Method of development of steeply pitching coal beds and device for its implementation

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

 

The claimed group of inventions relates to mining and can be used in the development CROTONALDEHYDE layers of minerals, mainly coal deposits, at the final stage of the open development and already spent career fields.

The known method and device for the extraction of coal from a coal seam by drilling-out rectangular workings and transportation of coal using auger on the day surface, with subsequent overload on a continuous conveyor, which overloads the coal truck or remote storage (see U.S. patent No. 4059163, M. CL E21C 25/58, E21C 27/22 from 16.08.76 G.).

The disadvantages of this method and device are the lack of possibility of changing the angle of inclination of the auger for drilling-out of inclined coal seams, the lack of possibility of Autonomous movement of this device for the production of drilling-out of coal in a mine or a career, high cost of transportation and installation, all of which these drawbacks leads to low productivity and efficiency of this method and device for its implementation.

The known method snegoborbe the development of thin seams of coal deposits by drilling-out of coal snegoborbe dishwasher with open surface and its issuance used�eat dragline (see U.S. patent No. 4589700, IPC. CL E21C 41/31, E21C 47/00, E21C 41/26 from 20.05.1986 G.).

The disadvantage of this method is low productivity, significant losses of minerals, of limited use for the development of coal deposits, as well as the opportunity to use this method only as a subsidiary process.

Also known a method of extraction of mineral reserves with the help of developers with thin seams sectional conveyor installation and multi screw conveyor (see patent WO 95/02746, IPC CL. E21C 41/28 from 12.07.2004).

The disadvantage of this method is that it has limited scope, as it involves the mining of the mineral only after reaching the open cast mining of marginal Stripping ratio, and only low-power, single, horizontal or flat seams. In addition, in this method, almost no attention is paid to the technology and process parameters to be mined, and mainly presents the design features of the units and mechanisms of the device in connection with a modification.

Closest to the claimed invention is a method of mining from the pit, trenches or other excavations by opencast mining and dredging useful�about fossil excavation chambers, leaving between them a safety pillars and the subsequent laying of the cameras that are implemented with the use of a complex of open-underground mining (see RF patent №2247241, IPC. CL E21C 41/00 on 20.06.2003).

The disadvantage of this method is that it does not provide the possibility of mining steep seams, and also requires the preservation of the safety pillars between excavation chambers formed by open-underground mining (copper). In turn, this leads to the necessity of switching from open and open-underground mining of seams, carried out with copper, the extraction of minerals by underground mining. While preserving the safety of pillars leads to significant losses of minerals, and it generally significantly reduces the economic efficiency of field development.

The closest solution for the implementation of this method is the drilling device and drilling method, including cutting working body, made with the possibility of rigid attachment to the lower end of the rod, suspension crane, designed to keep drilling tool with a bar on the crane rope, the actuator for actuating the rotation of the rod (see U.S. patent No. 6814167 B2, IPC. CL E21B 7/02 from 9.11.2001).

The disadvantage of this device is its no�Kai performance by regularly removing borax for emptying from the rocks, which also requires significant time and operating costs. In addition, this device is not adapted to the excavation of minerals on the surface during development of deposits of mineral raw materials, used for drilling wells.

The technical result of the invention is improving the efficiency of mining of steeply dipping coal seams, by applying the open method in combination with a drilling device for advanced coal extraction and refining of coal seams to a licensed boundaries without excavation of overburden.

The invention consists in that in the method development CROTONALDEHYDE coal seams, including the open development and coal extraction excavation chambers in a reciprocating path, leaving between them a safety pillars and the subsequent laying of the cameras, the coal produced from drilling by the drilling device placed on the head of the coal seam, with the angle of inclination of the drilling tool corresponds to the angle of incidence of the coal seam and can be in the range from 60 to 90° to the horizontal.

The method also lies in the fact that the drilling excavation of coal from the chamber using wells with a diameter from 0.5 to 4 m down dip of the stratum,at a depth of 100 m and more. Excavation chamber is formed along the strike of the coal seam, the size of the extraction chamber, along strike, are determined by the stability of the roof and floor of the reservoir, wherein the length of the extraction chamber can be in the range of 6 to 30 m, and the width of the excavation chamber is determined by the capacity of the coal seam. Between excavation cameras left pillar width 0.5-1.0 m performing barrier and protective functions.

The method also conducted a preliminary hardening of the walls of the excavation chamber along its perimeter with the help of injection wells with a diameter 75-250 mm and hardening compounds, and after the mining of the camera is the mined-out space in the overburden.

Drilling device for the extraction of minerals provides drilling tool adapted to be rigidly mounted on the lower end of the rod, suspension crane, designed to keep drilling tool with a bar on the crane rope, the actuator for actuating the rotation of the rod, characterized in that the drilling tool is made of kosemura consisting of cutting working body and cylindrical Elevator bucket, inside of which is installed a screw element for loading coal in cylindrical Elevator bucket.

Wherein the outer rod is made hollow inside of the mouth�established independently moving inner rod, wherein the inner rod is rigidly fixed in its lower part with a cylindrical Elevator bucket, and raising it at the expense of crane rope. And herself, an external rod acts as a guide for lifting cylindrical bucket.

In addition, couselor and cylindrical Elevator bucket is provided with a coupling device for connecting the upper part of the cutting working body with the bottom part of the lift cylinder bucket.

The proposed method allows to increase the efficiency of mining of steeply dipping coal seams and environmental safety of mining operations through the use of the open method in combination with a drilling device, which allows for a quicker extraction of coal and development of coal seams to a licensed boundaries without excavation of overburden.

This is achieved by Stripping the coal seam or seams on stretch open cast mining and the installation of strata drilling device for drilling-out of coal at an angle of 60 to 90° relative to the axis of stretch of the reservoir, and a depth of 100 m and more in diameter wells from 0.5 to 4 m. the Drilling coal excavation is made cameras, the size of which is determined by the stability of the roof and floor of the reservoir, and are in the range from 6 to 30 m. Between excavation cameras left barrier pillar width 0.5-1.0 m, designed�known barrier and protective functions which is pre-hardened before the start of the mining chamber, through the creation of special wells with a diameter 75-250 mm and use a hardener composition, and after the mining of the camera is the mined-out space in the overburden.

To improve the performance of the extraction of coal and reduce the load on the cutting working body in emergency situations, couselor made of two parts, namely, cutting working body and cylindrical Elevator bucket, connected by a coupling device. And inside kosemura set screw member to download the mineral in cylindrical Elevator bucket.

The above method and device for its implementation allow to solve problems of development CROTONALDEHYDE coal seams without significant economic costs for works and reclamation deposits, followed by open and underground mining of mineral deposits. In addition, this invention improves the safety of life at minerals extraction and ecological safety of the environment.

Fig.1 shows a diagram of the technology development CROTONALDEHYDE coal seams minerals: (a) side view section AA, b) V� above; in) front view section b-b; Fig.2 is a diagram of an apparatus for carrying out the method; Fig 3 is a diagram of the device of kosemura, section C-C.

Technology development CROTONALDEHYDE coal seams contains the open pit 1, coal bed 2, an extraction chamber 3, the drilling device 4, a mining borehole 5, barrier pillar 6, injection wells 7, waste excavation chamber 8, the filling material 9, crane rope 10, the actuator 11, couselor 12, the cutting working body 13, the screw member 14, a cylindrical Elevator bucket 15, the outer rod 16, the rod 17, small crane suspension 18, a large crane suspension 19, the coupling device 20.

Method development technologies CROTONALDEHYDE coal seams is as follows. Open cast mining pre-Stripping of the coal seam 2 along strike, which is a horizontal flat area. Then on the levelled platform mounted drilling device and drilling of coal at a depth of 100 m or more wells with a diameter from 0.5 to 4 m.

The process of drilling-out is made along the strike of the coal seam excavation chambers 3, the size of which is determined by the stability of surrounding rocks of the roof and ground, and power (b) coal seam 2 and ranges from 6 to 30 m. In this case oshodi drilling device 4 can be in the range from 60 to 90° relative to the axis of the strike of the reservoir (α).

Through the actuator 11 for actuating the rotation of the outer rod 16, suspended by a large crane suspension 19, intended to retain the drilling tool with a bar on the crane rope 10, couselor 12 vyborove coal using a cutting working body 13. Then the coal with the screw element 14 enters the cylindrical Elevator bucket 15. After filling the internal space of the cylindrical Elevator bucket 15 coal, couselor 12 rises to the surface, where it is then unloaded onto a conveyor device for moving the storage area.

Moreover, to improve efficiency productivity and reduce the load on the cutting working body 13 in emergency situations, couselor 12 is made of two parts, namely, the cutting of the working body 13 and a cylindrical Elevator bucket 15, connected by a coupling 20. Cutting working body 13 is rigidly secured on the outer bar 16, is made hollow inside and driven through the actuator 11. Inside the outer rod 16 has internal rod 17 for lifting cylindrical Elevator bucket 15, with the help of a small crane pendants 18. When lifting the lift cylinder bucket 15 the unlocking of the coupling device 20 and the disengagement of the screws�th element 14. Then cylindrical Elevator bucket 15 is connected through a small suspension crane with crane 18 rope 10, the outer guide rod rises to the surface, where the coal is discharged.

After the mining chamber 8, it is laying backfill material 9, for example, in the overburden. Then the drilling device 4 is moved to the next excavation chamber 3, which is separated from the waste excavation chamber barrier 8 whole 6. The use of barrier pillar 6 eliminates the ingress of backfill material 9 disposed in the waste of the cutter chamber 8 in the space of reference mining, and to prevent the collapse of the rocks hanging and lying sides of the goaf. And to give the necessary strength of the barrier pillar 6 pre-strengthen by means of injection wells 7 diameter 75-250 mm and hardening compounds. The dimensions of the barrier pillar 6 depend on the capacity of the coal seam 2 and type hardener compositions and are in the range from 0.5 to 1 m.

1. Method development CROTONALDEHYDE coal seams, including the open development and dredging of coal mining and cameras, creating a barrier pillars, the Foundation excavation of the chambers, characterized in that the drilling of the coal is made at an angle of 60 to 90° relative to the axis about�the tyranny of the coal seam, and to a depth of 100 m and more.

2. A method according to claim 1, characterized in that the dimensions of the excavation chamber is determined by the stability of the roof and floor of the reservoir and are in the range from 6 to 30 m, and between them is maintained barrier pillar width from 0.5 to 1.0 m.

3. A method according to claims.1, 2, characterized in that the hardening of the barrier pillar is made prior to mining of the camera when using injection wells with a diameter 75-250 mm and hardening compounds.

4. Device for the extraction of coal containing drilling tool adapted to be rigidly mounted on the lower end of the rod, suspension crane, designed to keep drilling tool with a bar on the crane rope, the actuator for actuating the rotation of the rod, characterized in that the drilling tool is in the form of kosemura consisting of cutting working body and cylindrical Elevator bucket, inside of which is additionally inserted screw member to transport coal Elevator in a cylindrical bucket.

5. The device according to claim 4, characterized in that the outer rod is made hollow, in which are set independently moving the inner rod, the inner rod is rigidly fixed in its lower part with a cylindrical Elevator bucket, and raising it at the expense of crane rope.

6. Device according to claims.4, 5, perf�occurring, that the outer rod is directing for cylindrical Elevator bucket, to guide and hold the drilling tool at the angle corresponding to the angle of incidence of the coal seam, at the bottom of the unit should be installed a special guiding device.

7. The device according to claim 4, characterized in that couselor Elevator and the unit is equipped with a coupling device for connecting the upper part of the cutting working body with the bottom part of the lift cylinder bucket.



 

Same patents:

FIELD: oil and gas industry.

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FIELD: mining operations.

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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.

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FIELD: mining.

SUBSTANCE: grooving device for use with drilling rig for drilling multiple parallel crossing boreholes close to each other in such a way that the groove is formed in solid material as rock, stone mansonry or concrete. Grooving device includes guiding part connected to body part by at least one bracket. Guiding part is located in previous drilled borehole; and body part and impact-rotational instrument together form a changeable volume chamber that contains flushing liquid medium that absorbs the transmission of waves form impact stress of impact device to grooving device.

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Coal cutter-loader // 2357080

FIELD: mining.

SUBSTANCE: invention refers to mining industry and is designed for mechanized development of coal beds. The coal cutter-loader consists of feed mechanism, of a tool for intake of core with cutting elements secured on the end of the tool and projected to both sides from the wall of the tool, of a tool rotation mechanism with a drive asembled to travel lengthwise in a vertical plane and connected to the feed mechanism, and of a transporter. The coal cutter-loader is equipped with a base, an undercarriage with a drive, and mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face, this rotation mechanism is connected to the tool, to a case for accumulating coal core, and to an offtake telescopic chute for supplying core to the transporter. Also the feed mechanism is made in form of a carriage connected to a drive by means of a lead screw; the carriage is mounted on a bed plate, which rests on a base. Mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face are made in form of lead screws with drives, to which correspondingly the rotation mechanism and the feed mechanism carriage are connected. The rotation mechanism is installed to travel along guides assembled on the carriage by means of the mechanism of lengthwise travel relative to face; the mechanism of lengthwise travel is installed in its turn on the carriage. The case for core accumulating connected to the tool has a rectangular opening and is equipped with a driven swivel gate. Notably, the movable part of the offtake telescopic chute for supplying core to the transporter is attached to the said case opposite the said opening; the fixed part of the chute is secured on the carriage by means of a bracket.

EFFECT: increased efficiency of coal cutter-loaders and improvement of work environment in coal mines.

4 dwg

Coal cutter-loader // 2357080

FIELD: mining.

SUBSTANCE: invention refers to mining industry and is designed for mechanized development of coal beds. The coal cutter-loader consists of feed mechanism, of a tool for intake of core with cutting elements secured on the end of the tool and projected to both sides from the wall of the tool, of a tool rotation mechanism with a drive asembled to travel lengthwise in a vertical plane and connected to the feed mechanism, and of a transporter. The coal cutter-loader is equipped with a base, an undercarriage with a drive, and mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face, this rotation mechanism is connected to the tool, to a case for accumulating coal core, and to an offtake telescopic chute for supplying core to the transporter. Also the feed mechanism is made in form of a carriage connected to a drive by means of a lead screw; the carriage is mounted on a bed plate, which rests on a base. Mechanisms of lengthwise and transverse travel of the rotation mechanism relative to face are made in form of lead screws with drives, to which correspondingly the rotation mechanism and the feed mechanism carriage are connected. The rotation mechanism is installed to travel along guides assembled on the carriage by means of the mechanism of lengthwise travel relative to face; the mechanism of lengthwise travel is installed in its turn on the carriage. The case for core accumulating connected to the tool has a rectangular opening and is equipped with a driven swivel gate. Notably, the movable part of the offtake telescopic chute for supplying core to the transporter is attached to the said case opposite the said opening; the fixed part of the chute is secured on the carriage by means of a bracket.

EFFECT: increased efficiency of coal cutter-loaders and improvement of work environment in coal mines.

4 dwg

FIELD: mining.

SUBSTANCE: grooving device for use with drilling rig for drilling multiple parallel crossing boreholes close to each other in such a way that the groove is formed in solid material as rock, stone mansonry or concrete. Grooving device includes guiding part connected to body part by at least one bracket. Guiding part is located in previous drilled borehole; and body part and impact-rotational instrument together form a changeable volume chamber that contains flushing liquid medium that absorbs the transmission of waves form impact stress of impact device to grooving device.

EFFECT: increase of device service life due to reduction of impact waves influence on body structure and guiding part of the device.

23 cl, 15 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: mining art, in particular, open-pit mining of mineral resources by high benches.

SUBSTANCE: large-diameter single holes are replaced by a pair of divergent holes of a smaller diameter, in which one hole is always vertical, and the other one is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent bundles of parallel converged holes, in which one bundle is vertical, and the other is inclined towards the bench; the single holes of the larger diameter are replaced with a pair of divergent holes of a smaller diameter, in which one hole is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters; the single holes of the larger diameter are replaced by a pair of divergent bundles of parallel converging holes, in which one bundle is vertical, and the other is inclined towards the bench and positioned in the vertical plane parallel with the first one and distant from it by 1-2 hole diameters.

EFFECT: enhanced efficiency of blasting of the benches.

7 cl, 6 dwg

FIELD: mining industry.

SUBSTANCE: method includes dividing quarry on rows, of which first one is extracted to planned depth with external dump-forming, and extraction of following rows is performed with use of internal dump-forming, placing dug rocks to extracted space of adjacent row with common displacement of dump front with development of mining operations. Second and following rows of quarry are divided on basis of height on extraction levels, extraction of uppermost level is performed with placement of dug rocks in upper dump level of extracted space of adjacent row, using surface transporting communication lines, and during extraction of second extractive level dumping of dump level of inner dump is primarily performed by forming pioneer dump at longitudinal processed edge of quarry, on upper area of which transporting lines are placed and dumping of dump level is performed from there, with descent of mining operations in working area of extractive level profile of upper dump area is altered to provided necessary cargo communications of working horizons of extractive level to dump level, after extraction of extractive level remaining pioneer dump is dug to upper mark of following extractive level, and extraction of following extractive levels is performed analogically, using reformed upper area of pioneer dump.

EFFECT: higher efficiency.

10 dwg

FIELD: mining industry.

SUBSTANCE: method includes cutting steps with varying angles. Angles of double step slopes, different on basis of quarry depth, are formed with consideration of decrease of irregularity parameters with deposit depth, with natural block level of upper horizons and influence from mass explosions and wind erosion of rocks with gradual increase of their steepness until forming of vertical slopes of double steps during additional operations in quarry, while angles of slopes and edge portions on upper horizons in highly fractured rocks may be 50-55°, in rocks of average and non-specific fracture levels - 70-60° and in low-fractured rocks may be 80-85°, and edge portions 60-90 m high in deep portion of quarry with vertical double steps and preventive berms 10 m have slant angle 80-85°.

EFFECT: higher efficiency.

6 dwg, 1 tbl, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes extraction of quarry to planned depth with use of quarry ore chutes with accumulating bunkers, cutting ore chutes with deepening of mining in quarry, crushing ore blocks and pieces from face from bunker walls by explosives, loading ore to railway vehicles, cutting and shutting upper portion of ore chutes at each level when mining approaches there is performed by division on beds and semi-shelves with charges in wells, providing for crushing of rock to needed dimensions and safety of mine walls, and further decrease of pieces size and increasing efficiency of ore chute operation by excluding ore suspension is achieved by use of crushing assembly in form of bowl with plate at base, working as anvil under layer of rock, from where ore mass is self-propelled to bunker, and from there by feeder is sent to crusher and further through intermediate conveyer to main conveyer.

EFFECT: higher efficiency.

4 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes extracting quarry to planned depth by ore and rocks extraction by displacement of shelves along horizons with transferring to crushing plants, crushing rocks and then delivering them by lifting device to the surface, during extraction of quarry to planned depth at first stage during construction of board at the end of quarry in zone of decrease of power of deposit in stable rocks conveyer rope system is constructed, connected to hoisting machine, to bed with recesses, allowing to raise crushed material to large height at steep angle and with deepening of mining and displacement of crushers to lower horizons conveyer system is extended to provide for optimal transport shoulder for gathering vehicles.

EFFECT: higher efficiency, higher productiveness.

2 cl, 6 dwg, 1 ex

FIELD: mining industry.

SUBSTANCE: method includes opening deposit of mineral resource along its length, extraction of opened rocks in shelves, forming on one of the portions of deposit of forward extracted space reaching planned bottom, moving rocks to external dumps and into extracted space, processing and transporting of mineral resource. Deposit extraction is performed in two directions - perpendicularly to length of deposit with deepening and along length to quarry bottom, while volume of extraction of mineral resource along length is increased and volume of extraction of resources perpendicularly to length is proportionally decreased.

EFFECT: higher efficiency.

2 cl, 3 dwg

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