Method for extraction of steep-falling and slanting deposits of low and average power

FIELD: mining industry.

SUBSTANCE: method includes conditional separation of levels on chambers, which are made in form of stretched upwards hexahedron and placed in staggered order, at each lower level with displacement for half of chamber width in comparison to upper one. Preparation of each lower level is performed by driving field drift of main level, from which entries to ore deposit and orts to hanging side of deposit are driven, from orts ascending drifts are made and cut with cutting slits. For extraction of field resources a field sub-level drift is driven, entries and ore sub-level drift near lying side, from where orts are driven, from drift well fans are drilled and main resources of level are exploded through cutting slit. Outlet of ore from each chamber is performed through ends of outlet mines in main and intermediate levels. After removing main resources inter-level block is destroyed and ore from it is removed through entries of main level.

EFFECT: higher efficiency.

2 dwg

 

The invention relates to the mining industry and can be used in underground mining steeply dipping mineral deposits of small and average capacity.

There is a method of designing cool - and nalandabodhi ore deposits sublevel drifts (see, for example, Agoshkov M.I., Malakhov G.M. Underground mining of ore deposits. M., Nedra, 1966, s, RES), which in the lower part of the camera unit are preparatory and rifled generation bottoms (drifts and lots of duchek and funnels), mezhdurebernyh the pillars are rising, at the bottom of the block and in the center of the camera do the cutting in the center of the camera are rising, form a cutting gap, which then beat the ore using deep wells, probatively of sublevel drifts. Repulsed in the chamber ore mass produced through the workings of the bottom, then obresult Mezhdunarodnye pillars and ceilings. The disadvantages of this method: 1) a large amount of time-consuming and costly training and development workings, including rocks, especially when developing fields of low and medium power; 2) a large proportion of stocks in mezhdurebernyh the pillars due to sinking them in itself, and also in the roof and the bottom, as a result there are large losses and dilution of ore, especially when the zoom is Noah the height of the floor, not durable, host rocks and steep enough angle of incidence deposits; 3) low intensity training and testing blocks and, as a consequence, the limited production capacity of the mine.

Also known development method is adopted for the prototype (A.S. No. 609433 from 7.02.78,, E 21), in which the camera diamond shape of the top floor relative to the same cells of the lower floor have in a checkerboard pattern. Training units is carried out by drilling a series of field drifts (3 on each floor), which are crosscut and zagadki to the ore body, at the bottom of the chambers are Horta, of which niche, Gucci and funnel, and the centers of the cameras are rising, which is cut in the cutting gap. The breaking of ore in the camera perform well, Probuzhdenie traveled from ore in the middle (height) of the camera intermediate drift, and repulsed ore produced through one final development in the lower part of the chamber with the delivery force of the explosion on the inclined bottom walls of the chamber. The disadvantage of this method is that the shape of the camera does not allow you to have large amounts, especially in the rocks of weak sustainability. For example, if the allowable span of the camera (in a broad place) equal to 30 m, the height of the floor cannot be installed more than 30 feet, It will require huge costs ol the move story revealing and development workings. The disadvantage of this method is that due to the large spans of the camera in the middle of the diamond and the possible collapse this place rocks hanging side it is impossible to reduce the loss of ore in the chambers and pillars and its dilution at release. The disadvantage of this method is that the angle of the lower wall of the chamber adopted less than the angle of repose of the produced ore that requires additional expenses CENTURIES to vzryvozashchitu and does not ensure the completeness of the ore from the cameras. For this reason, it is almost impossible to extract leave the pillars.

The invention is directed to a more complete utilization of mineral resources, the decline of labour-intensive and costly training and development workings and time of preparation and development of the reserves due to the fact that the floors are divided conditionally on camera, cameras shape of an elongated hexagon and come in a checkerboard pattern, each lower floor offset by half the width of the camera compared to the upper, at the same time preparing each of the lower floor is sinking field drift of the main horizon, which are races to the ore Deposit and Horta before hanging Boca reservoirs, vectors are rising, which is cut in the cutting slit for blasting stocks are field sublevel drift, race and mining sublevel drift from lying is his side, which are Horta, drift razvarivat fans wells and blow up on the cutting slit basic stocks of the floor, the ore from each camera are carried out through the ends of the outlet openings on the primary and intermediate horizons, and after the release of major stocks will obresult intermediate the rear and ore from his release through the main races of the horizon.

The invention presents drawings, where figure 1 shows the projection on the vertical plane method development figure 2 is a vertical section along the line I-I.

The method is as follows. Reserves all floors are conventionally divided into a series of chambers (sections) hexagonal shapes without leaving mezhdurebernyh pillars. Camera each underlying aquifer have in relation to the cameras overlying order, and each section (the camera) are in the form of an elongated upwards hexagon. To facilitate the production of ore from the camera, the angles of the sides forming the trench should be taken not less than the angle of repose ore thump of hands with regard to its possible caking, for example not less than 45°. For the implementation of the new method on each horizon on the rocks lying flank pass haulage field drift (1)for each camera (section) are small crosscuts (races) (2) and Horta (3) to the hanging side sales is. Approximately at half the height of the cameras are field sublevel drift (4), which pass between the chambers races (5) and ore sublevel drift (6). At the same time of check-in (2) of the main drift of the horizon (1) are cutting itself (7), which is then cut in the cutting slit (8). Drilling of the main stocks chambers (sections) is carried out on the ore sublevel drift fans wells (9), which explode on cutting the slot (8). After the break-down of inventories camera crosscuts (3) and (5) and Horta (4) are used for ore. When the floor height and cameras can be several intermediate field and ore drifts, which also must be determined taking into account the most efficient use of drilling equipment and equipment for drilling prostrakan, as well as intensification of production of ore from the cameras. It is better to perform the treatment and production of ore in several adjacent chambers. After the ore chamber stocks has been coming down the ceilings (10), ore race comes under the collapsed rocks through the ends.

Thus, in contrast to the known variants in the new version of the system sublevel drifts Mezhdunarodnye pillars are left, instead of formation of the complex workings of the bottom block are only in ORT, instead of sinking two rebels (one in idocument the pillar, another in the cell - cutting) are one of the cutting itself, and between the cameras are only races, instead of the notches of the block of stock in three stages (first camera, the second mezhdurebernyh and third pillars of the crown pillars) in the new version of the stock removed in two stages (camera and ceilings), instead of making the whole of the ore mass generation through the bottom when the new version of the production is carried out through the passage into the lower parts of the chambers and the races of intermediate horizons. Because the ore reserves in the ceilings are low, and the main stores can be extracted without significant dilution and losses, and in General the power loss and dilution in the new version of the system will be several times less than in the base case. Improve and other technical and economic indicators of the development unit, in particular reduced preparation time and reserves, increasing production capacity of the mine and concentrator, which lowers costs on-mine and concentrating.

Method development steeply dipping ore bodies, small and medium power, consisting in borehole blasting reserves cameras on the open treatment space with the subsequent collapse Zelikovich stocks, characterized in that the floors are divided conditionally on camera, cameras shape of an elongated hexagon loc is shown in a checkerboard pattern, on each lower floor offset by half the width of the camera compared to the upper, at the same time preparing each of the lower floor is sinking field drift of the main horizon, which are races to the ore Deposit and Horta before hanging Boca reservoirs, vectors are rising, which is cut in the cutting slit, for the conditions of the stocks are field sublevel drift, race and mining sublevel drift from lying flank, from which are Horta, drift razvarivat fans wells and blow up on the cutting slit basic stocks of the floor, the ore from each camera are carried out through the ends of the discharge openings on primary and intermediate horizons, and after the release of major stocks will obresult intermediate the rear and ore from his release through the main races of the horizon.



 

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The invention relates to the mining industry and can be used in underground development of powerful fields from the level and sublevel blasting and ore under the collapsed covering rocks

FIELD: mining industry.

SUBSTANCE: method includes conditional separation of levels on chambers, which are made in form of stretched upwards hexahedron and placed in staggered order, at each lower level with displacement for half of chamber width in comparison to upper one. Preparation of each lower level is performed by driving field drift of main level, from which entries to ore deposit and orts to hanging side of deposit are driven, from orts ascending drifts are made and cut with cutting slits. For extraction of field resources a field sub-level drift is driven, entries and ore sub-level drift near lying side, from where orts are driven, from drift well fans are drilled and main resources of level are exploded through cutting slit. Outlet of ore from each chamber is performed through ends of outlet mines in main and intermediate levels. After removing main resources inter-level block is destroyed and ore from it is removed through entries of main level.

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: method includes driving ventilation-backfill and drilling-loading gains, extraction of mineral resource by cross-directed chambers of rhombic or ellipsoidal shape, with displacement of adjacent levels chambers for half their width, with extraction of ore by wells explosion and backfill of extracted space. Directly above upper level protective ceiling is constructed with slant 5-6° towards hanging side of deposit. Width, height of chambers an height of upper level chambers, slanting angle of side walls of chambers is determined from mathematical expressions, on basis of stable calculated span of protective ceiling, width of drilling-loading gain and angle of inner friction of ore massif. After construction of protective ceiling ore in chamber is extracted by mines by exploding wells in compressed environment, while next mine is extracted after backfill of previous one. In unstable rocks, prone to cave-in, face of cleaning chambers is slanted at angle, appropriate to angle of natural slant of ore massif. In ores with rock layers cleaning chambers face is slanted at angle, appropriate for angle of falling of ore deposit.

EFFECT: higher safety, higher efficiency.

3 cl, 4 dwg

FIELD: mining industry.

SUBSTANCE: preparation of resources of ore body is performed by driving in main level and on other levels of field backup drifts, from which drifts are driven and along lying side ore trench drifts are driven. Resources of levels are separated on sections, in each of which ascending lines are driven, from which sub-level ore drifts are driven and then ascending lines are cut on cut slits. Extraction of block deposits is realized via deep wells from trench drift and sub-level ore drifts. Outlet of ore mass is performed through ends of drifts into field drifts of levels and main level.

EFFECT: lower dilution and ore losses.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes preparation of bottoms of blocks by driving drifts at main level from field backup drift, from which along lying side ore trench drift is driven, following extraction of block resources is performed from trench drift and sub-level mines. Outlet of ore mass is performed through drifts ends.

EFFECT: lower dilution and ore losses.

2 dwg

FIELD: mining industry.

SUBSTANCE: method includes extraction of deposits by panels, wherein drilling ascending lines are driven, drilling of wells fans from ascending lines and following extraction of mineral resource. Extraction of resources is performed in upward direction, while ascending lines are driven with deepening in rocks of lying block, concurrently on its soil metallic sheets are placed, on which firstly rocks are extracted, which are ten sent to previously extracted chambers. Extracted ore mass is let out of chamber and loaded at main level.

EFFECT: higher intensiveness of extraction, higher ore yield, decreased dilution.

3 dwg

FIELD: mining industry, particularly for underground ore deposit mining.

SUBSTANCE: method involves mining the deposit by rooms in which raise drills are bored; drilling wells arranged in fan-like array and cutting mineral. Raise drill is deepened in lower wall rock and bottom thereof is covered with metal sheets. Ore is cut in parts simultaneously with rock excavation in the range from raise drill ground to room ground at original ore mass slope angle.

EFFECT: increased cutting intensity, reduced ore losses in lower wall rock at room fender due to impoverishment thereof.

3 dwg

FIELD: mining, particularly ore deposit development.

SUBSTANCE: method involves drilling sublevel drifts or crossdrifts, haulage roadways and drives along with cut rock unloading through drive ends, wherein drives extend for the full height and over full cross-section from haulage roadways; closing upper parts of drive ends with shields or crossbars before rock unloading so that shields or crossbars reach end part of unloading entries; discharging cut ore through lower parts of drive ends; increasing drive end widths and reducing lengths thereof for value determined from mathematical expressions taking into consideration height of main and end parts of unloading entry, depth of loading device bucket and natural inclination angles of ore mass to be discharged and generating line of ore bed.

EFFECT: increased efficiency of ore field development.

3 dwg

FIELD: mining, particularly underground mining.

SUBSTANCE: device comprises support member pivotally connected to enclosing member. The enclosing member is secured to posts by jack and is installed at an angle enough for ore mass sliding down. Lower part of enclosing member is located at height enough for loader bucket operation. Enclosing member length defined between mine roof and above enclosing member location height is determined from mathematical expression. Enclosing member width is equal to mine width.

EFFECT: increased effective cross-section of ore mass to be drawn and, as a result, increased ore piece dimensions, reduced mine driving volume, decreased losses and ore dilution, increased output.

2 dwg

FIELD: mining, particularly underground ore deposit development.

SUBSTANCE: method involves dividing ore deposit into mining levels, cutting the mining levels in descending order and filling excavated space with hardening filling material, wherein filling material is supplied from day surface via main filling holes drilled in ledge wall rock outside shifting zone, which is formed in ledge wall rock during full ore deposit development. The first layer is cut from one mining level boundary along ore deposit strike in direction to another mining level boundary. Additional filling holes are drilled in zone defined by two lines before the first mining level cutting. The first line is extension of resulting excavated space boundary from ledge wall side. The second line is extension of the first mining level boundary along ore deposit strike, from which mining level is cut. Main filling holes are drilled before putting additional filling hole out of operation. If additional filling holes are arranged within the shifting zone forming in ledge wall rock during full ore deposit cutting additional holes are operated up to cleaning work development stage. At cleaning work development stage additional well deformation is equal to threshold deformation values. Safe additional hole operation is impossible if deformations exceed above threshold values. In particular case additional filling holes are made along bisector of angle defined by two lines, namely by the first line, which is extension of resulting excavated space boundary from ledge wall side, and by the second line, which is extension of the first mining level boundary along ore deposit strike, from which mining level is cut.

EFFECT: reduced mine construction time.

2 cl, 2 dwg, 1 ex

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