Method of hydraulic borehole mining of mineral resources at inclined position of beds
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
The invention relates to mining and can be used for the production of loose, granular (or disintegrated) minerals through the production well.
The rich reserves of iron ore in the Kursk magnetic anomaly is estimated more than 60 billion tons. The main mass is located at the depth 450-800 m, covered with sand and clay and marl-chalk flooded sediments.
Iron ore is pereslaivaniya strong and friable ore with a capacity of up to 150-250 m, occurring at angles from 30°to 80°. Friable ore strength from 0 to 3 MPa, comprising from 15 to 35% of the total ore reserves and is suitable for hydraulic borehole mining (HBM).
Known the Way of a hydraulic borehole mining of bedded inclined mineral deposits [invention No. 1180508 from 23.09.85,]. The essence of it lies in the opening of the mining block wells drilled from the surface to the underlying reservoir rock, the execution of the reception chamber in the area vydatnou well, the erosion of minerals by hydro from the well, the hydraulic obtained slurry to vydatnou well with subsequent pumping to the surface, then drilling of wells along the axis of the mining unit, coinciding with the angle of incidence of the reservoir, carry out the linkage of the axial wells with a receiving cell, Buryats peripheral wells in l is contained, proceeds from the axial wells at an angle to the axis of the block. Utility block is carried out, starting with the latter, located along the axis of the borehole, with the development of scope of work initially to the periphery of the block and forth in the direction of the fall of the reservoir and to the periphery of the block.
All wells located on the axis of a mining block, giant washout are connected sequentially from issued subsequent to the sole of the layer and form of transport development, which is transported by dip minerals from all wells of the block.
The disadvantage of this method of mining, the inclined formation of minerals by means of auxiliary wells in relation to the occurrence of inclined seams of iron ore at KMA, presents unstable, loose, loose, broken ores, is that in this way provide for the creation of transport workings from the top of the block to vydatnou hole in the sole of the reservoir, as well as branches from the main transport produce to the extreme auxiliary wells of the block by erosion by water jet stream from hole to hole with subsequent erosion of minerals and feed stream from remote wells branch lines to the Central transport development and to vydatnou well.
The creation of such transport you is abook in loose crumbling iron ores impossible due to vplyvania, obvalivanie and their overlap with the angles of inclination of the strata predominantly more than 45°.
Closest to the claimed method and selected as a prototype is a known way of a hydraulic borehole mining of iron ores applied at KMA [Varens, AVENCOM, Agibalov and other "Experience of a hydraulic borehole mining of ores on Seriescom area KMA". Mining magazine No. 1, 1995, p.23-26]. This method is characterized by the construction hydroponicly and auxiliary wells. Thus, in the area in the period 1988-1993, experimental-methodical work on borehole hydropobic iron ore.
There were four hydroporinae vertical well with a final diameter of 300 mm and 15 wells control, auxiliary, hydrogeological diameter 90-150 mm Geological cross-section (Belleroche iron ore Deposit) typical fields KMA. The total thickness of sedimentary rocks above-ore thickness 430-460 m Ore thickness capacity of up to 420 m thickness loose (σSG- 0÷3 MPa) rich ores from 45 to 80 m, with an angle of inclination to the horizontal is more than 45°.
All hydroporinae wells were dissected all layers of friable ores. Erosion of the layers were made giant jets, the rise of the pulp by airlift different hydroponicly shells. The issuance of ore ranged from 2 to 22 t/h, fading in time.
To intensify disinte the walkie-talkie ore layers used pneumohydraulic, hydroshock effects depression method in hydroponicly wells by lowering the level in the wells by pumping air into them under pressure to 3-4 MPa and the injection of air into the auxiliary bore.
In some time intervals the flow of ore reached 60 t/h Average performance was ≈10 t/h
Because of not a regulated selection of ore in depth and its supply to the inlet of air in hydroponicly wells formed large chamber with subsequent landslides, subsidence of rocks hard rocks and ores, leading to bending and breaking threaded connections pulp-raising columns hydroponicly shells.
In the period of experimental-methodical works produced up to 90 thousand tons of iron ore from four wells. Theoretical calculations it was determined that from each well can be produced 100-150 thousand tons of ore.
The disadvantage of this method is the cyclic operation of a single production wells associated with the need for preliminary disintegration of formation of ore through hydroporinae wells with using ineffective methods disintegration of ore and its accumulation in hydroporinae well.
As shown by theoretical studies and experimental work in wells on the destruction of rocks by water jet stream, its effect on the barrier in ZAT is Plenum space decreases with depth and at depths exceeding 500 m reaches zero at a distance of 50-70 cm from the nozzle at a speed of expiration of the jet up to 100-150 m/S.
In hydroponicly wells is Samoobrona friable iron ore due to the difference of rock pressure in the walls of the borehole and the hydrostatic pressure in the well, but the volume of ore depends on an exposed surface of the borehole walls (ening), strength friable ores in uniaxial compression and insufficient per unit of time compared with the estimated performance hydroponicly wells.
Other methods applied disintegration - air-pulse, hydroshock - also ineffective. The most effective depression compared to others, but to release the liquid level in the well requires large energy consumption for operation of compressors, and a short time level rise reduces the overall effect.
The task of the invention is to develop a method of hydraulic borehole mining of minerals in inclined seams for conditions KMA and the like, means controlled delivery to hydroponicum wells masses crushed friable ores of obliquely deposited layers crossed hydroporinae and auxiliary wells in an amount to provide protection of subsoil and trouble-free estimated production volume by known means through hydroporinae well.
Technical results that may be obtained by using for the implemented inventions are:
the increase is mined from one hydroporinae wells and production volume per unit of time compared to now achieved tested currently on the objects of the CMA in borehole hydropobic;
regulation of production of ore in depth hydroporinae hole preventing falls and complications in the borehole;
- reducing the volume of construction activities hydroponicly wells and production equipment for the production of a unit of ore;
- reduction of the specific capital costs of mining.
The solution of the above problems and achieve the listed technical results became possible due to the fact that in the known method of a hydraulic borehole mining of minerals in inclined seams, including the construction of hydroporini and auxiliary wells, hydroporinae and auxiliary wells have lines along the strike of the inclined strata and cross them, and the vertical faces hydroponicly wells razvarivat below for fall layers and auxiliary wells with vertical and slanted part of the borehole, vertical Buryats to the same sloping aquifers and an inclined part includes odnoimennyi productive formations, as from the upper layers, and within the productive layers, and on Rawley in side hydroponicly wells, the distance between lines location hydroponicly and auxiliary wells determine the stability of cross - layer bridges goaf layers of friable ores, and the distance between hydroporinae and between auxiliary wells define the technical possibility of drilling inclined branches towards hydroponicly determining the disintegration friable ores between lines location hydroponicly and support all wells of the same name seams to be working out and crossed hydroporinae and auxiliary wells.
The invention is illustrated by the following drawings.
Figure 1. Section block hydroponicly and auxiliary inclined wells productive layer (top view).
Figure 2. Vertical section hydroporinae and auxiliary wells on their axis located transverse to the extension of the ore column.
Way of a hydraulic borehole mining of minerals in inclined seams is as follows.
The design scheme of the mining block 1, limited points ABCD, drilling the number hydroponicly wells along the strike of the ore strata, crossing the lower reservoir 3 (2) vertically to a certain depth in the underlying layer of solid ore 4 and quartzite 5. At a distance of L1towards lifting productive dps is ists ores are drilling the auxiliary hole 2, no less than one in planes passing transverse to the strike of the formations through wells 1 and at least one auxiliary hole 2 for each hydroporinae well between them, and on one extreme auxiliary borehole at points a and B at equal distances, which are used for wells 1 of this production unit, and for similar left and right of the mining blocks in their construction.
In order fulfill reservoirs ores 3 (they can work bottom-up, top-down or in ascending order of strength properties of friable ores in uniaxial compression), hydroporini wells produce broadening of the 6 in the wellbore in the zone to be mined seam jetting or other methods.
Of auxiliary wells produce 2 drilling spur type 7 in the direction of broadening to the nearest hydroponicum well 1, located in planes passing transverse to the extension of the ore strata through the axis hydroporinae and auxiliary wells.
Branch 7 may be drilled in the layer of the reservoir, close to the roof of his 71in the middle part of the reservoir 72or shoes 73depending on the thickness of the formation and strength friable ores in uniaxial compression.
After the breakthrough of auxiliary wells branches 7 hydroporinae production of the t extending receiving ening 6 hydroporinae well drilling tool, typically, the hydraulic motor to the curves of the sub.
The expansion produced by drilling rassharivanie drilling rod to the length of the working tube rig with turning on acceptable angle. Such an extension can be made if necessary steps to 3/4 of the length of the branch 7.
Simultaneously with the expansion of the inclined branch 7 you can use wave action in combination with the jet stream wave generator according to patent No. 2310078 from 10.08.2006, to enhance the disintegration of ore mass to be mined seam.
When extending inclined branches 7 of hydroporini wells 1 produce the pumping of slurries to determine the performance of the wells and cleaning ening 6. Then pass branch 81and 82, 91and 92and so the left and right of the Central spoetnik of each satellite hole, increasing productivity hydroponicly wells to the calculated values, increasing the number of branches up to 6-7 from each satellite, covering evenly the square block on the productive stratum.
In the auxiliary wells produce water flow not only through the tools, but also through the mouth in the amount of not less pumped airlifting system from each hydroporinae well.
Control goaf formation produced the lead through hydroporinae wells and special, intended for the control of ore mass. In addition, control of the amount of extraction of ore.
After extraction from the waste reservoir estimated volume of mineral optionally produce hardening backfill mixture necessary strength unloading spaces wells and after hardening restore vertikalny trunks hydroponicly and auxiliary wells and transferred to similar work on the development of the next layer of minerals. For a seam on a "bottom-up grouting work produced unloading chambers and vertical boreholes may not be performed.
Practical applicability and effectiveness of the proposed method hydraulic borehole mining of minerals in inclined seams show examples of specific applications.
Example 1. In geological terms Belleroche deposits of iron ore (as described in the prototype) rich ore with a total capacity of up to 422 and on the roof, including friable and polonijnych (σSG- 0÷3 MPa)subject bore hydropobic with an average total thickness of 70 m, reveal four single hydroporinae wells all layers simultaneously. Buryats control, auxiliary, hydrogeological, only 15 units (methodical with vain).
Produce ore extraction from single wells independently in time, using observations of the array and the impact on their methodical. Erosion (disintegration) of ore mass produced giant jets. The rise of the pulp produced by the controlled various hydroporinae shells. During the period of experimental-methodical works were produced 80-90 thousand tons of ore from four wells. According to the calculations hydroporinae well provided production 100-150 thousand tons of ore that averaged per well of 125 thousand tons.
Example 2. In the same geological conditions by the present method hydraulic borehole mining of minerals in inclined seams production produce a unit of wells from 3 hydroponicly and seven auxiliary. In addition, there are a number of wells, as in the prototype, methodical to monitor the array and mining block.
Hydroporinae wells are used for lifting ore hydroporinae shells with airlift-type system. Auxiliary wells are used to supply friable ore productive layers in hydroporinae well.
Mining block is in terms of band width of 35 m and a length of 150 m along the strike of the ore layers of the array.
To simplify the calculation, the efficiency of hydropobic iron ore by the claimed method, we assume that operating costs in the prot the type and declared the same way. The main costs are capital - structure wells.
In the present method compares the block wells. As the ratio of the value of wells is equal to the ratio of their diameters in the second degree, the cost of the seven auxiliary equal to one hydroporinae.
As a helper at the well block can be used for left and right blocks, we can take the ratio of 7 units.
The amount of friable ores mining of the block will determine based on the block size and the total capacity of friable ores 70 m:
- block length along strike when the distance between hydroporinae wells 50 m 150 m left and right wing on 25 PM
- length of block 7 of auxiliary wells is 150 m when the distance between them is 25 m;
- length of productive layers between hydroporinae wells and ancillary 60 m in the fall of ore layers at an angle of 55°.
The amount of friable ores will be
60×150×70=630 thousand m3.
The average density of loose ore ≥3.5 t/m3.
The mass of loose ore block will be 2205 thousand tons.
Take the coefficient of extraction of ore 50%. Equating the cost of the seven auxiliary wells to the value of one hydroporinae can compare the estimated production per well of a prototype and the proposed method.
Ore extraction at one SLE is Gino the proposed method is
The ratio of the mass of ore produced by the claimed method and the prototype is:times, i.e. the cost of capital the cost of production of 1 ton of ore by the claimed method below of 2.21 times.
In addition, in the present method, the supply of ore is regulated wells that allows you to select from each stratum estimated mass of ore is determined by the thickness ores strong and their strength, which eliminates complications in hydroponicly wells that occurred during the mining of the prototype, which increases the cost of 1 ton of ore. From the above it follows that the inventive method of mining in inclined seams thanks to the combination of essential features when using it on Bolshetroitskom field KMA and other similar on KMA more than 2 times reduces the cost of capital expenditures compared to implemented method of example 1.
Way of a hydraulic borehole mining of minerals in inclined seams, including the construction of hydroporini and auxiliary wells, characterized in that hydroporinae and auxiliary wells have lines along the strike of the inclined strata and cross them, and the vertical faces hydroponicly wells razvarivat lower in the fall, and auxiliary IC is Agin, having vertical and inclined portion of the bore, the vertical part of the Buryats to the same sloping aquifers and an inclined part are in the same reservoirs as from the upper layers, and within the productive layers, and is directed towards hydroponicly wells, the distance between lines location hydroponicly and auxiliary wells determine the stability of cross-layer bridges goaf layers of friable ores, and the distance between hydroporinae and between auxiliary wells define the technical possibility of drilling inclined branches towards hydroponicly providing disintegration friable ores between lines location hydroponicly and support all wells of the same name seams to be working out and crossed hydroporinae and auxiliary wells.
SUBSTANCE: device includes pulp lifting pipe string with pulp removal head, which is installed inside casing string of the well, air supply pipe string with nozzle provided on its lower end, which is installed inside pulp lifting pipe string with possibility of vertical movement through the head, water supply pipe string installed inside air supply pipe string and having the outlet through side surface of suction tip. Steam supply pipe is installed in upper part of water supply pipe string; there is flange coupling on casing string and pulp lifting pipe string, which tightens those strings between each other; air supply device with two cocks and pressure gauge is installed on casing string below flange connection; inside pulp lifting pipe string there installed is additional water supply pipe string the lower end of which is located on the level of lower end of suction tip and level metre the upper end of which is passed through flange coupling and tightening device, and the jack connected to one of inner pipe strings is installed on the head cover.
EFFECT: improving development efficiency of underground reservoir in permafrost sedimentary rocks.
4 cl, 2 dwg
SUBSTANCE: development method of underground reservoir in permafrost sedimentary rocks involves drilling of sand permafrost formation with a well, installation of process columns in it, supply of water, compressed air, heat carrier via them, development of working-out-capacity by thermal destruction of frozen rocks and air-lifting of developed hydraulic fluid of sand to the surface with water supply for weighing of deposit to the air-lift suction zone and additional water to working-out-capacity with control of water-air boundary level position by regulating the flow of supplied water. Well head is tightened and excess pressure is increased in underground reservoir by supplying compressed air to the well; during thermal destruction of frozen rocks there used as heat carrier is steam which is supplied with constant flow together with additional water; additional water flow is changed to control the water-air boundary level position, and recirculated water forming during separation of sand from lifted hydraulic fluid is supplied to weigh the deposit.
EFFECT: improving development efficiency of underground reservoir in permafrost sedimentary rocks.
SUBSTANCE: method includes coal bed extraction in sub-levels with the use of hydraulic mining and pressure tight bulkheads. First, sublevel drifts are put to the boarder of mine section, then, as far as the coal is extracted in the sublevel entry way there installed is portable pressure tight bulkhead with pipe and duct for the output of coal slurry and concurrent methane exhaustion from near-well bore area. Note that after sublevel working out methane exhaustion is continued from the ducts installed in pressure tight bulkheads.
EFFECT: complex and rational use of coal in subsurface resources ensured by concurrent methane extraction, reduction of coal prime cost, safe mining.
SUBSTANCE: invention relates to mining, in particular mechanised face complexes for underground development of mineral deposited in sloping beds. Mechanised face complex for production of mineral deposited in sloping beds, its development in large blocks and delivery of these blocks by escalators, includes sections of powered support, hydraulic cutting cleaning machine with rolls, providing for its motion, to cut the mineral from bottomhole massif in large blocks with the possibility to cut transverse slots while hydraulic cutting machine is immovable, and to cut back vertical slot by means of continuous motion of hydraulic cutting machine with actuators and hydraulic cutting heads joined via metal tubes, on which they are rigidly fixed, with water supply manifold, outgoing from multipliers that impart ultrahigh pressure to water, hydraulic booster installed with the possibility of its continuous feeding with water and emulsion by means of continuously joined hoses of hydraulic cutting machine to water supply and emulsion manifolds, layer of manifolds for provision of possibility to re-arrange specified manifolds as hydraulic cutting machine moves and changes its direction of movement in process of idle run. Hydraulic cutting machine is arranged with the possibility to cut longitudinal slots parallel to plane of bed, simultaneously to cutting of back vertical slot with application of special hydraulic cutting untis, hydraulic booster is arranged with the possibility to feed water of ultrahigh pressure at actuators providing for cutting of back vertical and longitudinal slots as hydraulic cutting machine moves, and while hydraulic cutting machine is immovable - with the possibility to feed all water to actuators providing for transverse hydraulic cutting, besides lengths of all sections along length of long face of continuous cutting of transverse slots at one side and back vertical and longitudinal slots at the other side are identical. At the same time complex is equipped with suspended platform joined at goaf side of the second escalator to move long face of hydraulic cutting machine along it by means of electric drive connected to driving sprocket engages with track chain arranged in cute also laid in suspension platform, and body of track chain holds all communications providing for operation of hydraulic booster: emulsion discharge and drain manifolds, water manifold and electric cable.
EFFECT: increased efficiency of cleaning face, provision of high safety level, reduced release of gas and dust into atmosphere of long face.
4 cl, 10 dwg
SUBSTANCE: invention refers to mineral resource industry, particularly to development of placers of minerals including alluvial placers of valuable minerals and noble metals including gold, silver, platinum etc. The procedure includes making vertical borehole and drilling boreholes into zone of gravel product deposits which are washed out with hydro-monitors. Produced pulp is directed to the vertical borehole. The vertical borehole is drilled facilitating entry into underground mine working constructed below the placers in a zone of stable rock. Directional upward boreholes are drilled into the zone of placers from the said mine workings. The vertical and directional upward boreholes are cased with a through filter pipe and filter strings; also hydro-monitors are installed in the filter strings of directional upward boreholes. Screw or helical hollow pipe is axially transferred and rotated for cleaning a filter part inside the through filter string of the vertical borehole and for control of pulp flow from the placer. Flush fluid coming via pointed perforation in screw or helical hollow pipe is supplied along whole length of the filter part of the through filter string.
EFFECT: maximal complete development of placer and continuous extraction of mineral.
SUBSTANCE: high-pressure bit nozzle is made in the form of confuser with straight-line channel section. Nozzle diametre do is chosen depending on density of flushing fluid, supply of drilling pump, nozzle resistance coefficient, nozzle opening degree, flow coefficient of supply channels, flow coefficient of nozzle, number of nozzles in the bit, the pressure created with the drilling bit, and length of straight-line nozzle section is determined by the formula ℓ=Kd0, where ℓ - length of straight-line channel section; K - trial coefficient (K=0.51÷0.53). Wear resistance of the material of the working nozzle part is higher than wear resistance of the material of its rest part.
EFFECT: increasing the drilling efficiency and reducing the cost of the drilling process.
SUBSTANCE: solid mass is subject to alluvial re-deposition with water flow. For that purpose, above the level of minefield section there created is water reserve, and in the minefield section there opened is some part of reserves with pioneer ditch. Drain ditch is passed from minefield section so that vortex and laminar flow zones are created in it. Water is drained from storage pond. Water flow breaks solid mass starting from pioneer ditch area, weighs the solid mass material and moves in the flow via drain ditch to the zone with laminar current conditions. In that area the productive particles are deposited, and thin clay material in the form of pulp flows to sludge pit.
EFFECT: reducing labour input and losses of useful components.
8 cl, 1 dwg
SUBSTANCE: invention can be implemented at borehole hydro-mining of any minerals at development at big depth or under complicated mining-geological conditions by means of directionally drilled (vertical-horizontal) boreholes wherein there are created zones of extracted rock crumbling; rock is flushed with hydromining aggregate and is supplied to surface in form of hydraulic mixture or pulp. The object of the disclosed here invention is to develop a hands-free method of borehole mining of minerals facilitating unchecked advance of a borehole hydro-mining aggregate at development of rock of any solid minerals. A horizontal part of borehole is drilled above sub-face of productive formation at half-diametre (in centre) of estimated production chambers on the assumption of preliminary calculations and considering ultimate strength of developed rock; this part is loaded with sectional arranged estimated elongated charges of explosive substances - (ES) divided with inert material and enclosed into a destructible shell; further these charges are successively initiated with a delay in each section, thus producing separate crushed sections divided with pillars of productive rock and containing zones of not broken rock required for unchecked advance of borehole hydro-mining aggregate along axes of productive chambers by means of flushing crushed rock and drawing it in form of hydraulic mixture or pulp to surface.
EFFECT: improved conditions for advance of hydro-mining aggregate facilitating increased efficiency and output of minerals hydro-mining.
SUBSTANCE: invention is related to mining industry, in particular to development of drowned gravel mineral deposits, also to development of alluvial deposit of noble metals and precious minerals. Method includes erection of shaft in bottom zone of productive deposits, driving of horizontal underground mines and sumps below bedrock of bottom productive deposits, in zone of stable rocks. Mines are used to arrange slanted-upward production wells, pumping of ore-bearing pulp from sumps to surface is carried out by pump-draining pumps along pulp lines. In the middle and along channel of productive deposits, on surface there are down holes erected with filter columns with full-hole openings and their exit to horizontal underground mines. On two sides of bottom zone along bottom line of productive deposits, over bedrock, slanted-horizontal wells are arranged, from which productive deposits are activated by hydraulic monitors, being transferred into pulp, which is supplied into sumps via full holes of filter columns of down holes and via slanted-upward wells. Arrangement of slanted-horizontal wells is carried out with their direction to filter columns of down wells.
EFFECT: method makes it possible to develop productive deposit to the maximum.
SUBSTANCE: invention is related to treatment of item surfaces with water jet. Water jet nozzle comprises body with the first nozzle head arranged on its front end, besides axis of outlet hole in the first nozzle head in plane of front end of body has an angle of inclination to axis of body rotation and is displaced relative to axis of rotation, and the second nozzle head, arranged on body side surface, besides axis of outlet hole of the second nozzle head is inclined to axis of body rotation to the side of its front end. Body comprises device for flow interruption, which comprises disk made in the form of sleeve, bottom and side walls of which have slots in the form of sectors and small turbine that represents impeller made of hub and blade crown, for instance with four blades arranged at an angle to nozzle axis. Disk and small turbine are fixed on axis, which it in turn is installed in sliding bearings, one of which is fixed in nozzle body from the side of front end, the other one - in central part of support, having shape of ring with ribs of rigidity, with external radius equal to radius of bore, where it is installed. Support is fixed with threaded ring.
EFFECT: improved efficiency of water jet nozzle due to dynamic action of pulsating water jets at material.
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.