, between the peripheral and Central processing wells are drilling intermediate technological hole, development and testing of cells from these wells are similar to the working chambers of the peripheral wells.
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
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.
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.