Borehole installation for hydraulic excavating
SUBSTANCE: invention refers to mining and can be implemented at borehole hydraulic excavating of minerals. The installation consists of a high pressure column, and of a central pulp lifting column installed inside the high pressure column, interior cavity of which is connected to internal cavity of the high pressure column via a nozzle of hydraulic lift; in a lower part of the high pressure column there is installed the nozzle of the hydraulic lift; an additional nozzle with a suction chamber is rigidly connected to the nozzle of the hydraulic lift. The nozzle of the hydraulic lift is connected to the high pressure column, is designed to rotate relative to its lengthwise axis and is equipped with a tailed jet; also tails of the jet are bent opposite to rotation direction; while the suction chamber is equipped with a pulp intake with openings assembled radial to the suction chamber and directed to the side of hydraulic monitor rotation. The invention facilitates increased efficiency due to intensification of pulp formation process and due to increased per cent contents of extracted material in pulp.
EFFECT: increased efficiency due to intensification of pulp formation process and due to increased per cent contents of extracted material in pulp.
The invention relates to mining and can be used in borehole hydropobic minerals. The invention can find application in construction during construction through wells underground storage facilities for liquid and gaseous products.
Known downhole jetting unit containing: Central pulp-raising the column is rigidly connected with a flowing part of the hydraulic ejector, shank, made in the form of the tubing installed concentrically pulp-raising the casing and rigidly connected with it, with the location of the upper end of the shank above the flowing part of the hydraulic ejector, external pressure column, mounted concentric with the column shaft for rotation and axial movement relative to the latter, hidroelektra nozzle communicated with the cavity pressure column through the cavity of the shank and jetting nozzles communicated with the cavity pressure column, the inside pressure of the column at its lower end with a ledge with a beveled upper edge, and the upper end of the shank provided with an annular funnel-shaped cuff that is installed with the possibility of continuous interaction with the external surface of the pressure column and an inner surface with surface polipovidnami columns in the interval ledge pressure number is Ni (see USSR author's certificate No. 1382959, Ál. 4 E21C 45/00 1988).
The performance of the unit is determined by the percentage of ore material in the slurry is transported by airlift. The more the head of the working body affects the layer, the more intense mixing of the crushed mass of non-metallic material with a water to air mass. In the known Assembly, a working body of the shank does not provide intensive stirring of the fine fraction of the extracted material. As a result, the percentage of the latter in the slurry is low, and this leads to poor performance of the unit.
This disadvantage is partially eliminated in the borehole gidrodobychnyh the unit (see patent No. 2169839, 7 AS 45/00, 2000).
Known unit essential features is the closest device to the claimed invention and adopted us for the prototype.
Known for well hydroporinae unit contains high-pressure becoming rigidly connected with the nozzles jetting and hydraulic ejector, is rigidly connected by the suction chamber mounted on the lower end of the rod with Windows in the form of longitudinal slits, Central pulp-raising column mounted inside the rod for axial movement relative to the latter, an internal cavity which soedenjaetsja internal cavity of the high pressure rod through the nozzles of the hydraulic ejector, the above-mentioned nozzles are equipped with sharp pins, and the bottom end of the rod along the longitudinal axis installed additional nozzle jetting from the nozzles to the outlet of the working fluid.
The disadvantage of using known Assembly is the low performance is due to the fact that mining material not intensively mixed and not crushed, as without moving the nozzle jet drills out in the rock deep hole, resulting in a percentage of the crushed pulp production material is reduced, which leads to performance degradation. For intensification of comminution and displacement of the mining material in the known device it is necessary to use lifting and handling device, which also reduces efficiency and increases energy consumption.
An object of the invention is to improve the performance of the unit by accelerating grinding mining material and increase of their content in the pulp.
The technical result is increased productivity and efficiency downhole hydroporinae Assembly.
This technical result in the implementation of the invention is achieved by the well known gidrodobychnyh unit, including high-pressure becoming, Central pulp-raising column, the plant inside the high-pressure column, an internal cavity which is connected with the inner cavity of the high pressure rod through the nozzles of the hydraulic ejector. In the lower part of the high-pressure rod installed nozzle jetting from the nozzles, to which is rigidly attached additional nozzle with a suction chamber having pulpotomy window. The jetting nozzle connected with high-pressure rod for rotation about its longitudinal axis and provided with nozzles, curved opposite to the direction of rotation and suction chamber is equipped with purposesonly with Windows located radially to the suction chamber and directed in the direction of rotation of the giant.
The claimed technical solution is different from the well-known fact that the nozzle is mounted for rotation about its longitudinal axis, the nozzles are bent in the horizontal plane in the direction opposite to the rotation of the giant. The rotation of the giant intensifies the process of grinding and shaking of mining material, resulting in a percentage of its increases in the pressurized pulp. Location Windows pulmonaria radially to the suction chamber allows to intensify the process of intake and discharge of the pulp, which ultimately improves the performance of the unit.
Conducted by the applicant's analysis, vkljuchajuwih the search for patent and scientific and technical information sources, and identification of sources containing information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention. The definition from the list of identified unique prototype as the most similar in essential features analogue, has identified a set of essential towards perceived by the applicant to the technical result of the distinctive features in the claimed device, set forth in the claims. Therefore, the claimed invention meets the condition of "novelty."
In the detected information, there is also no information about the technical result is achieved by the use of distinctive features of the proposed device, therefore, the claimed invention meets the condition of "inventive step".
The invention is illustrated by drawings, where figure 1 shows a downhole hydroporinae unit, General view; figure 2 - a view A-a in figure 3 - view-Century
Well hydroporinae the unit consists of a pump station 1, the high-pressure rod 2, the compressor station 3. In the lower part of the high-pressure rod 3 has a giant monitor with nozzle 4 and is rotatably on the bearing 5 with a seal 6. For about the level of rotation of the jetting nozzle 4 is supplied by the nozzles 7 with shanks, curved opposite to the direction of rotation of the giant.
The nozzle 4 is rigidly fixed additional nozzle 8 with the suction chamber 9, having purposesonly 10, 11 Windows. Inside the high-pressure rod 2 is mounted pulp-raising column 12.
Well hydroporinae unit operates as follows. Place the unit in an oil production well, set to the lowest position. Include pump station 1, the compressor station 3 and smoothly allow pressurized fluid into the internal cavity of the high pressure rod 2. Water with great speed out of the nozzles with the shank 7, bent in the direction of the tangent to the rod, creating a reactive force. This force accelerates the nozzle 4, together with an additional nozzle 8 through which the intensity of polovrageanu increases. Pulp under pressure enters into the suction chamber 9 with purposesonly 10 and 11 located radially to the suction chamber, aimed in the direction of rotation of the giant, contribute to the saturation of the pulp production material and, consequently, help to improve production efficiency.
Thus, the above data indicate that the claimed device provides high perceived by the applicant of the technical result, namely improving the productivity and the STI due to the intensification of the process of polovrageanu and increase the percentage of extracted material in the pulp.
Proposed borehole hydroporinae unit provides:
- improving the performance of the aggregate;
the energy savings per unit of production material;
- reducing the cost of production.
Well hydroporinae unit, including high-pressure becoming, Central pulp-raising column mounted inside the high pressure column, an internal cavity which is connected with the inner cavity of the high pressure rod through the nozzles of the hydraulic ejector in the lower part of the high-pressure rod installed nozzle jetting, to which is rigidly attached additional nozzle with the suction chamber, wherein the jetting nozzle connected with high-pressure rod for rotation about its longitudinal axis and provided with nozzles with the shank, curved opposite to the direction of rotation and suction chamber is equipped with purposesonly with Windows located radially to the suction chamber and directed in the direction of rotation of the giant.
SUBSTANCE: invention refers to open development of mineral placers, particularly to mining and concentration of gold containing placers in winter. The procedure consists in exposing works, in sand excavating and in sand transporting to a basin, in flushing and in dump piling. Also, in winter primary excavation and sand transporting are performed with preliminary piling sand on ice of the basin, while the secondary excavation and flushing are carried out in a warm season.
EFFECT: increased degree of disintegration of hard flushed clayish sand and reduced losses of valuable component.
2 cl, 2 dwg
FIELD: oil and gas industry.
SUBSTANCE: invention refers to development of mineral deposits, particularly clay placers, and can be implemented in mining industry. The method consists in striking developed placers, in their layer-specific excavation with parallel trenches leaving between-trenches massifs, in concentrating and in piling. Also between the first trench and the circuit of developed deposit an additional ditch is made, wherein water is supplied; when a successive trench is entered, each preceding trench is successively filled with water. When the last trench is driven, deposit is flooded; between trenches massifs are debugged by means of a drag or dredger; notably, debugging is performed from the first trench to the last one.
EFFECT: increased efficiency of clay placers development by means of increased degree of disintegration and extraction of valuable component at reduced technological losses.
2 cl, 2 dwg
SUBSTANCE: invention refers to development of deposits, particularly, gravel deposits, and can be implemented in mining industry. The method consists in stripping sand, in excavating and transporting sand to a hopper of a washing installation, in concentrating and in piling. Prior to transporting sand into the hopper of the washing installation, sand is piled in a trench laid in the center of the gravel deposit along the length of a production block at the depth below the level of the soil of the sand bed; the trench is filled with water. Also sands are piled in the trench below the water level, and their successive excavation is performed by the underwater method.
EFFECT: increased degree of disintegration of hard washed clayish sand and reduced process losses of valuable component with reduced cost for sand transporting.
SUBSTANCE: method of development of buried water-flooded placers includes preliminary concentration of useful component of sands in lower portion of placer by means of excitation of elastic oscillations in placer sands and successive stoped excavation. A tubular shell is inserted into the placer; the height of the shell exceeds the distance from the surface to the float of the spacer. Excitation of elastic oscillations in spacer sands is performed by means of their transmitting from the surface via the tubular shell. After compressive force has been formed from interior surface of the shell onto contacting surface of covering volume of barren material and after completion of vibratory processing the hydraulic stoped excavation of lower part of the placer is carried out; washing water is supplied via sprayers assembled at walls of the tubular shell and pulp is withdrawn via soil intake openings located at walls of the tubular shell between the sprayers. Also after completion of stoped excavation of lower part of the placer the stoped space is backfilled by supplied backfilling pulp and water withdrawal. Further backfilling pulp is formed from mixture of water with barren rock, for instance, with tailings of sand concentration. After backfilling of excavated space pressure onto surface of covering volume of waste material contacting with interior surface of the shell is dropped to zero and the shell is extracted.
EFFECT: increased selectivity of excavation.
SUBSTANCE: present invention pertains to excavation of mineral deposits, and particularly to gravel deposits, and can be used in the mining industry. The method involves pre-formation of a basin, formation of a dry zone on the productive stratum and basin in the stripped area, fitting interconnected, mining, transport and dump systems into the basin. Formation of the basin in the stripped area is done after piling up sand in it, with further extraction of the latter using a subsurface technique. The minimum distance from the basin to the heap of sand, as well as the depth of the basin, is determined from the maximum degree of weakening of the latter and technological parameters of the mining equipment.
EFFECT: increased efficiency of excavating high-clayey alluvial deposits.
SUBSTANCE: present invention pertains to mining and can be used in excavating deep-seated deposits of minerals, formed by layers with different strength. The method of excavating deep-seated deposits of minerals involves excavating a mining horizon, hydraulic mining of wells on the mining horizon, when mining waterlogged minerals, lying under the mining horizon. From the heading to the deposit of the mineral, dewatering wells are drilled and the head of ground water, in the productive stratum of the deposit, is lowered to a level lower than the sill of the mining horizon. To lower the head of ground water over the deposit to a level safe for mining, in the water bearing bed from the mining horizon, rising, inclined-rising, horizontal guide holes are made, and from the surface to the heading, wells with cased hole filters are made. All these wells are hydraulically linked to each other and to a pump system, from which water is supplied to a domestic water head works, undergoing preliminary purification. The invention can also be used for washing out mineral deposits when hydromining and for water collection in underground water catch basins.
EFFECT: safer mining when flooding minerals and layers above them, as well as increased efficiency of mining and improvement of environmental conservation.
2 cl, 1 dwg
SUBSTANCE: group of inventions relates to mechanical engineering and can be used directly in development of subsea mineral deposits, where mineral components are pumped out by airlift. Method for starting and stopping of offshore airlift, where starting process includes compressed air supply via pressure pipeline from compressor to mixer of lifting pipe, while stopping process includes stopping of compressed air supply via pressure pipeline from compressor to mixer of lifting pipe, compressed air supply from compressor to upper part of said offshore airlift's lifting pipe and its discharging to atmosphere, as well as compressor stopping. In the course of offshore airlift starting process amount of sea water supply to lifting pipe of offshore airlift is pre-defined, connection between upper part of lifting pipe and atmosphere is closed, compressed air is supplied into upper part of lifting pipe of offshore airlift, sea water is displaced from lifting pipe to ocean through connecting pipe, compressed air supply into upper part of lifting pipe is stopped after the required air pressure in said pipe is achieved, connection of lifting pipe with ocean through connecting pipe is closed, connection between upper part of lifting pipe with atmosphere is restored with simultaneous supply of compressed air into mixer of lifting pipe. After that, connection between lifting pipe and ocean is provided through connecting pipe, amount of sea water supplied into lifting pipe is monitored, measured pressure value is compared with pre-defined target value and balanced with it through adjustment of sea water flowrate in said connecting pipe. And when water-air mix is spread over the entire length of lifting pipe, unrestricted supply of sea water through connecting pipe to lifting pipe is restored. And in the course of offshore airlift stopping process, pressure value in upper part of lifting pipe is pre-defined, then this value is monitored during compressed air supply from compressor to upper part of offshore airlift's lifting pipe, measured pressure value is compared with pre-defined value and as soon as they become equal said compressor is stopped. After that, connection between lifting pipe and ocean through connecting pipe is closed and connection of upper part of lifting pipe with atmosphere is opened again.
EFFECT: improvement of offshore airlift starting and stopping method.
2 cl, 3 dwg
SUBSTANCE: group of inventions relates to mechanical engineering and can be used directly in development of subsea mineral deposits, where mineral components are pumped out by airlift. Method for starting and operating of offshore airlift includes pumping out of components from subsea mineral deposits as a part of hydromixture, supply of compressed air into mixer of lifting pipe, creation of multicomponent mixture after the compressed air is injected into hydromixture flow, and transporting of multicomponent mixture flow in lifting pipe of offshore airlift. In this method pressure value of air-water mixture is pre-defined in operating mixer of lifting pipe, where compressed air is supplied from compressor during airlift operation at its operating performance rate. Then compressed air is supplied from compressor into lifting pipe mixer, which is located above operating mixer, the air localised in accumulator is additionally compressed up to the pressure in operating mixer by supplying sea water into said accumulator under its static pressure. Then this additionally compressed air is supplied into operating mixer, pressure of sea water in operating mixer is monitored during the process of compressed air supply into it, measured pressure value is compared with pre-defined target value and as soon as they become equal supply of compressed air into said mixer is stopped, as well as supply of sea water into accumulator, while compressed air from compressor is supplied simultaneously into operating mixer through accumulator. After that, during offshore airlift operation, accumulator is charged with compressed air from compressor by means of parallel supply of sea water from said accumulator into operating mixer, when a difference is established between supply of compressed air from compressor to accumulator and supply of compressed air from accumulator to operating mixer.
EFFECT: improvement of method for starting and operating of offshore airlift, as well as system for its implementation.
3 cl, 4 dwg
SUBSTANCE: invention relates to mining industry and can be used in dredging of thawed placers. Method includes removal of dead ground from dredging site, digging of drainage trench, pre-dredging of sand layer, removal of boulders, flooding and dredging of sands. Pre-dredging is performed over the uncovered area through sand blading by backhoe excavator, which draws transverse juds in travelling trench.
EFFECT: improved dredger performance, reduced loss of mineral in the soil, and lower unit costs of dredging of hard-dredging placers.
2 cl, 2 dwg
SUBSTANCE: invention refers to combined development of gold placers using mini-dredges. Complex consists of a dredge with a stacker and installations meant for deep processing of sandy and clay rock of gold placers, a high-head hydromonitor device with a system controlling the barrel movement in a vertical plane, and a hydraulic transport free-flow system. Complex is equipped with a bridge rigidly fixed in the dredge nose part. Bridge is provided with a round divertor intended for movement, and a round divertor meant for a support, which are rigidly fixed on the bridge posts. High-head hydromonitor device is installed on a base rotated by means of a drive. Rotary base is hinged to the platform and equipped with linear guideways. Platform is equipped with a drive of linear guideways which are connected with a round divertor intended for movement, and provided with an additional support connected with round divertor meant for the support.
EFFECT: intensifying mining process including development of terrace high-level placers.
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.