Artificial support for use when extracting steep beds

FIELD: mining industry.

SUBSTANCE: device has surface composed of upper section with wedges and lower section and backfill material placed on said surface. Upper section is made in form of a rectangle, composed of rectangular triangle and rectangular trapezoid with possible displacement of trapezoid along triangle hypotenuse. Lower section is made of two plates, mounted on holder, fixed to pipe for feeding compressed air. Plate, positioned above the trapezoid, is mounted with possible counter-clockwise rotation around holder. Value of greater base of trapezoid hδ is selected from relation hδ = m - 0.9k, where m - bed massiveness, m, k - size of backfill material, m.

EFFECT: simplified construction, lower laboriousness.

2 dwg

 

The invention relates to the field of mining and can be used to control the roof during the mining of steep seams.

A device for lining installation in Stopes, including mounting the rope and the connection node of the rope with a block lining, and the connection node is made in the form housed in the through holes of the supports with free rotation on the ends of the mounting and dismantling of the tubes, composed of segments and interact with lugs attached to the rope along its length, A.S. 1211417, M CL. E 21 D 23/00 1986 BI No. 6.

However, the connection node of the fence with rope unreliable under high loads from the base support and additional prigruzki from the backfill material, the design is complicated and requires more labor to install especially when the slope of a line stope to the line of strike of the formation.

Known artificial support, taken as a prototype, including flooring and backfill material laid on him, when this bearing is equipped with two locking units, each of which is made in the form of a guide sleeve with a slot along the entire length, rigidly attached to the clamp cone, several pairs of hinged levers, one end of which is fixed directly to napravlyaushaya sleeve, and the other on the slide, moving the sleeve with an emphasis through the washer, and flooring you olne of the two wedge-bases - fixed lower variable height and the top placed so that they can move relative to the bottom, through which located at the bottom on the edges of the holes missed two ropes, and the diameter of the hole of the base greater than the exterior diameter of the RAM and less than the outer diameter of the washers and the holes of the base from the side opposite to the installation of the fixing unit, performed with a chamfer; patent 2147687 from 23.10.98.

However, the design of artificial support is quite complex and requires more labor for its construction

The technical result of the present invention is to simplify the design and reduce labor costs for its construction

The technical result is achieved by the fact that artificial support, including flooring from the top with wedges and lower sections and backfill material laid on him, according to the invention differs in that the upper section is made in the form of a rectangle composed of a rectangular triangle and rectangular trapezoid, with the ability to move the line along the hypotenuse of the triangle, and the bottom section is made of two plates mounted on a bracket attached to the pipe for compressed air, and plate, located under the line, installed with the possibility of rotation relative to the bracket against the clock the second arrow, the magnitude of the larger base of the trapezoid hδ choose from the relation:

hδ=m to 0.9 k, m,

where m is the reservoir thickness, m;

k - value lumpy backfill material, m

The invention is illustrated by drawings, where Fig 1 shows the artificial bearing side (from the side of the stope.), figure 2 shows the artificial support from below.

Artificial bearing includes a lower section consisting of a plate 1, pivotally mounted on the bracket 2, is rigidly fixed on the metal pipe 3 for supplying compressed air to the air bellows 4, plate 5, is rigidly attached to the bracket 2, a flexible tape 6 is attached to the bracket (made of rubberized tape belt conveyor). The upper section of the support consisting of a rectangular triangle 7, and a rectangular line 8 is loaded backfill material 9.

Working artificial supports are as follows: plate 1 is installed parallel to the stretch layer and stack the bottom of the rectangular line 8, and line 8 and the plate 5 attached to the bracket 2, the base of a right triangle 7. Trapezoid have 8 so that its larger base was on the opposite side from the plate 1, while the value of the larger base of the trapezoid hδ choose from ACCOR is osenia:

hδ=m to 0.9 k, m,

where m is the reservoir thickness, m;

k - value lumpy backfill material, m

Then on a higher base-line 8 serves backfill material 9. Flexible tape 6 prevents the spilling of the backfill material on the metal pipe 3 and the air bellows 4. Deploy the plate 1 counterclockwise relative to the bracket 2 and pressed against the metal pipe 3. Line 8 under the action of its own weight and the weight of the backfill material 9 will move along the hypotenuse of a right triangle is 7, while the upper section is composed of a rectangular trapezium and rectangular triangle, reclinata between the roof and the ground layer, holding the filling material 9 from sliding down the dip of the seam, thus forming an artificial support for the control roof faces steep seams.

These supports are created along the length of the lava steep coal seams, which will take upon itself the pressure of the overlying rocks.

Thus, the proposed device will allow to simplify the design of artificial support and reduce the complexity in its construction.

Artificial support, including flooring from the top with wedges and lower sections and backfill material laid on it, characterized in that the upper section is made in the form of a rectangle composed of samogonnogo triangle and rectangular trapezoid, with the ability to move the line along the hypotenuse of the triangle and the bottom section is made of two plates, mounted on a bracket attached to the pipe for compressed air, and plate, located under the line, installed with the possibility of rotation relative to the bracket counterclockwise, while the value of the larger base of the trapezoid hδchoose from the relationship

where m is the reservoir thickness, m;

k - value lumpy backfill material, m



 

Same patents:

FIELD: mining industry.

SUBSTANCE: method includes preparation and well extraction of resources of chambers with partial backfill of extraction space. Blocks of upper level relatively to blocks of lower level are placed in staggered order, while blocks are made in form of a stretched upwards hexahedron. Resources of block within one hexahedron are separated on two chambers, one of which, placed along periphery of hexahedron, after extraction and removal of ore from it is filled by hardening backfill. Second order chamber is made of hexahedron-like shape, extracted and removed under protection from artificial block on all six sides of this chamber. Removal of ore from first order chambers is performed through one removal mine - end of level ort and cross-cut in lower portion of block and intermediate sub-level cross-cuts.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

2 dwg

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FIELD: mining industry.

SUBSTANCE: method includes erection of rows of main platforms along bed length in staggered order with length equal or divisible by step value for support displacement, and placing filling material thereon. Along length of main platforms between ceiling and bed soil post support is mounted, upon which filling material is fed. After that between main platforms additional platforms are erected with wedge supporting, and main platforms are rotated counter-clockwise towards pneumatic support and it is displaced for one drive step. During that filling material, while lowering, unwedges wedge support between ceiling and bed soil and forms artificial supports. After that additional platforms are rotated counter-clockwise towards pneumatic support. After movement of cleaning face for two drive steps operations for constructing artificial supports are repeated. Distance between main platforms along bed fall line are selected from mathematical expression.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes preparation and well extraction of resources of chambers with partial backfill of extraction space. Blocks of upper level relatively to blocks of lower level are placed in staggered order, while blocks are made in form of a stretched upwards hexahedron. Resources of block within one hexahedron are separated on two chambers, one of which, placed along periphery of hexahedron, after extraction and removal of ore from it is filled by hardening backfill. Second order chamber is made of hexahedron-like shape, extracted and removed under protection from artificial block on all six sides of this chamber. Removal of ore from first order chambers is performed through one removal mine - end of level ort and cross-cut in lower portion of block and intermediate sub-level cross-cuts.

EFFECT: higher efficiency.

2 dwg

FIELD: mining industry.

SUBSTANCE: device has surface composed of upper section with wedges and lower section and backfill material placed on said surface. Upper section is made in form of a rectangle, composed of rectangular triangle and rectangular trapezoid with possible displacement of trapezoid along triangle hypotenuse. Lower section is made of two plates, mounted on holder, fixed to pipe for feeding compressed air. Plate, positioned above the trapezoid, is mounted with possible counter-clockwise rotation around holder. Value of greater base of trapezoid hδ is selected from relation hδ = m - 0.9k, where m - bed massiveness, m, k - size of backfill material, m.

EFFECT: simplified construction, lower laboriousness.

2 dwg

FIELD: mining and underground building, particularly underground mining.

SUBSTANCE: method involves double-stage mineral deposit development; erecting artificial rock-and-concrete supports of previously cut primary chamber roof rock in at least two adjacent primary chambers; extracting secondary chamber resources; filling space defined by cut rock with hardening material mix. Mines for drilling and/or filling operations performing are arranged in deposit roof over or inside ore pillars of secondary chambers. Primary chamber roof rock is cut by well undercharge method. Hardening material mix is supplied via cross headings located between mine and cavities and/or via undercharged well sections remained after rock cutting operation.

EFFECT: increased safety and economical efficiency due to reduced number of drilling and filling mines or accompanying mineral excavation, possibility to use drilling and filling mines at secondary chamber development stage for ore cutting, venting and roof condition control.

5 cl, 3 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry and can be implemented at underground development of steep pitched deposits represented with unstable ore, under thickness of water-flooded sediments, excavation of which is connected with hazard of underground water inrush into mine workings. The procedure of development of thick steep pitched ore bodies consists in division of ore body into layers mined in descending order, in mining layers with cuts and in filling mined space with a solidifying material. Sections of location of cavities above filled massif and sizes of these cavities are determined by visual or instrument survey from cuts mined adjoined to the filled massif. Solidifying materials are supplied to places of after-filling in adjoined cuts using, for example a concrete pump equipped with the system of control over filling mixture supply. Cavities are after-filled in a divergent order in the direction off their boundaries, from uttermost adjoined cuts to adjoined cuts.

EFFECT: increased completeness of filling mined space, decreased space of mining auxiliary entries and increased safety of mining at development of deposits.

4 dwg

FIELD: mining.

SUBSTANCE: invention refers to mining industry, and namely to the method used for hydraulic filling of long single mine workings. It involves influence of retaining and filtering connection straps, installation of pulp pipeline, and supply of filling pulp. Water is drained via drain holes made in connection straps installed on the side opposite to the pulp supply. Filling pulp is supplied to the filled area via pulp pipeline with the holes made in lower part, which is attached to the roof of mine working throughout its length. The holes made at the beginning of the pipeline are equipped with petal valves.

EFFECT: increases the filling degree of the worked-out area in hard-to-reach sections.

2 cl, 2 dwg

Goaf stowing method // 2393355

FIELD: mining.

SUBSTANCE: method of goaf stowing during underground development of steeply dipping thick ore bodies involves bottom-upward excavation of inclined ore streaks 5 in horizontal layers up to 8 m wide with the inclination angle equal to angle of dip of ore body starting from the hanging side towards the lying side, ore breaking to the mine goaf of the bed, loading of the broken ore from the mine goaf, installation of insulating bulkheads on the bed flanks and filling of the mine goaf with hydraulic stowing mixture 2. Before the mine goaf is filled with hydraulic stowing mixture 2, there built near exposed surface of the adjacent inclined ore streak 6 is concrete retaining wall 1 with the thickness taken depending on the bed width and the specified strength of wall 1. After the rest part of the mine goaf is filled with hydraulic stowing mixture 2 and water is filtered, injection of hardening - cement-and-sand solution is performed to its upper part to the depth of 100…300 mm for movement of self-propelled machines along the filling surface 4.

EFFECT: invention will allow decreasing the flow rate of hardening stowing mixture owing to the construction of concrete retaining wall and reducing the prime cost of the mine production.

2 dwg

FIELD: mining.

SUBSTANCE: shaft pneumatic bridging comprises pneumatic shell, suspension unit, protective jacket, manometric and air-supply hoses, device for filling, control of excessive air pressure and its ejection, mount cord. At the same time pneumatic shell is arranged in the form of soft axisymmetric toroidal shell of rectangular section, inside of which there is sleeve arranged, and along its axis there is pipe mounted in with diametre that is less compared to sleeve. Besides pneumatic shell is separated into two equal parts by means of perforated web, upper end and its side surfaces are coated by loose-fitting meshy web with lap towards working zone of rise heading, upper end is made of synthetic high-module fibre of high strength.

EFFECT: improved operational reliability of shaft pneumatic bridging.

4 dwg

FIELD: mining.

SUBSTANCE: method includes supplying pulp under excessive pressure via a safety device. The safety device is arranged as a tee, one end of which is connected to a bottomhole pulp line, the second one - to a sealer, and a safety membrane is installed on the third one. At the same time the output of wells in the backfilled chamber is arranged near its roof.

EFFECT: higher extent of chambers filling with a backfilling material with reduction of labour costs.

2 cl, 7 dwg

FIELD: mining.

SUBSTANCE: flushing pulp is delivered in stages forming several layers between which drain pipes are installed using leakproof hose parallel to longitudinal axis of flushed space. Drain pipes are attached by one end to leakproof hose. Each drain pipe is extended till it reaches opposite dam, then the housing is detached from drain pipe through the opening in filter dam and is removed for further use. When installation of project quantity of drain pipes is completed, process of flushing pulp delivery is resumed.

EFFECT: improving efficiency of flushing works due to reduction of flushing pulp runoff period.

1 dwg

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