Dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports

 

(57) Abstract:

The invention relates to mining machines for underground mining, and in particular to mechanisms and devices of shock-shearing effects on the vertical plane of the front face under the guise of powered roof supports, and can be used in dynamic planes for the extraction of kimberlite ore under the guise of powered roof supports and other minerals strength up to 8 kN/see Technical problem - improving performance wedge tool with blades by cooling it with water and reduce energy costs in the destruction of kimberlite ore due to a hard blow with the simultaneous use of hydraulic fracturing. Dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports includes a housing with a mechanism for moving the sections of powered roof supports, devices for loading and transportation of kimberlite ore, rigidly fixed to the body at least two hydroshock site with drummers and wedge tools with blades. In the Central part of V-tools is cylindrical piston chamber with a piston, an anvil is of istue with the annular part of the anvil, executed at the end of the wedge tool. A cylindrical piston chamber V tools through a check valve connected to a common camera that is installed on the plow. Overall the camera is equipped with a compensator pressure drop and connected with a source of water supply. Blade wedge tool is divided into two parts. Center wedge tool between the parts of the blades are made illinoisi channel connected to the expanding cone with a cylindrical piston cavity wedge tool. 3 Il.

The invention relates to mining machines for underground mining, and in particular to mechanisms and devices of shock-shearing effects on the vertical plane of the front face under the guise of powered roof supports, and can be used in dynamic planes for the extraction of kimberlite ore under the guise of powered roof supports and other minerals strength up to 8 kN/see

For the Department of kimberlite ore strength from 3 to 8 kN/cm from the array, the application of the principle of cutting teeth of the cutters is irrational, because it is effective only when the strength of the rocks less than 2 kN/see

Most effective when the Department kimberlite field with the use of mechanized lining the length of the front face can reach 200 meters and more. Each tooth of the dynamic plane for one cycle of movement should be this distance. Under impact loading, studies show that teeth are heated to 300oand more, which reduces their resistance, increasing the cost of blasting rock. To reduce heating of water is used, which also contributes to the formation of cracks in them due to the combination of the processes of fracturing and hydraulic fracturing.

A device for the controlled destruction of the rocks (see and.with. The USSR 1786255, E 21 37/00, 37/12, BI 1, 1993), including a hydraulic cylinder with a check valve, a percussion piston and nozzles installed in podpornoy part of the cylinder and adjacent its lateral surface to the inner surface of cylinder for axial movement, and the piston portion of the hydraulic cylinder is made in longitudinal section of a hexagonal shape, and the nozzle is designed as two sliding cheeks with carbide tips, with cheeks are in longitudinal section the shape of an irregular quadrangle, forming the gnashing of the wedge facing the piston base and a triangular hole in it.

The destruction process continues, mainly under the influence of rhenium in the crack of the working fluid through the gap between the carbide tips, is the fracturing of rock. In this example, water has a cooling of the working tool and is involved in the destruction of the rocks.

The disadvantages of the known technical solutions are the complexity of manufacturing, low performance sliding cheeks, very energy intensive destruction due to the fact that it does not use energy hard hitting percussion piston. The destruction is mainly due to fracturing.

The closest in technical essence and the achieved effect is dynamic plane of powered roof supports for mining kimberlite ores (see RF patent 2120033, E 21 27/46, E 21 D 23/00, BI 28, 1998), in which the plow, having a mechanism for moving the sections of powered roof supports, devices for loading and transportation of the ore, is rigidly fixed to at least two hydroshock node with the energy of a single blow of not less than 1000 j with individual wedge tools, parallel interconnected with one common unit of hydroelectric power. Each hydroshock node has a built-in element incorporation in the work when 50-75% of the load from the bottom to Klinova the tool when moving mechanism moving the plow is an ode to movement of the plow, and the distance between the wedge instruments does not exceed three times the width of their blades.

A disadvantage of the known technical solution is a great blade wear wedge tool due to overheating, shocks, and a worn tool increases the energy consumption for crushing rock.

The technical object of the present invention is to improve the health of the wedge tool with blades by cooling it with water and reduce energy costs in the destruction of kimberlite ore due to a hard blow with the simultaneous use of hydraulic fracturing.

The problem is solved as follows.

In the dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports, comprising a housing with a mechanism for moving the sections of powered roof supports, devices for loading and transportation of kimberlite ore, rigidly fixed to the body at least two hydroshock site with drummers and wedge tools with blades, according to the technical solution in the Central part of V-tools is cylindrical piston chamber with a piston navalreactor with the annular part of the anvil, executed at the end of the wedge tool. A cylindrical piston chamber in wedge tools through a check valve connected to a common camera that is installed on the plow, equipped with a compensator pressure drop and connected to a source of water supply. Blade wedge tool is divided into two parts, and the center wedge tool between the parts of the blades are made illinoisi channel connected to the expanding cone with a cylindrical piston cavity wedge tool.

Significant differences of the proposed technical solutions are the following.

- In the Central part of V-tools is cylindrical piston chamber with a piston with an anvil, interacting with the Central part of the striker hydroshock site.

This solution will allow you to convert the impact energy of the striker hydroshock node to the water pressure in the cylindrical piston cavity. Research has shown that the pressure of the water may increase tenfold.

- Peripheral part of the striker communicates with the annular part of the anvil, made at the end of the wedge tool.

While a cylindrical piston chamber in wedge tools through a check valve connected to a common camera that is installed on the plow, equipped with a compensator differential pressure and connected to the water source.

The solution provides for the supply of water from an independent source of water under pressure (from the total of the camera) that allows adjustment of the process of hydraulic fracturing. Water is supplied from a source outside the body of the plane. Fracturing requires an increased consumption of water, which flows through the bottom hole in the waste area filled with lumpy bulk material.

Water transport horizon may be submitted directly to the plow, or water supply scheme may provide for the pump to increase the pressure before the water supply to the plow.

- Blade V-tool is divided into two parts, and the center wedge tool between parts letsibogo tool.

It provides water at the center of incipient cracks, which reduces water consumption and increases the efficiency of hydraulic fracturing. The diameter iklirous channel, as shown by studies, ranges from 0.5 to 3 mm

The essence of the technical solution is illustrated by the example of dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports and the drawings Fig.1-3.

In Fig. 1 is a schematic diagram of the dynamic plane and V-tools, vertical incision.

In Fig.2 - schematic diagram of wedge-type tool, vertical incision.

In Fig. 3 - scheme of education slabbing cracks in the pit at the base of the chip.

Dynamic plane for the extraction of kimberlite ore under the guise of powered roof supports includes a housing 1 (Fig.1), which rigidly, by bolting, fixed, for example, five hydroshock nodes 2 (one hydroshock node in Fig.1 is not shown). For Stripping the roof and floor of the plane can be equipped with additional hydroshock nodes 2 low power each (Fig.1 is not shown). Hydroshock nodes equipped with 2 maple tools 3 blade 4, is divided into two equal enemy 5 (Fig.2), which contribute to the formation of the embryonic fissure 6 by the concentration of the shock pulse.

To move the dynamic plane is equipped with a transfer mechanism (Fig.1 is not shown). Hydroshock nodes 2 connected in parallel between a common block of hydroelectric power (hydropower units power supply serially produced according to known technical solutions) (not shown in Fig.1).

Chipped chips 7 (Fig.3) a device for loading kimberlite ore, in the form of plow 8 (Fig.1), loaded on the conveyor 9 mechanized lining.

Dynamic plane can be made both one-way and two-way action.

In the Central part of each wedge tool 3 (Fig.2) is cylindrical piston chamber 10, in which is mounted a piston 11 with the anvil 12, interacting with the Central part 13 of the striker 14 hydroshock node 2. Peripheral part 15 of the striker 14 communicates with the annular part 16 of the anvil 12, made at the end of the wedge tool 3.

A cylindrical piston chamber 10 in each Klinova tool 3 through the check valve 17 is connected to the common chamber 18, is made on the housing 1 of tragoedia with a source of water supply under pressure. The blade is 4 V-tool 3 is divided into two parts, and the center wedge tool 3 is made illinoisi channel 21 connected to the expanding cone (position not defined) with a cylindrical piston cavity 10.

Dynamic plow works as follows.

Mining of kimberlite pipes is slightly inclined layers at a height of 1.8-2.5 m in length 50-25 m under the guise of powered roof supports.

The breaking of ore produce dynamic plane through V-tools 3 hydroshock nodes 2 to the full height of the layer (in the example - 2 m) in the form of chips 7 (Fig.3) thickness of 10-30 cm in front of the lava.

Drummer 14 hydroshock node 2 is applied to a simultaneous blow to the anvil 12 of the piston 11 and the annular part 16 on the end of the wedge of the tool 3. After a series of blows (and possibly after the first attack) curves 5 parts of the blades 4 is formed embryonic fissure 6. On subsequent beats within this embryonic fissure 6 under high pressure pulses of water from the cylindrical piston cavity 10 by means of the piston 11. The piston 11 converts part of the shock power hydroshock node 2 in the increased water pressure, which through the diffuser and illinoisi stays, leisure and entertainment channel 21 of the blade 4 and the hydraulic fracturing water in a pulsed mode.

Simultaneous exposure effectively forms a crack 6 under each of the blades 4 of V-tools 3 hydroshock nodes 2. Growth of the embryonic fissure 6 related help growing cracks from neighboring hydroshock nodes 2. The result is a slabbing crack (Fig.3 not shown) and separate chip, and falling to pieces because of the natural fractures.

At the same time, the water contributes to the cooling of the wedge tool 3, ensuring its durability.

To improve the efficiency of water into a common chamber 18 is supplied under pressure through the pipeline 20 from an external water pump (Fig.2 is not shown). Technical solution provides for multiple use of water, which the water after filtration through granular material in the used space is going to transport the horizon and a pump pit, equipped mechanized lining. To compensate for the pressure drop total camera 18 is equipped with a compensator 19. The supply of water to all hydroshock node 2 from the common chamber 18 increases the stability of the dynamic plane.

Dynamic plane for the extraction of kimberlite ore under the guise of mekhanizirovn the conditions and transportation of kimberlite ore, rigidly fixed to the body at least two hydroshock site with drummers and wedge tools with blades, characterized in that the Central part of V-tools is cylindrical piston chamber with a piston with an anvil, interacting with the Central part of the striker hydroshock node, and peripheral part of the striker communicates with the annular part of the anvil, made at the end of the wedge tool, with a cylindrical piston chamber in wedge tools through a check valve connected to a common camera that is installed on the plow, equipped with a compensator pressure drop and connected to a source of water supply, moreover, the blade wedge tool is divided into two parts, and the center wedge tool between the parts of the blades are made illinoisi channel connected to the expanding cone with a cylindrical piston cavity wedge tool.

 

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FIELD: mining.

SUBSTANCE: method for coal extraction using dynamic plough involves cutting of deep advance slots in formation mass at the roof, soil and middle, working face, and further destruction of mass in two consoles weakened with slots are performed by shearing; at that, width of cut slot and cutting depth of consoles is set and adjusted along the strike due to turning angle relative to working face of actuator with cutting tool the cutters of which describe ellipsis trajectory, and shearing force is created due to external taper surface of actuator housing when the plough is being moved along the working face.

EFFECT: improvement of coal extraction controllability on coal formations with complex structure; increase in depth of removed chips.

FIELD: mining industry.

SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.

EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

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EFFECT: higher efficiency, effectiveness, broader functional capabilities.

8 cl, 5 dwg

FIELD: mining industry.

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EFFECT: broader functional capabilities.

7 dwg

FIELD: mining industry.

SUBSTANCE: section has ceiling with extending shield, base and two supporting beams (upper and lower) with drilling bodies, mounted in parallel to each other and connected to hydraulic posts, mounted perpendicularly to them and to bed, upper and lower fence elements and hydraulic displacement jacks. Fence elements are interconnected with possible angular displacements by transverse beam and mounted at sharp angle to each other, in inner space of which hydraulic posts are mounted. Their rods are jointly connected to upper fence element, and cylinders - to lower one. Each support beam is mounted lower than appropriate hydraulic post along line of bed fall, and connected to it at a tangent, along beam axis with possible free displacements, along fall line - rigidly, and along perpendicular to bed - with possible limited relative displacements. Dump end of support beam by means of traction is jointly connected to transverse beam. Displacement jack is by one end jointly connected to outer side surface of lower support beam, and by other one - to transverse beam of adjacent support section, mounted lower along bed fall.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

SUBSTANCE: support has two rows of pneumatic tank sections, in each of which even-numbered tanks are connected to dump base beam, and odd-numbered - to face base beam. beams are connected to holding device and displacement gear, made of two longitudinal guiding beams, connected by bars between each other through shoes with face and dump base beams with possible displacement along the latter via closed chain with drive. Base beams of the same name are interconnected via tractions jointly fixed thereto. Longitudinal guides of a beam are placed above inner face and dump base beams and are additionally interconnected via coupling screw and nuts, made at same end with right-hand thread, and at the other end - with left-hand thread. Coupling screw is connected to rectangular bars via additional beam rigidly connected to it. Shoes are made with bearings, in which ends of rectangular bars are placed. All face and dump beams by their upper ends are connected to holding device through carriages, on one of which a drive is fixed, with sprocket of closed chain, connected to one end of console traction, other end of which is jointly fixed at upper end of additional beam.

EFFECT: higher efficiency.

9 dwg

FIELD: mining industry.

SUBSTANCE: complex has mechanized support, combine with conveyer working tool, mounted on its boom, pump station, cable placing device and electric equipment. Support has supporting ceiling, mounted via hydraulic posts, protective ceiling, connected to base via hydraulic posts, hydraulic displacement jacks and extending top of supporting ceiling. Complex is provided with elastic shield, and mechanized support - by second base. Base and protective ceiling form a protective portion of mechanized support, and second base with supporting ceiling - its supporting portion. Base and second base are interconnected by displacement hydraulic jacks with possible forming of technological space for extraction of ore from supporting blocks of trench. Elastic shield above technological space is supported by extending top of supporting ceiling, protective ceiling is mounted under sharp angle to base for smooth setting of elastic shield. At the end of combine boom a carriage is moveably mounted, whereon second conveyer working tool is mounted. Both conveyer working tools are mounted at opposite ends of carriage with possible extraction of ore from support blocks on both sides of trench.

EFFECT: higher safety.

2 dwg

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