Method of well hydromining at excavation with preliminary drying of minerals
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.
The invention relates to the mining industry and is intended for use in borehole hydropobic (SRS) minerals strength up to 3-5 MPa from mining shafts, wells, SunTV, horizontal mine workings, with ledges pitwall. From the technical level there is a method of hydraulic borehole mining mining through vertical wells (SRS) [VG Ahrens. Borehole mining (Geotechnology), M., "Nedra", 1986], and RF patent №51107, Ponomarenko J.V., etc.
The disadvantages of this method include:
- low efficiency of jetting devices for their operation in mining chambers filled with groundwater and work agent, because the energy of the jet quickly extinguished by the resistance of the water environment, therefore the destructive action of the jet is limited to 0.7 m from the nozzle jetting;
- limited size of the mining chambers in plan and in height;
reduced volumes of extraction of minerals from these cameras;
- the need for equipment hydroponicly wells hydraulic Elevator or airlifting systems for lifting the slurry to the surface;
- the possibility of developing of rocks, characterized by resistance to compression less than 3 MPa;
- the complexity of the design hydroponicly wells;
the necessity of building a large number hydroponicly wells, due to the small size of the mining chambers;
- high operating costs.
The aim of the invention is to eliminate said drawbacks and improving the efficiency of Geotechnology SRS minerals from mines.
The proposed method hydraulic borehole mining, which eliminates these drawbacks include: drilling of the shaft horizontal excavation, pit, etc. in the soil productive formation horizontal or radial drainage wells, ascending at an angle of 2-3° to the horizon with the aim of preventing siltation (figure 1). When permeability rocks soil not lower than the permeability of the reservoir, the drainage well you can lay in the underlying rocks. Horizontal or radial wells are available shafts and other mining or from specially studied. In unstable ground wells are under the protection of "deaf" inventory casing pipes. The depth of the horizontal (or radial) wells designated on the basis of geological and hydrogeological conditions and the technological means used. Drainage hole along the entire length equipped with a filter in accordance with the granulometric composition, the stability of the drill breeds and aggressiveness of formation waters in relation to the material of the filter and the valve on the mouth.
Over the drainage hole in od is Oh with her vertical plane construct the ascending sloped-gentle gidrodobychnyh the borehole at an angle ≤6÷10° to the horizontal, that provides delivery of slurry by gravity (see figure 1). The depth (length) of the mining well, taking into account the provisions of the depression curve is assigned approximately equal to the length of the drainage wells. Gidrodobychnyh well fix conductor, perforated pipes, unstable rock - solid casing (when driving) and equip jetting device and a latch on the mouth.
As a working agent use drain water accumulated in the sump or storage.
Development of minerals proposed method is as follows. In the beginning put into operation drainage hole. After lowering of the groundwater level in the reservoir below the position of the mouth of the production well, which is indicated by the cessation of flow of water from it to enter the giant, whose performance is in the air increases compared with the work of the submerged jet.
Mining of minerals carry out the benches in the direction from the bottom to the mouth of the production well. While the casing is extracted pointervalue on the amount being mined zagadki.
The destruction of the developed species occurs in the result of the addition of the impact of a jet stream, gravity and the growing mountain of pressure, for which a whole is consistent with a jet stream in the beginning to make undercutting array at the base of the producing interval. Formed by washing the pulp in accordance with the position of depression of the surface moving toward production wells, which will be discharged in the trunk or horizontal mining production for subsequent pumping to the surface.
After completion of the stage of destruction (erosion) of minerals in the working area, the drainage hole cover. From mining the camera on the well with the water level rise by gravity starts flowing slurry.
By reducing the solids in the slurry to an economically unacceptable level, the cycle of these works carried out in the interval following zagadki.
After testing the first production well hydroponicly complex move along the horizontal output distance set by the project. When the SRS from the stems of new gidrodobychnyh well outline rotated in azimuth and all technological operations is repeated.
Technical results that can be obtained when implementing the present invention is:
- improving the efficiency of jetting due to the draining of the working chamber and create the conditions under which the giant in the air;
- multiple increase in the size of the mining chamber and the volume of the extraction of minerals;
- simplification of the structure hydroporinae complex due to the refusal of the mining equipment is designed wells devices for transporting the slurry through the borehole;
- simplification of the process control hydropobic;
- reducing the number hydroponicly wells for mining of the Deposit (deposits);
- expansion of the scope of the SRS by performing work in shafts, wells, sumpah, in a horizontal mine workings, as well as through the development of a stronger rocks.
The set of essential features of the proposed technical solutions in General will generate substantial economic effect.
The essence of the invention shown in figure 1, where numbered: excavation - 1, the sole productive stratum - 2, drain well 3, hydroporinae well - 4, reduced groundwater level - 5, the slurry - 6.
Practical use of the method is illustrated by the following example.
In the field of phosphatic Sands reservoir average power of 12 m lies at a depth of 51 to 63 m Sands predominantly fine-grained feldspar-quartz-glauconite and mixed with cementitious carbonate and silt material. In the top sand layer is permeable chalk, role PetroChina. The soil is productive stratum is represented watered siltstone and marl. On the section of the SRS average power of argillite is 2 m Top thickness flooded marl does not exceed 10 modi phosphatic Sands, siltstones and marls hydraulically connected and form a single discharge horizon, the natural level which is at a depth of 9 m, the Total capacity of the aquifer is 24 m Average values of permeability and piezoconductivity respectively equal to 2.6 m/day and 1.8·105m2/day.
The limit of resistance of Sands for uniaxial compression is 3 MPa.
The mine is opened by a system of horizontal mine workings, passable on the soil of the reservoir, i.e. at a depth of 63 m from the surface.
From mining (normal to its axis) in soil rudosoderzhaschuyu Sands installing radial drilling UV-130M are drilling horizontal well drainage to a depth of 120 m with a diameter of 200 mm, to prevent silting well ask with a slope to the mouth of 0.01 to 0.02; the well is fixed along the entire length of casing perforated pipes with a diameter of 168 mm and equipped with a gate valve on the mouth.
Directly over the drainage hole in the same vertical plane with it are gidrodobychnyh well also with a diameter of 200 mm to a depth of 120 feet, the Well is fixed simultaneously with the drilling of "deaf" casing to a depth of 110 m Open to development by hidroponia leave the first interval. Given the nature of the curve depression formed directly above the drain what chinoy, hydroporinae the well was built with a slope to the mouth of 0.05, which is necessary for the free outflow of the slurry.
Testing lead from the bottom to the mouth of the well, which after mounting equip jetting device.
The water pressure at the outlet of the nozzle jetting assign equal to 20-30 m Ust this range jets in the air is calculated by the formula [Melnikov NV Quick reference open mining works. M., "Nedra", 1974]:
K - coefficient of air resistance, adopted 0.90;
Habout- the pressure at the nozzle jetting, m;
φ is the angle of inclination of the jet of the working agent to the wall of the mine chamber, taken 90°.
In this case,
The length of the jet used for the destruction of the rocks
Lp=0,3·Lm=9.4 m, which is sufficient for the formation of the mining chamber with a diameter of ~19 PM
For reasons of preserving the stability of the walls and prevent the collapse of PetroChina camera, a further increase in its size in the plan impractical.
The inflow to the drain hole is determined by the formula [Krauch is to SV Calculate the horizontal drainage wells while protecting the pitwall from groundwater (textbook). Belgorod, ed. VIOGEM, 1969]:
Tof- drained permeability rocks, m/day;
C - the coefficient is determined according to the schedule specified in the work;
hl- the depth of the soil of the stream's length from the well excavation;
h1- height vytachivanija groundwater in mining production.
In practical calculations due to the small values of vytachivanija compared with hl, the value of h1often neglected.
The calculations showed that the steady-state flow to the drain hole is 37.5 m3/hour.
The groundwater level along the drainage wells decreased intensively, and at the wellhead fell in a short time (less than 0.5 days) and decrease evolved towards the bottom of the borehole. The draining of the working area occurred in less than one day, as evidenced by the cessation of flow of water from the spoil is Oh well.
Upon expiration of this period in the work include the giant, at the same time as working agent use drainage water or mine water.
In the air environment, the erosion of the productive formation occurs on almost all of his power. Formed during this hydroporinae Luggage during the development of the working interval (Zachodni) becomes (theoretically) semicylinder.
After completion of the jet formation, drainage hole cover, and then begins the process of recovery of water level in hydroporinae the camera and issuance of slurry in mining production. Residual amounts of minerals are issued through the drainage hole.
After the decline in the ratio T:W<1:30 to go to practice the next interval.
Way of a hydraulic borehole mining watered minerals, including the opening of a productive layer of the mining well equipped with giant, erosion fossil giant jet, characterized in that the soil working strata of the shaft or horizontal excavation lay horizontal drainage well designed for pre-drainage of the working area and create conditions for the operation of jetting the jet in the air, and the destruction of the mineral is the od of the impact of a jet stream, gravity and the growing mountain of pressure due to the decline of groundwater levels, that enables the development of minerals to the strength of 3-5 MPa, gidrodobychnyh gently sloping well constructed in the same vertical plane with a drainage hole with a slope to the mouth, providing the expiration of the slurry by gravity and its accumulation in the sump, operation of wells hydroporinae complex is carried out alternately, first include the drainage well, after lowering the water level below the jetting nozzle to the work of the injected jetting device, the mining of mineral produce pointervalue in the direction from the bottom to the mouth of production wells, respectively, removing the casing on the working interval, in General, the proposed method can increase the size of the mining chamber diameter and length equal to the length of the production well.
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.
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
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.