Section of powered support of working face of thick bed with forced coal extraction |
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IPC classes for russian patent Section of powered support of working face of thick bed with forced coal extraction (RU 2513952):
 Method to prepare and mine reserves of minefields / 2513607
Method includes extraction of coal in a long working face by retraction, ventilation of the working face, control of mining pressure by damage of roof rocks in the mined space, collection of minefields in the lower points of the mine and supply of aqueous solution of antipyrogene into the mined space. Extraction pillars are mined in turns with reverse and forward strokes. In advance they erect a dismantling technical inspection and installation chambers coaxially. The longwall mechanised equipment set - LMES - is driven into the dismantling chamber without a thrust at the chamber roof. The elements of the set are moved in blocks by three from the dismantling chamber into the installation one, on the way they do routine maintenance as the blocks move in the technical inspection chamber, at the same time they use movement mechanisms of thrust-sliding-sliding type with autonomous power supply to each block. The mechanism of movement of thrust-sliding-sliding type they use the same sections of the LMES support and their interconnection via movement cylinders with the appropriate chute of the longwall face conveyor. For the period of dismantling they create n autonomous blocks of three with alternate movement of 3 sections of the support without thrust relative to 3 chutes that serve as a stiff beam.
 Powered support for steep beds / 2487244
Powered support comprises a support base, including bottomhole and goaf beams with fences and stands of the thrust connected to each other by means of tails from special profile, and linear sections, every of which has a beam, a shoe, a hardware compartment, and also elements of thrust, haulage and correction, at the same time the hardware compartment comprises two capsules with a hatch and an access man way, a process hatch and windows for supply of a laser or an ultrasonic device to the bottomhole, between themselves the capsules are fixed by locking devices and have manholes for communication.
 Construction method of mounting chamber for mechanised system / 2484252
Construction method of a mounting chamber for a mechanised system involves initial performance of a working-out of small width using a tunnelling machine, coal transportation using a conveyor as it is being performed; its further widening till design width and reinforcement of roof with short and long steel polymer anchors. When coal is being transported at performance of a working-out, a longwall conveyor is used and widening of the working-out is performed by means of a cutter-loader, by extracting coal strips from the working-out side to the full formation thickness throughout its length in the direction of the intended face advance, and reinforcement of roof above the first extracted coal strip is performed with long anchors installed in pairs, rows in mutually opposite directions; after that, extraction of strips and reinforcement of roof is performed in series with short anchors till the mounting chamber achieves design width.
 Powered support for steep beds / 2482277
Powered support comprises a support base, including a bottomhole and a goaf beams with barriers and spacer stands connected to each other with tails from a special profile, and linear sections, every of which has a beam, a shoe, an equipment compartment, and also elements of spacing, shifting and correction, at the same time the beam of the linear section is spaced with pneumatic cushions arranged on a convex shield, under which pneumatic stands are located, being rested against the shoe, to the body of which at both sides there are roller supports fixed as capable of movement in slots of the special profile of support base tails, on the shift and stabilisation unit there is a capsule of the equipment compartment, inside of which there is a manipulator with an extraction element of physical coal breaking. Each pneumatic stand comprises a polymer film pipe with stiffening ribs in the form of hoops, a sliding case, a beam, a shoe and a pedestal.
 Method to install powered support for longwall set of equipment / 2473807
Method is proposed to install a powered support for a longwall set of equipment, including arrangement of a mounting chamber of reduced width with a tunnelling combine, with provision of a niche on the upper joint of the mounting chamber, and cleaning of the mine soil. At the same time installation of the face conveyor and the shearer-loader is carried out prior to start of powered support installation, they are retained by means of hydraulic jacks fixed in the mine soil with an anchor fixture. If required, the soil is cut with coal loading onto a scraper conveyor of the tunnelling combine. Then the coal strip is excavated with the shearer-loader in separate stages with shearer-loader return after each stage towards the upper niche and erection of temporary and permanent powered support. Upon completion of chamber expansion, the shearer-loader is brought into the upper niche, and powered support sections are installed.
 Control method of poorly caving roof at entry of mechanised complex to removal chamber / 2472936
Before the face enters the formation roof, wells are drilled towards each other on the side of extraction gates, in pairs as to formation and parallel to the support line at the distance from the well projection to the bottom of formation to the nearest point of removal chamber, which is equal to 0.7-0.8 of periodic step of convergence of the main roof; they are charged and blasted after the support line, by means of which a support is created on the side of worked-out space for a hanging plate of the main roof throughout the length of face by using the roof rocks fallen during blasting operations. Coal pillar arranged between mechanised support and removal chamber is provided with artificial flexibility and extracted under protection of the plate of the main roof, which is borne against the rocks fallen during the well blasting operations. The specified artificial flexibility is provided for the pillar by drilling from removal chamber of wells at the formation roof towards the face.
 Powered support for steep beds / 2461714
Powered support comprises base supporting structure and linear supporting sections. Base supporting structure is divided into two base sections each of which consists of front wall with hydraulic props of stay brace and shanks. Each linear section consists of pneumatic cushions of stay brace with top part and support plate, which are fixed on movable supports attached to the capsule; at that, bottom of capsule has thickening in the form of a shoe. Movable support consists of two light-weight discs put through bearings on the axis, between which pressure plank with springs is located from above and transmits their forces to the same support axis through bearing located under it. Between capsule and support plate of linear section there is extension-type cap with hydraulic spin device inside which there is damping bed serving at the same time as extension element of linear section.
 Powered support for steep beds / 2452861
Powered support includes linear sections, bottom-hole enclosure and rock-dammed enclosure with hydraulic props of stay brace and correction jacks. At that, each linear section consists of hydraulic prop with capping and support plate, capsule of machine compartment, roller bearing and shoe. Roller bearing is made in the form of hollow metal ball arranged in cylindrical cavity of the shoe and hold-down stock with shock absorber through which the weight of unloaded section is transferred to the ball. At that, ball of roller bearing, hold-down stock and wall of cylindrical cavity of the shoe are covered with diamond film with friction coefficient of 0.05-0.001.
 Powered support for steep beds / 2447288
Powered support for steep beds includes basic stand and linear sections. The basic stand is divided into basic sections, every of which consists of front and goaf walls with pneumatic props of thrust and tail pieces connecting front and goaf walls by bed soil. Each linear section comprises a cap, a shoe, a thrust element in the form of a row of pneumatic props, a barrier element in the form of a capsule of a hardware unit, an extension element in the form of a pneumatic lift with a fixator lock, a flat frame with roller supports on shock absorbers, capable of displacement inside tailpieces of the basic section. The thrust element comprises a multi-chamber pneumatic cushion inserted into a concave cavity of the cap and acting as a flexible hinged joint, and a system of single-chamber pneumatic cushions installed underneath and separated with rigid thin discs into tiers, the bearing capacity of which increases in direction from the cap towards the support section base.
 Powered support section / 2439329
Powered support section comprises a fixed support, a spacer hydraulic jack hingedly connected to the support, a stem of the spacer hydraulic jack piston, hingedly connected to a supporting link, a connecting rod of a supporting link, a barrier link, a double-hinged and a triple-hinged links. The barrier link is made in the form of a barrier yoke, which with one of its hinged joints is inserted into a kinematic pair with a fixed support. The triple-hinged link is a triple-hinged connecting rod, the double-hinged link is a yoke of a triple-hinged connecting rod. The triple-hinged connecting rod is connected to a fixed support via a yoke of a triple-hinged connecting rod. The spacer hydraulic jack, the piston stem, the supporting link, the supporting link connecting rod, the triple-hinged connecting rod, the yoke of the triple-hinged connecting rod are connected into a five-link chain.
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FIELD: mining. SUBSTANCE: section of a powered support of a working face of a thick bed with forced coal extraction comprises a slab hingedly connected to a fence at its one side, a base hingedly connected to the fence at its other side, hydraulic props connected to the base and slab, advancing rams installed on the base. In the fence there is a rectangular opening that narrows in direction from the space behind the support to the working space of the support. At the same time the opening is closed with hydraulic jacks of cover control and is hingedly connected to the fence. In the cover in the space between hydraulic jacks of control there is a hole with the possibility of rotation in the vertical plane. Also in the cover there is a perforator, directed with an actuating element towards the opening. In the opening section there is a chute installed with vertically oriented boards and bottom. The chute is made of three metal sheets, installed in series along with the travel of transported material as overlapping each other. To the bottomhole edge of the first and second sheets there is a thick-walled scraper welded, which is oriented along the normal line to the plane of the following sheet. In the boards of the chute symmetrically to its axis, in parallel to the plane of the second sheet and below it there are slots, where fingers of the second sheet are inserted, being welded to it perpendicularly to the axis of the chute along the edges. At the bottom the second sheet is connected to the boards of the chute by means of a hydraulic jack of movement along the slots. At the same time the angle of inclination of the first sheet of the chute bottom to the horizon is more than in the second one, and in the second one - more than in the third one. EFFECT: higher efficiency of using a powered support in development of thick coal beds with controlled extraction of under-roof layer due to expansion of its capabilities and area of application by using a charging chute and equipment of the support with an element for breaking of bulk pieces. 5 dwg
The present invention relates to mining, in particular for the fastening of the stope, and for the design of mechanized roof supports, designed to maintain the working space in Stopes during the development of thick layers with a forced release of coal from the roof (interlayer) column. Well-known lining design stope powerful coal seam containing the base, pivotally connected with the railing with one hand and hydraulic rack with roof bar, overlay, hinge associated with the roof bar and the fence on the other side, and the dammed section of the conveyor. The fence has an opening for release of the destroyed coal from the roof (interlayer) strata on the dam pipeline, close from the working space by a barrier [1]. The disadvantages of this design are lining: the need dammed pipeline in the working space of the lining, the steep angle of the fence with a door leading to entrance destroyed coal from the roof (interlayer) thickness only at the expense of the tangential component of gravitational forces or rock pressure, no means for recovery when saucepan opening large piece of coal. Known design section of powered roof supports, adopted by the who as a prototype, containing the base, the hinge associated with him in the form of chetyrehzvennoy Chebyshev fence, overlay, hinge associated with fencing and two hydraulic rack connecting the overlap with the ground. In the interior section has a loading chute with a bottom associated with opening made in the fence, and a barrier made of telescopically installed plates, pivotally connected with the enclosure and is supplied with hydraulic rotation around a horizontal axis. To organize the loading of coal coming from the interlayer thickness through the opening in the fence on the downhole scraper conveyor loading chute is equipped with a feeder, made in the form of a rigid plate [2]. The disadvantages of this design are: when saucepan opening large piece of coal is missing some device that can destroy the oversized and restore throughput of the aperture, the relatively small area of the input aperture compared to the area of the fence, resulting in a relatively large part destroyed coal in to the doorway and remains in sakrana space, causing increased operating losses of coal in the bowels, - the design of the bottom of the trench in the form of a rigid plate, leads to an increased risk of sticking of wet coal mining is lajnah coals. These drawbacks reduce the effectiveness of the use of powered roof supports in the development of thick coal seams and scope, limiting its relatively dry coals. The aim of the invention is to increase the efficiency of powered roof supports in the development of thick coal seams with a controlled release of the underlay (interlayer) thickness by expanding its capabilities and applications by activating loading chutes and equipment supports organ destruction of large pieces. This objective is achieved in that section of powered roof supports stope powerful reservoir with forced release of coal containing overlapping, pivotally connected with the railing with one hand, a base pivotally connected with the railing on the other hand, the hydraulic jacks associated with the base and overlapping jacks shifting installed on the base, an aperture is made in the fence, a barrier, a hinge associated with the fence, equipped with a hydraulic Jack control barrier, and gutter with flanges installed in the doorway of the fences, on the bottom of the trench with a downhole side mounted plunger feeder, made in the form of a rigid plate, equipped with a hydraulic actuator, an opening in the fence made tapering in the direction from the closed the tion to the workspace lining, the barrier is made of the hole, which, with the possibility of rotation in a vertical plane, a hammer, Executive body directed towards the aperture, the bottom of the chute is made of three metal sheets arranged in series along the transported material overlap each other, to downhole edge of the first and second sheets of welded thick-walled scraper, oriented normal to the plane of the next sheet, the sides of the trench symmetrically to its axis parallel to the plane of the second sheet and below it made slits, into which are inserted the fingers of the second sheet, welded to it perpendicular to the trench axis along the edges, the bottom of the second sheet by hydraulic cylinder move along the slots associated with the sides of the trench, and the angle of inclination of the first sheet of the bottom of the trench to the horizon more than the second, and the second more than the third. The design section of powered roof supports is illustrated by diagrams. 1 shows a diagram of the layout section (side view); figure 2 - the second in the course of the coal transported sheet of the bottom of the trench; figure 3 is also a side view; figure 4 - Board of the gutter; figure 5 is a section along B-b specified in figure 1. Shield stope powerful reservoir with forced release of coal contains a base 1, a hinge associated with the enclosure 2 with one of its sides, which, in St. the first phase, on the other hand pivotally connected with an overlap of 3. The base 1 and the overlap of 3 interconnected hydraulic struts 4. The enclosure 2 has a through opening 5 of a rectangular shape, tapering in the direction from scranage to the workspace, i.e. the input section of the opening has a larger area than the output, the lining must provide for receipt in the aperture more destroyed coal from scranage space. From the side of the working space lining the fence 2 in alignment with the opening 5 is connected with the vertical flanges 6, mounted parallel to each other and forming a trough, the bottom of which is made of three metal sheets 7, 8 and 9 installed overlapped with each other, ranging from fencing. When the sheet 7 is set at an angle to the horizontal less than the angle of repose for a lump of coal, partially covers the sheet 8, which, in turn, is fitted at an even smaller angle to the horizon and partially covers slightly inclined sheet 9. The sheets 7 and 8 from the side of the stope is equipped with thick scraper 10 and 11, respectively, are welded approximately perpendicular to the cover sheet. The sheet 8 is the average of the sheet forming the bottom of the trench, the bottom thereto by welding or threaded connections are attached symmetrically at the four edges of the finger 12, inserted in pairs what's in the slots 13, performed in each of the flanges 6. The sheet 8 from the bottom to the hydraulic jacks 14 is connected with the flanges 6 of the gutter. The sheet 9 is also connected with the flanges 6 of the gutter by means of a hydraulic Jack 15, providing the opportunity to move in the direction of the stope. The upper edge of the fence 2 from the side of the working space of the hinge, can be rotated around a horizontal axis 16, is attached to the barrier 17, controlled hydraulic jacks 18. In the space between the jacks 18 in the shield 17 is made of the hole, which has the perforator 19, oriented Deplete the body side aperture 5 (around the middle). In a clearing face sections of the support are interconnected hydraulic jacks belt (not shown)mounted on the base and providing alternate shifting of the sections at the bottom. Shield section is as follows. Destroyed the coal from the upper strata of the reservoir by gravity through the opening 5 made in the enclosure 2, enters the chute. As the sheet 7 of the bottom of the trench is set at an angle to the horizontal less than the angle of repose for a lump of coal, the flow rate of the coal mass, coming from scranage space falls. Next, the coal mass continues on next page 8 the bottom, where even more retarded. Then on sheet 9 of the coal mass continuously, is moved in the AFC. When saucepan opening 5 large piece of coal movement of coal mass, the chute will stop. For the destruction of large piece jammed in the aperture 5, use the punch 19 is installed in the barrier 17. When turning on the drill shall nominate its peaks in the direction of the opening 5 in the enclosure 2 and the rotation of the barrier 17 in the direction of closing the opening 5. After the destruction of the large piece of coal mass flow will be resumed. When the extraction of coal with high humidity it is possible sticking of fine fractions of the coal mass on the bottom of the trench, which dramatically increases the coefficient of friction of moving bulk material on the bottom of the trench. As a result, the movement of the coal mass in the trough will stall. To exit from this situation, use mobile middle sheet 8 of the bottom of the trench. Jacks 14 perform the reciprocating movement of the sheet 8 in parallel to the slits 13, made in the sides 6 of the gutter. While the sheet 8 while moving to the side of his face scraper 11 clean sheet 9 and pushes the coal mass, and when moving from face - cleared himself from any presence of coal fines on the scraper 10, welded to the sheet 7. Thus, by increasing the sectional area of the opening made in the fence of shields, most of the coal from scranage space can be accessed through the opening in the outskirts of yuushi chute; - due to the installation of the hammer on the barrier there is a possibility of destruction of large pieces of coal to resume movement of the coal flow from scranage space on the AFC; due to the application of the active component of the transporting chute becomes possible to produce coal with high humidity. All of the above demonstrates the efficiency of the shields and extend the scope of its application, and this is the purpose of the invention. Sources of information 1. A.S. Saginov Duhsasana excavation of coal in thick flat seams./ Assasino, Sea - Alma-ATA: Nauka, 1982, p.75, 27 (similar). 2. KLISHIN Century. And. Development of thick layers mechanized roof supports with controlled release of coal./ V.i.klishin., Upfacing, Digitonin, Blubonic uulu. - Novosibirsk: Nauka, 2007, pp.86-88, 4.1, 4.2 (prototype). Shield stope powerful reservoir with forced release of coal containing overlapping, pivotally connected with the railing with one hand, a base pivotally connected with the railing on the other hand, the hydraulic jacks associated with the base and overlapping jacks shifting installed on the base, an aperture made in the fence, a barrier, a hinge associated with the fence, snapitdigital.com control barrier, and gutter with flanges installed in the doorway of the fences, on the bottom of the trench with a downhole side mounted plunger feeder, made in the form of a rigid plate, provided with a hydraulic drive, differentthe fact that the opening in the fence made tapering in the direction from scranage to the workspace lining, barrier made the hole, which can be rotated in a vertical plane, a hammer, Executive body directed towards the aperture, the bottom of the chute is made of three metal sheets arranged in series along the transported material overlap each other, to downhole edge of the first and second sheets of welded thick-walled scraper, oriented normal to the plane of the next sheet, the sides of the trench symmetrically to its axis parallel to the plane of the second sheet and below it made slits, into which are inserted the fingers of the second sheet, welded to it perpendicular to the trench axis along the edges, the bottom of the second sheet of the hydraulic cylinder moving along the slots associated with the sides of the trench, and the angle of inclination of the first sheet of the bottom of the trench to the horizon more than the second, and the second more than the third.
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