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Method for extraction of thin and extremely thin steep-falling and slanting deposits

Method for extraction of thin and extremely thin steep-falling and slanting deposits
IPC classes for russian patent Method for extraction of thin and extremely thin steep-falling and slanting deposits (RU 2255221):
E21C41/16 - Methods of underground mining (winning machines therefor E21C0025000000-E21C0039000000); Layouts therefor
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Method for extraction of inter-panel support blocks Method for extraction of inter-panel support blocks / 2254468
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.
Method for extraction of thin and extremely thin steep-falling and slanting deposits Method for extraction of thin and extremely thin steep-falling and slanting deposits / 2255221
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.
Method for extracting thin and extremely thin steep-falling and slanted deposits Method for extracting thin and extremely thin steep-falling and slanted deposits / 2255222
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.
Method for mineral preparation along with releasing thereof from under-roof layer Method for mineral preparation along with releasing thereof from under-roof layer / 2269002
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.
Underground mining method Underground mining method / 2269003
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.

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.

2 dwg

 

The invention relates to the mining industry and can be used in the development of cool - and nalandabodhi very thin mineral deposits.

There is a method of developing vein deposits system with magazynowania ore (see, for example, "Development of mineral deposits of Kazakhstan". Volume 1-Development of ore deposits". M, Gosgortechnadzor, 1963, page 317, RES. System magazynowania ore), in which the blocks are prepared by drilling haulage drift, from which are passed niches, Gucci and funnel or under construction along the entire length of the block loading shelves. Practicing the camera starts with education sweeps and layered grooves, while workers are on tamakaimoana the ore body. To access the store are rising and checked, passed in mezhdurebernyh the pillars. As the conditions are partially ore generation through the bottom. After blasting chamber stockpiles and ore from cameras obrushayutsya Mezhdunarodnye pillars and PetroChina. The disadvantages of this method are: 1) a huge amount of preparatory-threaded operations; 2) large losses and dilution of ore, especially when pulling mezhdurebernyh pillars and crown pillars; 3) low intensity excavating and cleaning work; 4) the volume of excavated when the rotating drum and the cameras what's reserves breed several times larger amounts of gangue mass; 5) the danger of finding people in a mining space. Store width 1-1,2 m bounces the rock mass layers height of 2-2,5 meters While workers are clearing space on tamakaimoana ore, exposed to the danger of falling of the wall rock and ore, as well as tamakaimoana ore. When developing ore veins ranging from 0.2 to 0.5 m volumes extracted in this way the ore mass several times greater volumes of core mass, and the proportion of diluting rocks ranges from 0.5 to 0.6 to 0.8-0,83. Therefore, the proportion of ore this ore mass is only from 0.17 to 0.45. The main costs are for the extraction and processing of rock. In addition, a large dilution leads to a decrease in extraction of metals during enrichment on 15-16%, and the content in concentrates by 5-8%.

There is also known a method of developing thin lived sublevel drifts adopted for the prototype (see, for example, Agoshkov M.I., S. Borisov, boyar, VA "Development of ore and placer deposits". M, Gosgortechnadzor, 1962, s, RES. Excavation of the sublevel advanced faces), which was used during the development of the sinews of power from 8-10 cm up to 20-30 cm In this method, the floor height of 30-40 m was divided into blocks of length 50 m Training unit was made by drilling haulage drifts on vein at the level of the main horizon. From drift stope prepared, as usual, Seri is th duchek and funnels, education sweeps, and for the conditions of the stocks of the passed through the center of the camera on the ore to bomb it rocks hanging of the side of the rebels were several sublevel drifts section 2×0.8 m2every 6,5-7,5 m Of drifts drilled up and down the bore holes for blasting stock camera. Repulsed ore mass produced through the workings of the bottom. The disadvantages of this method are that it is necessary to perform a huge amount of preparatory-rifled works almost on the breed, especially for sinking workings of the bottom, which is very large ore ore with all the ensuing consequences for the results of extraction and enrichment. Workers have to be in the drifts are very small cross section and move them to itself under threat of collapse from the outdoor treatment space above the broken podathey. Limited section sublevel drifts do not allow the use of high-performance equipment, causing low productivity and the intensity of work on the preparation of inventories, and the location of the rising and sublevel drifts of the open clearing space creates a hazard to employees.

Object of the invention is the decrease in time-consuming preparatory-threaded operations, reduce losses and dilution of minerals, increases the in intensity and safety of mining operations due to the fact, the floor is divided into sections (camera) without leaving mezhdurebernyh pillars and is prepared by drilling field haulage drift, drift under each section are races, which are useful to fossil are rising (cut slits), for drilling inventory of cameras wells are sublevel drift in beneficial minerals for access which are field sublevel drift and race, the issue is smitten rock mass through the ends of the races, and after the release of the rock mass from all sections (chambers) has been coming down the ceilings and available also through the ends of the races.

The essence of the invention represented in the drawings, where figure 1 is the projection on the vertical plane of the system sublevel drifts with hexahedral cells and chess their location on adjacent floors, figure 2 is a vertical section along the line I-I.

The method is as follows. Reserves adjacent floors are divided into sections extended upwards hexagonal shapes offset by half the width of the section on each of the adjacent floor. The angles "α" the lower parts of the chamber should be more angles of repose repulsed ore. Preparation of each floor is sinking field drift (1) in the supine side veins, from which under each section of the conductor are short races (2). Race prepared the floor for useful fossil (if necessary with sticking breed) are rising - cutting slits (3) the full height of the section to leave on an upper floor ceiling pillar zigzag form (8). Between sections (chambers) pillars do not leave. The breaking of the main stocks (sections) is carried out sublevel drift by drilling vertical wells (7) and blasting them one at a time from rising edge cameras. At about half the height of the chambers (sections) pass field sublevel drift (in the supine side), under each section are checked (4), race (5) and ore sublevel drift (6), which is used for drilling inventory descending and ascending wells (7). Breakage of reserves of the camera is carried out by blasting wells in itself. Smitten the rock mass is produced through the end in the main horizon haulage drift. After the release of the rock mass from all sections (chambers) is practically one big Luggage without mezhdurebernyh pillars. After that race upper floor drilled and has been coming down the pillar-ceilings. This method of development is significantly reduced amounts of tunneling works, including breed, intensity preparatory and cleaning work, losses are reduced (especially by eliminating mezhdurebernyh pillars) and ore minerals by reducing the mining capacity and volume is robotki workings. The result dramatically increases the production capacity of the mine and concentrator, and reduced capital and operating costs of mining and milling in the calculation of the final products. In addition, increases safety, because the workers are always securely fastened in openings (in itself, drifts and races).

How to develop a thin and very thin cool - and nalandabodhi fields, including the division of the floor section extended upwards hexagonal shape, holding drifts and rising, characterized in that the floor is divided into sections and prepare a sinking field haulage drift, drift under each section are races, which are useful to fossil are rising, for drilling inventory of cameras wells are sublevel drift in beneficial minerals for access which are field sublevel drift and race, the issue is smitten rock mass are carried out through the ends of the races, and after the release of the rock mass from all sections will obresult ceilings and also producing through the ends of the races.

 

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