Method to develop edge ore bodies with unstable ores
SUBSTANCE: invention relates to mining industry and may be used in development of thick edge ore bodies with unstable and precious ores, for instance, kimberlite pipes, by the underground method. The method includes formation of man-made massif with tunnelling and filling of stopes at the cut and undercut layer, descending extraction of reserves under the man-made massif and filling of the mined space. Under the man-made massif they form a transition layer-sublevel by alternate tunnelling of the stopes of the first phase, with height equal to the height of the layer, and stopes of the second phase, the height of which is equal to the height of the layer-sublevel, at the same time the stopes of the first phase is given the shape of the tilted trapezoid in the vertical cross section, and stopes of the second phase - the irregular hexagon, besides, the width of the upper bases of figures of these stopes and width of stopes of the above (undercut) layer are accepted with equal value. Reserves of the deposit below the transition layer-sublevel are mined by chambers in staggered order with a shift to a sublevel. Chambers in the cross section are given the shape of the hexahedron extended along the vertical line. The upper part of the chambers is formed in the form of a trapezoid with size of half of chamber height, the contours of the upper base of which match the contours of the base of the filled stopes of the first phase in the transition layer - sublevel, and contours of the lateral upper sides - with contours of the lower sides of the filled adjacent stopes of the second phase. The lower part of the chamber with the size of half of its height is given the shape of the tilted trapezoid in the vertical cross section.
EFFECT: invention makes it possible to increase intensity of mining of ore deposits, to increase size of an extraction unit and to reduce costs for filling works.
5 cl, 2 dwg
The invention relates to the mining industry and can be used in the development of underground powerful steeply dipping ore bodies with fragile and valuable ores, such as kimberlite pipes.
There is a method of kimberlite pipes under elastic panels, including the division of the ore body on the floor, and the floors of the blocks, the sinking of the ventilation-way roadways and ore chutes, the elastic mounting of the shields and mechanized complexes in blocks, the extraction of ore in units of horizontal layers with the use of combine harvesters, transport ore conveyors under elastic panels (Patent RF №2242611, CL IS 41/22, 2003).
The disadvantage of this method is the large intensity of the elastic mounting of the shield, mounting and remounting at the transition to the underlying layer of the mechanized complex. Furthermore, the presence of the collapsed array of overlapping species on the elastic shield eliminates parallel mining of ores other floors (panels), which dramatically reduces the performance of the mine in General.
Also known how to develop powerful steeply dipping ore bodies, including the blasting of the ore body from top to bottom blocks rhomboidal shape shifting them relative to each other by half of the floor, the mined-out space (RF Patent 2093678, CL IS 41/22, 1997).
To the disadvantage of ways is as follows: the difficulty in forming the upper part of the frame shape; the acute angle in the design of the upper part of the block is invariably hub considerable stress, and the development of transport and drilling excavations in unstable ores will require a high cost of their support and maintenance.
Closest to the proposed invention the technical essence is a way of development of ore deposits, including the penetration grade of the parallel faces of the first stage and between the driving faces of the second phase with the displacement of the soil above the soil benches of the first stage, the formation of an artificial roof of the mined-out space benches, excavation of minerals under artificial roof and the mined-out space (A.S. USSR №1346793, CL IS 41/06, 1987).
The main disadvantage of this method is the formation of the roof of the cameras in filling array of stepped form, due to the different heights of the soil benches first and second stage. When the blasting chamber ore reserves is chipping in the camera tab from soil benches second phase, which leads to the dilution of ore backfill material. When developing a powerful fields of this technology for each subsequent floor it is necessary to generate synthetic roof laid down by the benches, which is time consuming and leads to a decrease in the intensity of otrb the TCI as a whole.
Technical problem on which the invention is directed, is to increase the intensity of ore deposits, by increasing the size of excavation units and reduce the costs of backfilling operations.
This result is achieved in that in the method of developing a powerful steeply dipping ore bodies with unstable ores, including the formation of artificial array-excavation and laying of the benches on split and podrastet layer, a downward cut stock under artificial array and the mined-out space under artificial array form a transition layer-substage by alternately sinking benches of the first stage of a height equal to the height of the layer, and benches of the second stage, the height of which is equal to the height of the layer-substage, and the benches of the first stage of give in the vertical sectional shape of an inverted trapezoid, and the benches of the second phase of a hexagon, and the width of the upper base these figures benches and width of benches overlying (podrostkovo) layer take equal values, then the reserves below the transition layer-substage work out the cameras in a checkerboard pattern with offset on the substage, in cross section which give the appearance of a hexagon, extended vertically, with the upper part of the chambers form is in the form of a trapezoid with dimensions half the height of the camera, the contours of the upper base of which coincide with the contours of the ground faces of the first stage in the transition layer substage, and the contours of the lateral upper sides with the contours of the bottom sides laid adjacent faces of the second stage, the lower part of the chamber, the size of half of its height and attach to the vertical sectional shape of an inverted trapezoid. The drilling benches second stage layer-substage made from benches podrostkovo layer, using them as drilling production. After testing of ore reserves in the second section turns its tab carried out simultaneously used as drilling production section podrostkovo layer. The upper half of the cameras work under filling the array, and the lower - grade ore, and the angles of inclination of the lateral walls of the upper half of the camera of the backfill material and the side walls of the ore, the lower half of the camera, have equal values. Treatment chamber after testing is not less than 2/3 of their height lay hardening the mixture.
Non-pledged portion of the treatment chamber is used for the implementation of ventilation in the development of adjacent treatment chambers.
The invention is illustrated by drawings, where
figure 1 - shows the projection on the vertical plane of the circuit testing layers, benches and cameras, longitudinal section;
figure 2 shows the l the hydrated section along the line A-A.
On the drawing (Fig. 1 and 2) depicts the floors and zagadki split layer - 1; Zachodni podrostkovo layer - 2; Zachodni the first stage of the transition layer-substage - 3; Zachodni the second stage of the transition layer-substage - 4; fans down-hole - 5; drilling generation (Zachodni podrostkovo layer - 2) - 6; repulsed ore - 7; self-propelled machine with remote control - 8; camera hexagonal shapes - 9; drilling generation, passed in the roof of the chamber 10.
The inventive method is carried out as follows.
Throughout the area of the ore deposits create an artificial array of backfill material through bookmarks benches split layer 1 and podrostkovo 2. Under artificial array form a transition layer-substage by alternately sinking benches of the first stage 3 of a height equal to the height of the layer, and benches of the second stage 4 of a height equal to the height of the transition layer of the substage. Testing and bookmark benches of the first stage 3 are laid under the benches podrostkovo layer 2 full cross-section having the shape of an inverted trapezoid. Then work out Zachodni second stage 4, the cross section of which is presented in the form of a hexagon. The breaking of ore carried out by the fans down-hole 5. As drilling openings 6 for blasting of ore in the approaches of the second phase of the transition layer of the substage use Zachodni p is disretnogo layer 2, located in the roof of the benches of the second stage 4 transition layer - substage, which for this purpose shall retain the non-pledged. Repulsed ore 7 with soil removed self-propelled vehicles with remote control 8, and after full testing of each Zachodni second stage 4 put it together with drilling production 6.
As the formation of the transition layer - substage pass to the improvement of the basic inventory deposits. Mining of ore in the floor exercise cameras hexagonal form 9 in a checkerboard pattern with offset on the substage. Training and testing chambers 9 are similar to the benches of the second stage 4, only the breaking of ore carried out by the fans down-hole - 5, oboronnyi of production drilling, completed in the roof of the camera 10. Mining top-down. Sewage treatment works in the chambers 9 floors lead behind two chambers on the lower floor, as shown in figure 1. The upper part of the chambers 9 formed in the form of a trapezoid, the contours of the upper base of which coincide with the contours of the bottoms laid benches of the first stage 3 in the transition layer substage, and the contours of the sides (walls) with two paths laid adjacent faces of the second stage 4. Keystone (close to the arched shape of the upper part of the camera 9 is the most stable form of manifestation of high rock pressure. The side walls of the lower part Kamer, located in the ore array, perform inclined towards the bottom than eliminate peeling and the wood thrown in her treatment of space. After working chamber 9 lay hardening bookmark not less than 2/3 of their height. Non-pledged portion of the treatment chamber 9 is used to implement the ventilation in the development of adjacent treatment chambers.
The application of the proposed method of mining steeply dipping ore bodies with unstable valuable ores allows you to increase the intensity of mining at the expense of increasing the size of the excavation units and to reduce the cost of backfilling operations.
In addition, the proposed method of forming a transition layer - substage provides a safe transition from layer extraction unstable valuable ores chamber to a development system with the use of self-propelled equipment of higher capacity. The formation of the upper part of the chambers in the form of a trapezoid attached to the roof of the camera steady, which has a positive effect on the security maintenance of the treatment works. Practicing cameras hexagonal shape in a checkerboard pattern with offset on the substage allows you to bookmark cameras hardening the mixture to 2/3 of their height, thereby reducing the cost of stowing up to 20-25%. The use of non-pledged portion of the treatment chamber for ventilation in the development of the neighbouring sewage treatment Kama is, reduces the volume of mining operations.
Only the application of the proposed method when designing underground kimberlite ore Yakutia will allow a 1.5 fold increase production efficiency and 20-25% reduction in the cost of backfilling operations.
1. Method development steeply dipping ore bodies with neustoichivii ores, including the formation of artificial array-excavation and laying of the benches on split and podrastet layer, a downward cut stock under artificial array and the mined-out space, characterized in that the artificial array form a transition layer-substage by alternately sinking benches of the first stage of a height equal to the height of the layer, and benches of the second stage, the height of which is equal to the height of the layer-substage, and the benches of the first stage of give in the vertical sectional shape of an inverted trapezoid, and the benches of the second phase of a hexagon, and the width of the upper base shapes of these benches and the width of the benches overlying podrostkovo layer take equal values, then the reserves below the transition layer-substage work out the cameras in a checkerboard pattern with offset on the substage, in cross section which give the appearance of a hexagon, extended vertically, with the upper part of the chambers formed in the form of a ladder is the size of half the height of the camera, the contours of the upper base of which coincide with the contours of the ground faces of the first stage in the transition layer substage, and the contours of the lateral upper sides with the contours of the bottom sides laid adjacent faces of the second stage, the lower part of the chamber, the size of half of its height gives the vertical sectional shape of an inverted trapezoid.
2. The method according to claim 1, characterized in that the drilling benches second stage layer-substage made from benches podrostkovo layer, using them as drilling output.
3. The method according to claim 1, characterized in that after the development of the reserves of ore in the second section turns its tab carried out simultaneously used as drilling production section podrostkovo layer.
4. The method according to claim 1, characterized in that the upper half of the cameras work under filling the array, and the lower - grade ore, and the angles of inclination of the lateral walls of the upper half of the camera of the backfill material and the side walls of the ore, the lower half of the camera, have equal values.
5. The method according to claim 1, characterized in that the treatment chamber after testing is not less than 2/3 of their height lay hardening mixture.
SUBSTANCE: invention refers to mining, and namely to production of useful minerals by an underground block leaching method. The underground block leaching method of useful minerals involves driving at the block bottom of openings of drain horizon for collection of productive solutions, crushing and shrinkage of ore so that a drain horizon of a safety pillar is left above openings, drilling of upward pumping wells from openings of drain horizon through the safety pillar, supply through them of a leaching solution to shrunken ore, collection of productive solutions in openings of drain horizon. Upward pumping wells from openings of drain horizon through the safety pillar are drilled to lower boundary of shrunken ore, and the leaching solution mixed with air is supplied to shrunken ore via upward pumping wells in a hydrodynamic cavitation mode.
EFFECT: invention allows increasing extraction degree of useful minerals from ores, shortening leaching duration and reducing flow of leaching reagents.
3 cl, 2 dwg
SUBSTANCE: transportation of mineral deposit crushed with a combine is performed by means of a self-propelled wagon to a self-moving snaking conveyer, the loading part of which is located in a chamber, and the unloading part is located above an ore-passing well, via which the mineral deposit is transported and unloaded to the ore-passing well; with that, movement of the conveyor to the next well is performed when transportation length of mineral deposit with the self-propelled wagon in the chamber achieves maximum length determined as per mathematical expression. Limit length of the chamber, at which continuous operation of the combine is provided by means of a hopper-loading elevator, the self-propelled wagon and the self-moving snaking conveyor, is calculated as per the mathematical expression.
EFFECT: improving working capacity of a combine complex.
2 cl, 4 dwg
SUBSTANCE: method to prepare ore bodies to leaching of useful components in place of bedding includes installation of charges into well rings (11) in the central part of the ore body, explosion of the specified well rings and subsequent injection of a process solution into the central part of the ore body via perforation channels with the branching cracks along periphery of channels, formed by the upper part of the ore body with directed blasting Charges are installed with formation of a water circular gap between an explosive charge, bottom and walls of the well, after formation of a circular gap the well is filled with water or plugged.
EFFECT: invention makes it possible to increase opening of wells and evenness of distribution of a leaching solution in the ore body volume.
2 cl, 3 dwg
SUBSTANCE: for realisation of the method, drainage-degassing wells are drilled in zones of higher cracking outside the limits of the prepared mine. Wells are drilled in the bottom-up direction in the close proximity to the profile of the prepared mine. Pumping of gas saturated drainage brines is carried out until the level of the depression curve is set below the horizon of breaking works, and it is maintained at this level for the entire period of mining. Besides, in process of wells drilling the minimum permissible distance to the profile of the prepared mine is accepted as 0.035 m per each running metre of the well.
EFFECT: method makes it possible to increase safety of underground mining works due to reduce amount of arriving fuel gas and natural waters to mines from deep and deposit-adjacent horizons of earth interior.
2 cl, 2 dwg
SUBSTANCE: method includes the following stages. Installation of a structure inside or tightly with an underground mine, so that the structure provides for reactive forces when pushing a cutting head in direction of the material by means of a series of rigid materials fixed on the structure, which i arranged so that series of rigid elements may be fixed to it simultaneously at least in two directions, so that parts of tunnel branches could be formed in at least two appropriate directions, of the underground mine designed for transportation of people, mechanisms and extracted material. Formation of multiple parts of tunnel branches entering the material. Formation of the first part of the tunnel branch with the help of a cutting head and a series of rigid elements in the first direction, and afterwards formation of the second part of the tunnel branch in the second direction. During formation of the second part of the tunnel branch, movement of rigid elements from the part of the first tunnel into the part of the second tunnel branch for extension of the series of rigid elements in the part of the second tunnel branch.
EFFECT: application of the method considerably reduces costs, makes it possible to considerably increase speed of tunnelling and increases efficiency of production.
21 cl, 10 dwg
SUBSTANCE: method involves separation of panels into individually ventilated blocks, in which second working and first working is performed. First working is ahead of second working at least by one block; at that, second working in adjacent blocks is performed simultaneously. Air supply and ventilation mine workings are routed along the panel boundaries. Each block of the panel is outlined on three sides with first block working. Panel and block mine workings are located symmetrically relative to the panel axis and connected to each other by means of cross passages made at the beginning of each of the blocks. Local ventilation plants are located in T-pieces arranged on the panel axis and on its boundaries at connections to main entries. Return ventilation air jet is removed from the T-piece to main entries through a crossing. The panel is developed in the direct order by means of subsequent development of blocks, and reserves of each of the blocks are developed in reverse order. Delivery of mined rock from the blocks is performed to two unloading points located at the connections to main entries.
EFFECT: increasing the panel productivity and reducing the time of its preparation and commissioning.
12 cl, 1 dwg
SUBSTANCE: method includes development of reserves from a border of an extraction column, drilling from surface of wells into the extraction column and primary setting of the roof. Wells are drilled to the rated line of the roof arch in one row in parallel to a stoping face in the middle part of the limit span of the main roof slab. Eutectic-hard-freezing solutions are filled into wells for the height of 1.5-2 m, rated time is maintained, which is required for melting of ice in cracks of roof rocks and formation of germinal slots, afterwards the wells are filled to the surface with the same solutions, and a hydraulic rupture is carried out in a rock massif.
EFFECT: invention makes it possible to ensure controlled primary setting of strong cracked rocks.
SUBSTANCE: method for shooting of ores and rocks on underground mining works includes drilling-off of a broken volume by opposite wells or blast holes, drilled from upper and lower drilling mines, their charging and exploding. An initiating charge in each well or blast hole is arranged at the distance La=2.25•dw, m from the bottom of the well or the blast hole, where: dw - diameter of a well or a blast hole, m, and distance between ends of opposite wells or blast holes determining thickness of a broken layer, is accepted as equal to L=2•Rr.e.+0.9•Do, m, where L - distance between ends of opposite wells or blast holes, drilled from upper and lower drilling mines, m; Rr.e. - radius of a damage zone from end action of a charge, m; Do - diameter of a bulk piece, accepted for the applied technology, m.
EFFECT: reduced specific and total flow rate of drilling, due to increased efficiency of using explosion energy.
SUBSTANCE: in the period of negative temperatures of ambient air from dehydrated dressing tails briquettes are pressed of ball shape with two diameters related with the following ratio: and volume of a filling material pressed in the form of briquettes of smaller diameter is determined according to the following formula: where Vvol - total volume of solid wastes supplied for briquetting. All prepared briquettes are frozen on the surface, mixed in hoppers with vibrators, transported and placed in a mined space of cleaning units. The ratio of this space filling with briquettes with identical diameter always makes 0.523. If for filling of the mined space a set of briquettes is used in two different diameters, then the coefficient of filling of the mined space will increase to the value of 0.597.
EFFECT: invention makes it possible to increase environmental safety of ore deposits mining in a cryolite zone due to increased volume of solid wastes return from dressing and higher extent of filling of the mined space by means of recovery of a permafrost massif in it.
SUBSTANCE: prior to start of filling works, a recumbent side of a section in a mined space to be filled is poured with water to form an ice crust, afterwards the mined space is filled with crushed dead rocks or frozen briquettes from dressing tails. The ice crust makes it possible to apply self-flow filling at the minimum angle of inclination of a recumbent side equal to αmin.=arctgKfr, where Kfr - coefficient of friction as the filling material moves along the ice crust on the recumbent side of the mined space.
EFFECT: invention makes it possible to increase efficiency of filling works when mining sloping and inclined ore bodies in a cryolite zone due to expansion of a field of application of a self-flow method of dry filling material placement in a mined space by reduction of resistance to motion of this material on a recumbent side.
FIELD: mining industry.
SUBSTANCE: method includes use of screw-drilling machine for driving of several first ventilation shafts in ore body and driving several second shafts, while second and each second shaft crosses, at least, one matching first shaft, forming first support walls, supporting ceiling. First supporting ceilings consist of ore body zones between neighboring second shafts, each first support wall has portion of at least one first shaft, passing horizontally through it. Horizontal channels are formed, each of which is placed transversely to matching second shaft between appropriate portions of first shaft, formed in adjacent support walls, for forming of group of continuous ventilation shafts. Second shafts are filled for forming second supporting walls, supporting well ceiling, and first supporting walls are extracted. First ventilation shafts can be made parallel to each other. Second shafts may be directed perpendicularly relatively to first ventilation shafts. In ore body air-outlet and air-inlet ventilation mines can be formed, placed at distance from each other along horizontal line, while first or each first ventilation shaft passes through portion of ore body between air-inlet and air-outlet ventilation mines. Driving of second or each second shaft can be performed by cutting machine, or by drilling or explosive mining.
EFFECT: higher efficiency.
7 cl, 11 dwg
FIELD: mining industry.
SUBSTANCE: method includes partial filling of extracted space of side and central mains by filling stripes from lava extracting shafts. At center of semi-lava on the side of massive, wherein next extractive column will be cut, filling shaft is additionally driven, wherefrom full filling of space between central fill stripe and fill stripe on the side of massive is performed. Preparation of next extraction column is performed under protection of erected fill stripes.
EFFECT: higher safety, higher efficiency.
FIELD: mining industry.
SUBSTANCE: method includes cutting well field portions by driving bed and field mines. At mine fields to be prepared with weak rock stability driving of several field preparatory mines is performed at portion of field with width determined from formula. Bed preparation mines on same portion are driven alter, with displacement of cleaning operations from these may be driven in portions, at which their stability is provided for technological time period with inter-drift blocks of given rigidity.
EFFECT: higher safety.
2 cl, 1 dwg
FIELD: mining industry.
SUBSTANCE: method includes extraction of mineral resource by underground mine method in liquid environment, under protection of water-resistant rock massif. Full flooding of auxiliary extracting and preparatory mines is performed, which provide for start of wiping operations, with working liquid, neutral relatively to mineral resource and enveloping rocks and being under pressure, matching value of pressure at depth of mine. Process of removal of separated rock beyond underground flooded space is synchronized with replenishment of working liquid volume in this space. Working liquid pressure can be formed by effecting it with force liquid, which is placed either in mine shaft, hydraulically connected to lower flooded auxiliary extracting mine, or in mine shaft and force column, placed on earth surface, above mine shaft, and hydraulically connected thereto. Required height of force liquid column is determined from mathematical expressions. After mineral resource extraction is finished within mine field, flooded extracted space is used for placement of toxic and non-toxic wastes of industries or strategic objects, while process of transfer of wastes or strategic objects into liquid environment is performed synchronously with removal of working liquid beyond flooded space in volume, equal to volume of transferred wastes or strategic objects.
EFFECT: higher safety.
3 cl, 1 dwg, 1 ex
FIELD: mining industry.
SUBSTANCE: method includes separating resources of all levels on blocks, in form of upwardly elongated hexahedrons. Blocks on adjacent levels are positioned in staggered order with displacement of some of them relatively to others for half of blocks width. Resources of each block within limits of hexahedron are divided on two portions: hexagonal chamber inside the block and block itself of same hexagonal shape on all six sides of chamber. Preparation and cutting of chamber resources is realized by driving field level drifts and mines, intermediate sub-level drifts and mines, and also level and sub-level orts and drifts, driven through mineral resource, from which resources of chambers and blocks are drilled and exploded. Extraction and outlet of mineral resource is performed in three rows - first chamber resources, than inter-chamber blocks under protection of ceiling blocks, after that ceiling blocks deposits. Outlet of resources from chambers and blocks is performed trough ends of level orts and mines, an also through ends of intermediate sub-level mines.
EFFECT: better use of mineral resources, lower laboriousness, lower costs, decreased block preparation time.
FIELD: mining industry.
SUBSTANCE: method includes determining width of edge zones of block, subjected to influence from support pressure, then preparatory mines are driven along block at limits of these zones and permanent rigid supports are erected therein. After that portion of block from preparatory mines to block center is extracted.
EFFECT: increased mineral resource yield coefficient, safer extraction of inter-panel support blocks, without breaking their carrying ability and without using backfill materials.
FIELD: mining industry.
SUBSTANCE: method includes dividing a level on hexahedral sections of upwardly elongated shape and is prepared by driving of field backup drift. From drift below each section shafts are driven, from which along mineral resource ascending shafts are drilled. For drilling chambers deposits by wells, sub-level drift is driven along mineral resource, access to which is provided by driving field sub-level drift and shafts. Outlet of extracted rock is performed through ends of shafts. After letting out rock from all sections ceiling beam is brought down and also let out through ends of shafts.
EFFECT: lower laboriousness, lower costs, higher efficiency, higher personnel safety.
FIELD: mining industry.
SUBSTANCE: method includes separation of a level on hexahedral sections of upwardly elongated shape and is prepared by driving of field backup drift. From the drift shafts are driven below each section, from which along mineral resource ascending shafts are drilled, meant for drilling from them by horizontal or slanting wells and extracting sections resources. Outlet of extracted rock mass is performed through ends of shafts. After outlet of rock mass from all sections ceiling beam is brought down and let out also through ends of shafts.
EFFECT: lower laboriousness, lower costs, higher efficiency, higher personnel safety.
FIELD: mining industry, particularly methods of underground mining.
SUBSTANCE: method involves advancing breakage face in under-roof layer; drilling bores in the under-roof layer and injecting weakening reagent to separate zones through the bores; drilling blind drift in front of the breakage face, wherein the blind drift has length of not less than breakage face length; drilling bores for following weakening reagent injection from the blind bore; additionally boring intermediate bores between above bores for following gas exhausting; performing under-roof layer development so that non-developed bank is left directly above breakage face support; performing stepwise weakening reagent injection into corresponding bores and evacuating gas from intermediate bores; leaving bores filled with weakening reagent for 1-2 days and supplying the weakening reagent into intermediate bores.
EFFECT: increased efficiency of mineral preparation.
3 cl, 3 dwg
FIELD: mining, particularly methods of underground mining.
SUBSTANCE: method involves cutting mineral by hydrocutting machines and headers from face massif in rectangular blocks; putting on metal cases on the blocks to facilitate loading-and-unloading operations and transportation; loading the cut blocks on hauling truck along side previously opened from breakage face side, wherein the truck position is fixed by spacing apart hydraulic post permanently connected to the hauling truck; moving loaded hauling trucks inside breakage face by hauling tracks along channel, V-shaped guiders or guiding rails with the use of haulage cargo winches arranged in berms near conveying tunnels or with the use of independent drives, wherein the conveyance is carried out to conveying and venting tunnels abutting the breakage face; loading mineral blocks from hauling trucks onto wheeled transport platforms without block turning for following transportation. Distance between rail tracks is equal to rail track width to transport blocks on paired wheeled platforms in which locomotive moves along medium track. Working area face is strengthened by individual hydraulic posts and metal hydraulic jacks and metal roof bars or by mechanized face support. The face support has fastening sections including above hydraulic jacks and roof bars, as well as wheel guiding means sections and hydraulic movers with control panel arranged on each fastening section pair. The roof is controlled by partial filling the excavated space with mineral blocks. Distance between neighboring mineral units arranged on one paired wheeled platform and on adjacent platforms may be identical and equal to distance between guiders in breakage heading. Mineral blocks are cut in several rows, wherein depth of slot at seam ground and roof is two times as thickness of mineral blocks to be cut.
EFFECT: increased output, improved safety and ecology.
3 cl, 14 dwg