Method of ore production from thin near-vertical sheet deposit

FIELD: mining.

SUBSTANCE: method includes drilling after definite intervals along the strike of the kept ahead process wells limiting the contour of the sheet deposit, the sheet deposit development at single exposed surface by means of work poles, grinding of the sheet deposit rock using the cutting tool connected with the driven stations, the ground rock removal from the work space, and its further removal by the suction device from the kept advanced process well. The sheet deposit is opened by means of the self-moving milling machine and bulldozer after determination of the sheet deposit contour in terms of length and depth of mineralization, at that the sheet deposit core grinding executed with width regulation using the replaceable head of the cutting elements prior to the sheet deposit development is controlled using the automatic system, at that removal of the ground rocks from the work space is performed during grinding by means of the spring-loaded scrapers, and the ground rock is loaded by means of the suction device in the dump truck.

EFFECT: increased capacity of the process of development of the sulphide ores from thin near-vertical sheet deposits, and increased quality of the produced minerals.

4 dwg

 



 

Same patents:

FIELD: mining operations.

SUBSTANCE: invention relates to the mining industry and can be used in stripping and mining operations at the fields, composed of dense and semi-hard rocks, with use of boom surface miners, spreaders and other mining machines. The method comprises continuous extraction and direct overburden waste disposal, continuous extraction, transportation, sorting of mineral resources. The front of mining operations is located along the short axis of the career field, the continuous working of overburden bench of high altitude is performed simultaneously on two sub-benches using boom surface miners. The overburden on the conveyors of the boom surface miners is fed through the receiving devices to the conveyors of the loading consoles of the spreader. The process of combining the conveyors of the boom surface miners with the receiving devices of the loading consoles and positioning of the spreader relative the boom surface miners is provided by the automatic control system. The mining operations are carried out with the use of excavating milling machine, the mineral resources are fed by the loader to the hopper of the mobile reloading unit with a conveyor and then to the mobile-sorting unit.

EFFECT: increase of the productivity of mining operations in the development of deep deposits of mineral resources composed of dense and semi-hard rocks.

2 dwg

FIELD: mining.

SUBSTANCE: method of development of solid mineral fields using the excavating milling machine and scrapers comprises the use of the excavating milling machine for rock loosening with placement of milled rock mass into the dug-out trench from which it is taken by the scraper which follows the excavating milling machine continuously without stopping. The scraper scoops the rock mass to the ladle by means of the loading tray which fills the front part of the ladle with rock mass and then moves using a rake wall, and the released front part of the ladle is filled with rock mass again. Hydraulic cylinders of the tray control mechanism lift the loading tray with rock mass for final filling of the ladle front part. The ladle is unloaded through the formed slot between the ladle bottom and the loading tray lifted in guides by means of the back wall which moves to the front part of the ladle with the rake wall.

EFFECT: method improves the operational reliability and productivity when performing stripping and mining works on the fields formed by dense and hard rocks using excavating milling machines and scrapers.

2 cl, 9 dwg

FIELD: mining.

SUBSTANCE: this process comprises open coal extraction by cut chambers, production of barrier posts and backfilling of said chambers. Drilling hardware represents a milling driller located on day surface with drilling tool inclination of 45-90 degrees from vertical line. Note here that coal removal from blocks is performed with the help of hydraulic drawing device at liquid-to-solid ratio equal to 1:3. There, coal pulp is directed to coal dewatering to 7-8 % while effluents are forced to desliming and circulation.

EFFECT: higher efficiency and safety of edge seams development.

6 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method comprises the cleaning of coal bed or beds by striking by open mining operations and installation on a bed of a drilling unit, for coal drilling-out at an angle from 60 to 90, with reference to the bed strike axis, and to the depth 100 meters and deeper. To increase a productivity of coal extraction, and also to decrease of load on the cutting working body in case of emergencies, a bucket auger is formed by two parts, namely the cutting working body and a lift cylindrical ladle connected to each other by the coupling device. Inside the bucket auger an auger-drill element for loading of minerals into the lifting cylindrical ladle is installed.

EFFECT: improvement of efficiency of development of steeply pitching coal beds and environmental safety of mining operations.

7 cl, 3 dwg

FIELD: oil and gas industry.

SUBSTANCE: invention relates to open development of mineral fields, more exactly to open development of the long steep dipping fields with internal dumping. Method when borrow pit length is divided to turns, from them first turn is developed to design depth with external dumping, and second turn is developed using internal dumping, locating overburden to the developed space of the first turn with common formation of the dumping tiers with progress of mining towards end through full depth. At that the work zone through height is divided to two parts, bottom part opening and development are performed by longitudinal inclined layers with lifting 20-25% towards end using the wheel loaders and vehicles able to move over these steep grades, height of the bottom part is determined as per mathematical equation. The top part of the work zone is developed using the transverse development system and sliding access tracks, their width is accepted based on the condition of their use for dumping of the exploded rocks upon their widening and simultaneous assurance of two-way passage of vehicles ensuring the cargo movement between the bottom and top shelves, the longitudinal inclined layers of the bottom part of the work zone are developed by separate formed in series from top to bottom near-vertical-horizontal layers with maximum height, determined considering trajectory of the loader bucket movement, during development of each successive near-vertical-horizontal layer the rocks are preliminary loosened, the loader excavates it and loaded in vehicles located at horizontal sites at minimum distance to the mine working.

EFFECT: technical result is decreased additional sides spacing to arrange the opening mine working, and reduced distance of overburden transportation from the work zone of the borrow pit to the internal dumping.

2 dwg

FIELD: mining operations.

SUBSTANCE: method comprises the construction of three artificial elements: impervious screen, a protective berm, a protective coating. And the impervious screen is created by drilling of inclined wells of large diameter in the winter period from the upper site of the ledge nonworking edge side most affected to thawing, parallel to the slope surface at its full height followed by filling them with ice rock stones, chilled fresh water and freezing with natural cold, and the protective berm is erected over the mouth parts of the wells, starting from the upper edge of the ledge of the tapered section of calculated height, using layered freezing of overburden rocks, which in the summer period, including the surface of the ledge slope, to prevent thawing, covered with the protective coating, which is made in the form of removable flexible moisture-heat- and light-reflecting mat, removed with the onset of winter, the thickness of which is determined based on the mathematics.

EFFECT: prevention of thawing of frozen rocks of non-working ledge edges of pits.

1 dwg

FIELD: mining.

SUBSTANCE: method comprises preliminary loosening of a block of rocks and half-rocks by simultaneous massive drilling holes in it with the maximum density across the whole area of the block prepared for extraction, using a multibar drilling unit, followed by the extraction of rock by machine ways destroying the rock solid blocks between the holes.

EFFECT: complete elimination of harmful effects on the environment and the operational staff at drilling and blasting loosening rocks.

2 cl

FIELD: mining.

SUBSTANCE: invention relates to the method of open mining of mineral deposits with creation of a dump. The method includes separation of career space by zones, height and pit perimeter, cutting of ledges and horizons on which overburden and mining works with removal of rocks by truck or by rail into dumps and via ore chutes to reloading points are conducted, and dumps are built up using the cyclic action facilities. Meanwhile a convex form of a working edge is formed, gradually being fitted into the edge differentiated by steepness on a final contour which is built up in view of minimum disturbance of walls of slopes and a edge according to the technology with minimum consumption of explosives (E) with removal and dumping of rock into a main dump located near a zone of overburden works outside a contour of a steep edge of a pit of the 1st phase; initially temporary dumps are used with self-transportation of rocks outside a pit, and with their partial re excavation, provide the minimum shoulder of tramming of rocks and ore using the crushing reloading points and conveyors from inclined planes on the top horizons to the steep and vertical at completion of a pit. And with deepening of mining operations the overburden zone is divided into two sites and rock is moved by combined transport from two sides into a dump under construction parallel to a edge slope in view of deformation of its separate sites, and rock dumping on a dump after crushing is carried out by line transport facilities using the mobile console, the minimum shoulder of tramming of rock and ore and costs of development of mountain weight on the first and the subsequent stages (turns) are ensured, and the first two layers of a dump are dumped according to cyclic and line TsPT technologies using motor transport or loaders (at re-excavation of rocks) that provides stability and robustness of the dump front according the developed technology of dumping, at the final stage the third layer is dumped, and the fourth layer of dump if necessary, according to its calculated volume and height and limit depth of a pit.

EFFECT: improvement of efficiency of field development during construction of a dump with large volume and height at decrease of costs of stripping and improvement of safety of dumping.

4 dwg

FIELD: mining.

SUBSTANCE: after performance of drilling and blasting operations in an overburden bench during layer-by-layer excavation of the blasted rock to an extended bench and a final blade circuit on the formation roof of the mineral deposit within excavation heading throughout the length of the slab there left is a layer of the rock with negative temperature. This allows developing a zone of stable freezing, warming it up and strengthening it by action of solar insolation during development of the upper part of the breakdown. The rest rock layer is excavated to a final blade circuit after disposal of the upper part of breakdown throughout the length of the excavation slab.

EFFECT: reduction of influence of repeated freezing on productivity of a drag line and provision of its stable operation during excavation of blasted rocks of an overburden slab.

3 tbl, 2 dwg

FIELD: mining.

SUBSTANCE: method involves positioning of an automated complex for deep development relative to the working face considering the direction of ore bodies settings. Control of mine rock parameters is performed by means of control sensors of physical and mechanical characteristics of mine rocks for adjustment of a mine rock cutting force considering rotation speed of a working element and movement speed of the working element in a vertical plane throughout the cutting depth and cutting direction by means of hydromechanisms of telescopic retraction and a turning mechanism of the head section. Width of capture of the ore body plane in a horizontal direction is provided by means of the positioning mechanism of the complex relative to guides; with that, information on circuits of destructed mine rock is sent from control sensors of mine rock circuits to a system control unit.

EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock.

2 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: present description relates to the cutter head for mining machine, and in particular to gear of the force transition to the cutter head of the mining machine, such as continuous miner. The machine for the ore bed development includes: motor with shaft, cutting drum with specified motor and connected to ring tooth-wheels. The primary planetary gear connecting the motor and cutting drum and containing sun gear connected with shaft for force transition to the planetary pinions entering in the engagement with the internal ring tooth-wheel. Secondary planetary gear comprising sun gear receiving force from the ring tooth-wheel and transmitting the rotation force by the non-orbital planetary pinion. Spur gear secured to each side of the non-orbital planetary pinion, at that each spur gear engages with the ring tooth-wheel secured to the cutting drum.

EFFECT: possibility of use of same motor to drive various parts of the cutting drum, as spur gears can engage with various parts of the drum.

10 cl, 6 dwg

FIELD: mining.

SUBSTANCE: method involves positioning of an automated complex for deep development relative to the working face considering the direction of ore bodies settings. Control of mine rock parameters is performed by means of control sensors of physical and mechanical characteristics of mine rocks for adjustment of a mine rock cutting force considering rotation speed of a working element and movement speed of the working element in a vertical plane throughout the cutting depth and cutting direction by means of hydromechanisms of telescopic retraction and a turning mechanism of the head section. Width of capture of the ore body plane in a horizontal direction is provided by means of the positioning mechanism of the complex relative to guides; with that, information on circuits of destructed mine rock is sent from control sensors of mine rock circuits to a system control unit.

EFFECT: increasing productivity, improving reliability and enlarging technological efficiency of destruction of rocks of different strength and coherence degree by controlling a cutting force in a zone of processing and formation in a surface layer of the processed massif of destruction zones considering strength characteristics of rock.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: rock massif is disintegrated in crosswise direction by heading-and-winning machine planetary-disc actuators It is performed by serial intersecting cuts in radial-tangential and tangential-radial directions made by cutters of disc running in opposite directions. Said discs are set at the angle to plane formed by cutter lengthwise axis and radial direction relative thereto.

EFFECT: decreased working forces of hearing and wining machine.

2 cl, 3 dwg

Header cutter // 2521985

FIELD: process engineering.

SUBSTANCE: invention relates to continuous-operation headers. Header cutter comprises support element, extensible cutting head arranged at support element front end with central main part and at least one extensible drum part arranged at butting head end outside in axial direction from said cutting head main part. Extensible drum part has axial inner end abutting on cutting head main part. Axial outer end comprises inner end structure secured to cutting head main part and outer cylinder secured thereto. Inner cylinder secured to said inner end structure is located inside outer cylinder and aligned therewith. Extensible cylinder has inner circular expanded end with the part located between said inner and outer cylinders. End cover has ledge accommodating inner cylinder outer end aligned therewith. First and second spaces are formed between said cylinders. When fluid flows through said spaces extensible cylinder displaces to pulled or pushed position.

EFFECT: drum part that features extension and locking forces higher than those in usual cutting heads.

3 cl, 6 dwg

Heading machine // 2498063

FIELD: oil and gas industry.

SUBSTANCE: heading machine contains actuating device, support lifter, caged platform, electric equipment, control post, feeding mechanism, conveyor and chassis. In pivot mechanism located at chassis and driven by swing hydraulic cylinders spherical roller bearing is installed at bearing axis inside two-sided plain thrust bearing. Plain thrust bearing consists of assemblies (two at each side) segments in circumferential direction; segments are made of wear-resisting steel and are fixed by sunk screws.

EFFECT: decrease in dimensions and increase in service life of heading machine.

4 dwg

FIELD: oil and gas industry.

SUBSTANCE: heading set of equipment includes heading machine with actuator device fixed at it by timberer with hold-down beam and spacing cylinders. Turning shaft at hold-down beam is equipped with turning mechanism at the machine conveyor. Manipulators are equipped with drilling and anchoring tools with permanent anchorage. Hold-down beam is equipped with sliding telescopes; manipulators with permanent fixtures are fixed at sliding telescopes of the hold-down beam. Turning shaft is made as load lifting telescopic boom with lifting and spacing cylinders. Hold-down beam at carry does not protrude beyond machine dimensions.

EFFECT: improving reliability of timberer, reducing errors at erection of permanent anchorage, increasing mobility and expanding scope of application both with minimum and maximum draft size.

5 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method involves uniform destruction of rock mass with continuous cross cutters of cycloidal direction with working tool of planetary flat disc actuators and of tangential direction with working tool of rotary elements. The latter are installed behind front and rear parts of the disc and fixed on reduction gears of planetary flat disc destruction elements.

EFFECT: increasing rock mass destruction efficiency using cross cutters.

2 cl, 3 dwg

FIELD: mining.

SUBSTANCE: method is implemented due to destructing the working face with cross cutters using rotary and planetary disc working members with lower power consumptions and yield of small ore fractions. In order to improve the efficiency of cross cutters, rock-destructing tool of planetary disc members moves in cycloidal-radial directions.

EFFECT: higher efficiency of destructing processes of mine rocks using heading-and-winning machines with cross cutters.

2 cl, 2 dwg

FIELD: mining.

SUBSTANCE: tunnelling machine actuator comprises a boom, a dispensing reducer and two breaking-loading crowns, axes of which are parallel to the longitudinal axis of the boom, the direction of their rotation is mutually opposite, and the body of each breaking-loading crowns is arranged in the form of a truncated conical surface combining a smaller base at the side of the bottomhole with a larger base at the side of the dispensing reducer. On the outer surfaces of bodies of breaking-loading crowns there are trihedral prisms installed with disc tools as capable of covering trajectories of movement and reversing rotation directions.

EFFECT: higher efficiency of mine tunnelling by combination of breaking, grinding and loading processes in a tunnelling actuator.

6 cl, 11 dwg

FIELD: mining.

SUBSTANCE: mining tunnelling combine comprises a displacement mechanism and a boom or a frame. On the frame there are at least two rotary cutting heads and two cutting rollers. Axes of cutting heads rotation pass in direction of tunnelling or are arranged at the sharp angle relative to tunnelling direction. Two cutting rollers are installed in parallel and behind the cutting heads, and may be arranged on the foot and on the roof, accordingly. Both cutting rollers comprise end sections capable of sliding to the profile width to form a substantially rectangular profile of cutting. At the same time each cutting roller is separately hingedly connected with the boom or the frame with the possibility of height adjustment, and each cutting roller has a diameter corresponding to at least one fifth of diameter of cutting heads cutting.

EFFECT: formation of a rectangular profile of a tunnel by a mining machine, exclusion of operation to remove curved profiles, higher safety.

5 cl, 5 dwg

FIELD: open-cast mining.

SUBSTANCE: invention relates to continuous-operation self-propelled device designed for checking possibility of mining mineral materials and taking out interlayers whose properties, from point of view of their breaking and further transportation, are of vital importance at open cast mining. Proposed device has running gear, frame with drive unit and control panel and cutting drum arranged before running gear and equipped with cutting tools. Said drum is installed in supports of carrying frame for rotation around horizontal axis and is made for adjusting position in height by means of cylinder installed between frames and carrying frame. Crawler-type running gear is used. Cutting drum passes over entire width of device, and it is furnished with guide partitions and guard shield, is functionally connected with chute-like housing and is made for stepless change of speed of rotation, speed of feed and adjusting transverse tilting from one of two sides relative to working platform owing to vertical adjustment of position of one of hinge joints connection device frame and carrying frame which is made in form of forked rotary cantilever.

EFFECT: improved operating capabilities of device.

5 cl, 5 dwg

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