Method for extraction and underground use of coal, method for extraction of disturbed beds, undeground electric energy generator (variants), face scraper conveyor, weld pan for scraper conveyor, coupled chain for scraper conveyor, method for controlling a complex for unmanned coal extraction
FIELD: mining industry.
SUBSTANCE: method for extraction and underground use of coal includes cleaning extraction and dumping of coal, fixing and controlling ceiling and transporting coal along face to drift. On the drift, in moveable generator, coal is pulverized for intensive burning with use of jets in water boiler firebox, where high temperature of steam is achieved (about 1400 C°), enough for decomposition of water on oxygen and hydrogen. These are separated, then oxygen is fed back to jets, and hydrogen is outputted along pipes and hoses in drifts and shaft. Variants of underground generator for realization of this method are provided. Also provided is method for extraction of disturbed coal beds by short faces. It includes extraction and dumping of coal on face conveyor, fixing of ceiling behind combine, moving conveyor line and support sections in direction of cleaning face displacement, control of ceiling with destruction and partial filling. Extraction of coal is performed in short curvilinear faces by long stripes along bed, in straight drive without forwarding drifts, with preservation and reuse of ventilation and conveyor drifts, equipped with mounting manipulator robots, with fixing behind combine by automatically operating support deflectors without unloading and displacing sections in area of coal extraction. Extraction and transporting of coal is performed by fast one-drum combine and curvilinear reloading conveyor, supplying coal to drift conveyor or immediately to underground gas or energy generator placed immediately on drift. Also proposed is face scraper conveyor for realization of said method, wherein pans are made with step along front face profile, greater, than along back one, while forming common line curved towards face with constant curvature. Also proposed is a method for controlling complex for unmanned coal extraction.
EFFECT: higher efficiency, effectiveness, broader functional capabilities.
8 cl, 5 dwg
The invention relates to the mining industry, mainly for stoping formation of coal deposits with the use of treatment harvesters, maccray and scraper conveyors in the mechanized complexes.
Known methods of extraction and use of coal with the use of wastewater treatment systems, including excavation machine (in the form of a Shearer or plow, delivering machines (E) in the form of a scraper and belt conveyors and shoring (K) in the form of hydraulic mobile sections of the main supports and supports mates with drifts, which are interconnected for joint operation with the help of technology, kinematic or constructive relations (1), Vnetian and other Mining and transport machines and systems. M.: Nedra, 1991, p.6, 7).
The disadvantage of this technology was the low competitiveness of coal due to the high cost of transporting coal mine drifts, the trunk, on the surface of the rail to consumers of coal, often located in other regions of the country. For example, in the first five-year plan, in the period of industrialization of the country, was created Ural-Kuznetsk combine UKK, designed for permanent rail delivery of coal from the Kuznetsk basin of the Ural metallurgical plants.
Known under study and development of alternative methods of production and use the deposits of minerals. These include methods based on the use of physical and chemical properties of rocks, such as dissolution, leaching, distillation and underground coal gasification, (2), see (1), p.5). Particularly promising are methods of underground coal gasification. The relevance of these methods is particularly relevant in the context of the vast coal reserves in the Russian Federation, which are estimated at more than 1,000 billion tons of conditional stocks suitable for industrial use, (3), Mwhalen, etc. All about the angle. M.: Nauka, 1989, p.102-103).
Known work in the field of underground coal gasification Mendeleev (1834-1907), the author of the world-famous Periodic law of chemical elements.
The advantage of these methods is that the surface of the earth are delivered through pipes gaseous products of the distillation of coal. However due to the exclusion of coal transportation on the roadway and on the surface of the earth is achieved by reduction of pollution and the release of large areas of arable land, which are now being spent for the construction of mines, placement of Railways, terrigenic and waste dumps.
Another invention Mendeleev was to develop a method for efficient combustion of coal and any solid fuel by pre-grinding it to dust-like condition, (4), the Pain is th Soviet encyclopedia. M: ogiz, 1938, V. 38, str).
In Soviet times, according to the program of underground coal gasification, Mobassa and Kuzbass a long time was carried out industrial tests in a specially created trust Podzemgaz.
Scheme of underground gasification was the fact that in the area of the reservoir with the surface of the earth were drilled paired well with arcing were burning layer, simultaneously served by one well clean air for combustion of coal, and another well produced gaseous products of incomplete combustion of coal.
The disadvantage of this technology, underground coal gasification at trials in Mombassa was certain losses and incomplete use of coal in the reservoir due to high water cut reservoirs, shortness of control over the degree of dewatering of the reservoir, the loss due to partial combustion of the coal in the gasification process and the lack of control over the process of gasification.
The invention aims to remedy these disadvantages, ensuring complete combustion of coal and direct control over the drying process of the formation and extent of the excavation of the reservoir.
This task is solved in that the method development and underground coal use, including treatment and breaking nabalco coal, mounting and control the roof and transporting coal along the face to the roadway, distinguish the different topics on the roadway, in a mobile generator, the coal is ground into dust for intense burning it using nozzles in the furnace water boiler, where it achieved the highest steam temperature (1400 ° C), sufficient to decompose water into oxygen and hydrogen, is their separation, after which the oxygen is fed back to the injectors, and the hydrogen is given to the surface through hoses and pipes laid on the roadway and the shaft, which excludes transportation of coal at the mine, the barrel and the surface of the earth by rail to distant consumers of coal.
There is a method highly effective development sloping coal seams using the most advanced technology and comprehensive mechanization of the treatment works. For example, in USA, on mine Mountaineer in lava length of 330 m in length post 3280 m, harvester capacity of 1040 kW at a voltage of 2300, the conveyor width 950 mm, with a capacity of 1,600 kW (3×535), achieved the average daily production of lava 21.7 thousand tons, at podviganiya 27,2 m per day, the annual production from the lava - of 7.48 million tons, at the time of testing post 121 days, (5), Nilasena, Bkiss. The main directions of development of the technology and complex mechanization facilities sewage treatment works for testing flat coal seams. The magazine “Mining machines”, January, 2001, p.39).
Neprimenimosti advanced technology in domestic conditions associated with difficult mining and geological conditions and faulting of occurrence of layers. The impossibility of providing high-performance longwall mining in terms of legacy Sanogo Fund due to the low bandwidth of underground transport. In addition, the low voltage network is an obstacle to the use of electric motors of high power and high cost of electricity and its lack can count on a great load on the face.
Developed in Russia lining, harvesters and conveyors fourth generation designed for conditions in the geological strata without violations, with a calm hypsometry, with normal conditions the capacity of the reservoir, gazoobilnosti, water production, the outburst of the layer, in the layers with fairly stable side rocks, without violating the occurrence of the reservoir, with the ability to cut excavation pillars of great length, the width of the slaughter of up to 300 meters
In the technical conditions for the applicability of the domestic coal mining complexes can have up to 20 items of similar parameters. Practice has shown that deviations from these conditions only one parameter degrade the performance of complex-mechanized slaughter (KMK) in 1,5-2 times. Layers, fully meets the technical requirements are not more than 5.5% of the RF. When cutting a mine field on the treatment posts practically is necessary to cut the posts with the minimum disruption to the movement of the stope, while still in production are the discharges, reduce, and replace coal rocks that significantly reduces the rate of podvigina and performance stope, (6), Aol and other Fastening and control the roof in full-mechanized mines. M.: Nedra, 1993, str).
In this regard, at present in the coal mining industry in Russia pursues a policy of closing small coal mines with adverse geological conditions and old mines limited bandwidth of underground transport.
The invention aims to remedy these disadvantages, the development of systems and technology for their application, as well as providing a highly efficient extraction of disturbed strata during mining system with their long poles along strike, even in low bandwidth of underground transport.
This task is solved in that the method efficient development of the disturbed coal seams short faces, including breaking and nabalco coal face conveyor, the fastening of the roof behind the harvester, shifting of the rod conveyor and shields in the direction of podvigina stope, management of roof collapse and partial tab, wherein the recess of the coal produced short curved faces long strips, direct the Odom without advanced drilling drifts, with keeping in mined-out space and reuse ventilation and conveyor drifts, equipped with mounting manipulators, with attachment for harvester automatically operating visors lining, without unloading and shifting of the sections in the area of coal extraction, and the blasting and transportation of coal to produce high-speed combined harvester and curved conveyor loader, feed the coal face conveyor or directly on the underground, located on the roadway, the gas generator or generator power.
Known for well-proven global compact steam boilers of steam locomotives, providing the conversion of the energy of combustion of coal in the energy of steam, (7), Encyclopedic Handbook of mechanical engineering, M.: State. publishing house of the engineering literature, 1949, v.13, str, Fig).
In relation to the existing roadway arched profile, section 10-12 sq.m, locomotive boilers have dimensions of the same order. The diameter of the boiler of the locomotive equal 1735 mm, height together with the furnace 2460 mm, (8), see (7), str, Fig). A large length of the boiler (about 13 m, (9), see (7), str, Fig) compared to the length of the extraction column, measured in hundreds of meters, not significant.
Steam engine steam engine to drive an electric generator too quiet is one. But well-known and widely used in power plants steam turbines with high speed, of the order of 3000 rpm, and almost unlimited power, of the order of 100,000 kW. Steam turbine when operating at power plants on the free surface of the earth replaced not only the previously used steam engines, and internal combustion engines, due to the excessively large size of the latter, (10), see (7), str).
The objective of the invention is the use in mine conditions steam turbine to convert the energy of steam into electricity, which is especially important for mines subject to the restructuring.
Restructuring of small mines implies, first of all, the closing of the mines with low bandwidth transport and trunk and mines with the broken coal on which it is impossible to apply modern high-performance systems.
This task is solved in that the proposed underground electric power generator including a furnace for burning coal and the energy Converter of heat into electric energy, characterized in that it is made wheeled and moved on rails laid on one side of a given roadway section is equipped with a crusher to the mill and furnace, which burns coal and methane obtained after the vent blowing air through ocist the second face, and the resulting combustion slag and ash thrown into the goaf monitor and jets of water supplied with conveyor drift and feeding the boiler which supplies steam to the steam turbine associated with the rotor of the generator.
Also known thermal sources of electricity that uses thermal energy to generate electricity without the use of a steam boiler. This so-called thermoelectric energy sources used so far only in the areas of new technologies and having a insufficient of specific performance of substantial size (about 50 kW per cubic meter of product).
In the volume of the engine equal to 2×3×20=120 cubic meters, thermoelectric Converter can give in the future electric capacity of about 6000 kW.
Combustion in the furnace with the capacity of 1 t/min coal with calorific value of 8000 kcal/kg and efficiency, equal to 0.2, the received power is about 1000/3600×8000×4,19×0,2=1860 kW.
Thus, thermoelectric Converter in the dimensions of the engine can take 6000/1860=3.2 t/min coal, i.e. normal to the coal-mining combine performance.
The output power from such a slaughter would amount to 6000 kW. Costs on breaking coal and its transportation along the lava equal to approximately 2 kWh/t, i.e. a 2×3,2×60=384 kW or 6.4 per cent.
The objective of the invention is the preservation and realization of opportunities of small mines with mining and geological disorders and insufficient capacity of the transport and lift, creating conditions for profitable their work.
This task is solved in that the proposed underground generator (option), characterized in that it is made in the form of a mobile furnace moving but the roadway for clearing face, and includes a large number of thermoelectric elements electrically coupled in parallel and serial groups and thermally contacting, on the one hand, with the hot gases, and on the other hand - with cooling water which is supplied through the passage to cool the external circuit of the generator and the power monitor, which serves for the discharge of slag and ash content in the mined-out area.
Known construction downhole scraper conveyors, including pans, interconnected by front and rear belt, with limited bending in terms of angle of 2-3 degrees for wave bending and shifting of the conveyor after the harvester with preservation of the General rectilinear shape of the face, (11), Vinkuran. The development of technology for underground coal mining, potash and manganese ores. M.: Nedra, 1985, p.92-115). All portable conveyors (p.98) apply Rasht is key, consisting of two special-shaped steel (p.100 and 111) and horizontal sheets between them in the form of a medium of communication and bottoms, and chains consist of lengths of up to 25 m (str) with centrally located branches of the chain on the conveyor SOC 271, (str). All pans are applied vertical Platini inside setprofile for horizontal bolts attached equipment in the form of a trough of the cable-handling vessel, and the guide of the harvesting machine with the goaf side of the conveyor and loading shares with face side (p.105).
The disadvantage of the prototype is the inability of the pipeline with a constant bending, as well as the complexity and lack of strength bolt attaching implements.
The invention aims to remedy these disadvantages.
This task is solved in that a downhole scraper conveyor comprising a trough, interconnected by front and rear profile, scraper chain, consisting of lengths of chain, removable scraper and conveyor drive, characterized in that the pans are made with a step on the front face of the profile is greater than at the rear, forming a common line, in terms of curved towards the bottom with constant curvature.
The disadvantage of welded pan scraper conveyor consisting of two special-shaped steel C-shaped section, is insufficient the th strength and complexity attach attachments using vertical platico side profile, with holes for horizontal bolts.
The objective of the invention is to eliminate these disadvantages.
This task is solved in that the trough is provided with two horizontal shelves with vertical holes with any step for mounting attachments with goaf side and one horizontal shelf for the back hook of the front skis of the harvester and the base of the toe with the downhole end of the conveyor.
The third drawback of the existing scraper conveyors is the fact that the presence of two branches of the circuit in case of bending of the conveyor in horizontal projection will lead to overloading of one branch of the circuit and the underutilization of the second branch of the chain.
The objective of the invention is to eliminate this drawback.
This task is solved in that a coupled circuit including downhole and dammed branch circuit, with contiguous branches of the chain conveyor, curved in the horizontal plane, characterized in that the branches are of different chain step, and the step chain downhole branches to step chain dammed branches is equal to the ratio of the radii of the conveyor along the axis of the downhole branches to the radius of the conveyor along the axis of the dam branch of the chain.
Known way to control automated complex CMA, which includes automated harvester RCOA, downhole scraper conveyor SPC, ray is becoming hydrated RKD, lining mates CSSA, power train and control system for the complex. The system worked on the reservoir with a capacity of 1.9 m, with the angle of incidence 8-14 degrees in lava length 190 m, with the length of the post 1350 m the Complexity of installation of the complex amounted to 872 people-shifts., within 67 days, with the use of means of mechanization of construction works. In each production shift was setaliases 9-10 persons, including the driver of the combine and his assistant, three THUNDERSTORMS management support and conveyor (unit scheme: 41 shield section per worker), one of THUNDERSTORMS management support mates and to monitor the displacement of coal with the AFC on the face, two or three STORMS on the construction at the bottom of the lava buffer strip hodka, one electrician, (12), Aol and other Fastening and control the roof in full-mechanized Stopes. M., 1993, str-239).
The mass of the complex is 1550 t, the installed capacity of 750 kW, power supply 1140, time shifting one section in the automatic mode was 18 seconds, with the average performance of the system, operating in 3 shifts of production, 2345 t/day. and the average podviganiya stope 117 m/month.
The disadvantage of this complex and its control systems is the constant presence of people in a mining face, in the dusty environment of mining the coal, unloading support units in the area RA is the notes of the harvester, the limited speed of the harvester lack of speed fastening, unsatisfactory operation of the automated control system of the combine, including hypsometry layer. The system operates in a system with long faces return stroke with the provisional holding of the excavation drifts requires favorable conditions without geological violations of the reservoir and has a large mass lining, conveyor and Shearer.
According to the results of industrial tests it was decided to combine production and supports only conventional non-automated design (str).
The objective of the invention is to eliminate the disadvantages of the prototype, the effective extraction of disturbed strata, without the constant presence of people in a mining face, the possibility of coal extraction without prior preparatory workings, sharp, several times, facilitating lining, conveyor, combine and full mechanization and automation of work mate lava with drifts and when remounting of the complex from one lava to another.
This task is solved in that a method for managing complex for deserted dredging of coal, including motor control cutting and Shearer, hydraulic cylinder raising and lowering of the cutting drum in hypsometry layer, hydrodata the AMI support units for fastening the roof for operating the harvester and advancing shields and conveyor, characterized in that the first operations are performed remotely via a power cable from the Central control and Central magnetic stations located on the roadway, and control of the hydraulic cylinder on hypsometry reservoir is hydraulically with the help of located on the harvester witness set, the control lever which interacts with the tracing line attached to the rod conveyor and custom periodically engineer complex with trailers combine with tuning control passage with the visual observation of the excavation of coal relative to the coal-rock, and control of the fastening of the roof behind the harvester is performed automatically by the release swivel screens lining pressing his fist truck on the drive levers (plungers linear hydraulic blocks of shields mounted on the rod conveyor, and when the control conguration travel possible periodic stops combine with remote manual control complex, located on the trailing bogie of the harvester, which involves managing an electric cable with a Central ELECTROPULT complex and hydraulic hoses with a witness set of the processor and is equipped with air hose dust-free air from the harvester in the area of the truck, and management of front shifting with the ava and three groups of shields is performed remotely from a Central control panel for mains supply rod P, highways vidivici groups of sections B1, B2, B3 and highways of spreading racks R.
Figure 1 presents a General view of the complex RSD when pulling the first strip, a view in plan, figure 2 presents the scheme of a longwall panel along with the development of a third runway, figure 3 - a section b-B conveyer drift, figure 4 - cross section a-a on the bottom, figure 5 is a view in plan of the arrow C.
Complex RSD consists of combine harvester 1, the conveyor 2, shields 3, androutsou lining mates with 4 racks 5 and a movable robotic arm 6, gate equipment, including remote control with magnetic station 7 and a generator of electricity or gas 8.
Combine 1 consists of a rotating cutting drum 10 with a fixed gear 11, which is located inside the drum resting on the tubular handle 12, associated with the housing 13 of the combine horizontal axis 14 parallel to the axis of the rotating drum 10, located in 15 degrees from the normal position to turn the line emission coal in the direction of the conveyor and thus ensuring self-loading the broken coal. On the body of the harvester fixed worm gear feed 16, the output sprocket 17 which communicates with a horizontal fingers of the rack 18 of the conveyor. The housing 13 of the combine has three pillars reverse grips. Front support 19 with the two rollers 20 and reverse what azepam 21 communicates with the downhole profile conveyor, having a horizontal shelf 22, the protruding toward the bottom, and two landslide support 23 combine interact with the bottom-hole, top, obstruction and lower surfaces of the rack 18, which is connected to the conveyor by means of bracket 24 and the vertical fingers 25, passed through two horizontal shelves 26 and 27 of the landslide profile of the pipeline. The bracket 24 is attached also the groove 28 of the cable-handling vessel and swivel bearings 29 of the tracing line 30 that define the profile of hypsometry layer for servo hydraulic system operating the Jack 31 harvester designed lifting and lowering of the cutting drum 10 as the movement of the harvester along the length of the lava.
Combine 1 operates as follows. During the rotation of the drum cutters 32 remove chips of coal, which moves along the first cylindrical surface of the freshly cut face, and then, at the end of this surface, coal inertia is thrown tangentially in the direction of the conveyor as the horizontal axis of rotation of the drum is made at an angle of 15 degrees to the direction of podvigina.
First, the harvester moves from conveyor drift, taking the upper stack layer adjacent to the roof, and the flow of coal moving the conveyor along the ledge 33 of the face, and then the drum is lowered down, and the harvester moves in the opposite direction from the ventilation drift to the conveyor, handles the ledge 33 and is ochwo - in this case, the flow of coal from under the drum also emitted in the direction of the conveyor, and padisha soil layer, the harvester moves strictly along the border of the coal-rock, which is copied by the program embedded in the configuration of the tracing line 30.
The conveyor 2 consists of pans, welded of the two profiles C-shaped section 34, the United middle sheet and the bottom, and the rear profile has two horizontal shelves 26 and 27 with a vertical hole with the desired step, allowing it to accommodate between them the cage 35 for articulated in terms of binding sectional beams 37, providing a constant step of shields with a curved configuration of the conveyor in the plane of the layer. On the front face profile has one horizontal shelf 22 for movement back hook 21 of the combine harvester 1 and rigid support sock-blade 39. The pan connection is a longitudinal fingers, placed in the openings 40 between the two shelves of the landslide profile and dimensions of the sock-shares - with downhole side. When this step through the front profile is larger than the step on the back of the landslide profile, which results in a curved configuration of the conveyor in the plane of the layer. The chain conveyor is received in serial form coupled circuit with contiguous branches 36, consisting of lengths of 25 m, However, is sat the active sampling of segments along the length so to the outer branch was longer than the inner (about 0.5%), which means that the ratio of the step chain is equal to the ratio of the corresponding radii in the Assembly of the entire pipeline.
Shield section 3 consists of two bases 41 of the brackets 42, 43 overlap, consisting of two floors with swivel sun visors 44, of two pairs of beams 45, two racks 46, two jacks 47 (not shown) visors, one motor of the Jack 48 and one corner of Jack 49. The entire section has 6 cylinders 3 cylinder on 1 metre lava. Motor Jack with a downhole side is connected by its stem with the front shackle 50 connecting the nasal part of the grounds, and their pins 51 on the cylinder is connected with the rear ski 52 fixed on the dam ends of two conveyor beams 37. Corner Jack 49 its rod connected to the two brackets 42 bases, and the cylinder is connected with a horizontal finger that combines both of the paired balancer 45.
Shield section is as follows. With the passage of the harvester with the notch of coal attached harvester truck 54 with a given constant distance from combine presses the lever set 55 of the shields and includes vidisco Jack swing canopy 44. After excavation of the upper stack layer harvester rapidly performs the reverse with the notch of the ledge 33 of the reservoir and with the Stripping of the soil with the release of amboina in conveyor drift in position 32. Thus, the notch is made without the presence of lava drivers lining and combine. Then applying pressure to a special supply line to the rod P, is connected with the rod cavities of all of the jacks 48, and becoming the front moves to the bottom, starting from all earrings 50 rasperry of shields. Then, the Central control unit 7 is supplied to the pressure in a separate line B1 front vidivici support units of the first group movement. This highway is connected with the piston cavities of the jacks 48 sections№1, 4, 7, 10, 13 etc. in the rod end of the Jack canopies 44 these same sections. Simultaneously, the line of thrust of the racks R served low pressure roof when wyderka about 2-3 MPa. As a result, sections of the first group are first cleaned to failure all rotary visors 44, after which the pressure in the line B1 will rise to the full pressure of the pumping station, and the section will come forward with support of the roof. After a full vidivici sections to switch the line pressure P, and is full disposition of all shields.
The same operation is then performed for the second group of motion, and then for the third. The cycle ends, and all works begin in the second cycle, etc. Therefore, when the extraction of coal and advancing roof supports and rod conveyor all operas is tion occur without the presence of people in a clearing face.
The presence of the driver of the complex in the lava provides only occasionally in the form of a control configuration of a single travel trailer truck harvester at a speed of 30 m/min with stops to adjust the height of the tracing line 30 program control system combines hypsometry layer. In these passages the person visually observes the deviation of the movement of drum 10 of the harvester from the actual boundary of the coal-rock, and only in these cases in this area of the lava, turning the crank bearings 29 on the latch from one hole to another, the operator adjusts the tracing line 30 at a predetermined height from the actual boundary of the coal-rock in the soil layer.
Mandruta lining mates with 4 robotic arm 6 is made by the patent RF №2130554 from 20.05.1999 (author A. M. Dolinsky) and are designed to expedite and facilitate the work on the erection and fastening drifts in the developed space, because of the high speeds podvigina Korotchaevo stope.
Mandruta the support consists of beams 58 I-beam, connected by a longitudinal fingers and resting on the rack 5. On the lateral surfaces of the beams welded tubular guide 59, which moves the self-propelled robot arm 6, which has a mechanical arm with a grip that provides remounting and tra is sportivnie elements of face lining, and wendroth beams to expedite and facilitate the work on the self-Assembly androutsou line, mounting and Dismounting of the elements of face lining, and can also be used for transporting and reinstalling Prosecco lining (weighing only 3.5 t with a width of 1000 mm) to accelerate the remounting of the entire complex from one stope in the other, when remounting of the complex from one face to another. To perform these works all these elements (beams androutsou lining and Polosatiy lining) supplied with cylindrical shanks in size to capture the mechanical hand of the robot arm.
The support mate works in the following way. As podvigina stope in the developed space is being built ventilation and conveyor drift when developing the first excavation of the strip of figure 1. While the robot arm assembling the top and side of the legs face metallography, as well as the self-Assembly of beams androutsou lining. When developing the second, third and following excavation of the bands in figure 2 in the developed space is being built only a strip of roadway, as well as the ventilation drift is used, reused, conveyor drift the previous strip. This drift when podviganiya slaughter extinguished with some delay to the remote control and magnetic station 7, then Rob the t-manipulator removes the first bottom legs arched gate roof support and then another beam androutsou lining and extracts from Zavala rest metallograph. The ventilation passage of the second robot arm performs the above-described construction of the gate arches and self-Assembly of beams androutsou lining. The length androutsou line, which is needed to power the gate roof support should be determined by the size of the rock pressure and may be of the order of 50-100 m In this line of andruchow as the caterpillar moves without unloading the roof continuously in the direction of podvigina stope due to installation of new beams on the one hand, dismantling and transportation of the beams on the other hand androutsou chain.
A generator of electricity or gas 8 is for the use of coal by appointment by burning it under the ground instead of transporting it by pipeline and haulage drifts, the trunk and the ground rail to consumers, sometimes located in remote regions of the country.
Provide different ways of combustion or use of coal, as well proven, and the newest, used in space or in the defence industry, but inevitably introduced in the future in all areas of industry and national economy.
Option generate electricity using the generator, turn the steam turbine is the most is e-tested and technically advanced. It consists of a movable wheeled trolleys 60 trains, including the feeder, coal crusher, mill for turning coal into powder screw feeder pulverized fuel injectors of the furnace, the water-tube boiler 61 for the production of superheated steam in the pipes 62, smoke pipes, pipe for gases 63 and the pipe 64 to release waste steam after the steam turbine, cooling the annular cavity 65 with the cooling water supplied from the conveyor drift and used to power the boiler and to supply water monitor 66 that perform ejection of slag and fly ash as a partial bookmarks 67 goaf.
The second variant of the generator consists of thermoelectric elements currently used in spacecraft, where the heat source is a nuclear heaters, and electricity produce thermoelectric elements, consisting either of a pair of heated dissimilar metals, or of semiconductor transitions with corresponding characteristics. However, for earth conditions the size and weight are not important, so the implementation of this device is greatly simplified.
Third, the most promising variant of the generator is to replace the idea of underground gasification of coal by decomposition at high temperature steam boiler water into oxygen and in dorog with oxygen to enhance combustion of pulverized coal and the grant-mountain hydrogen is a valuable gaseous ecological fuel for cars.
The advantage of underground coal combustion is removing the problem of transport of coal in parts of railway transportation over long distances, which convert coal industry in unprofitable branch compared to the oil and gas industry. Note the large areas of the country, which, in addition, has a huge, over 1000 billion tonnes of coal reserves, enough not to 50-60 years, both for oil and gas, and for 500-600 years.
The second advantage is the removal of a problem of insufficient performance of underground transport in old mines, not designed for high performance purification equipment. This problem, unfortunately, is now solved by closing (restructuring) in old mines and mines with the geological disturbances, although there is not yet removed all existing and prepared for the extraction of coal from the lower horizons.
With the closure of these mines leaves a large number of hereditary miners in towns and villages where there are no other companies to use labour force unemployed miners.
1. The method of mining and underground coal use, including treatment and breaking nabalco coal, mounting and control the roof and transporting coal along the face to the roadway, characterized in that the drift in the mobile generator coal grind into dust for the intensity of the active burning it using nozzles in the furnace water boiler, where is high temperature steam (about 1400° (C)sufficient for the decomposition of water into oxygen and hydrogen, to produce their separation, after which the oxygen is supplied back to the injectors, and hydrogen produce mountain hoses and pipes laid on the roadway and the shaft, thereby eliminate the transportation of coal at the mine, the barrel and on the earth's surface by rail to distant consumers of coal.
2. A highly effective way of developing impaired coal seams short faces, including breaking and nabalco coal face conveyor, the fastening of the roof behind the harvester, shifting of the rod conveyor and shields in the direction of podvigina stope, management of roof collapse and partial tab, wherein the recess of the coal produced short curved faces long strips along the strike, direct the course without advanced drilling drifts, keeping in mined-out space and reuse ventilation and conveyor drifts, equipped with mounting robot manipulators, with attachment for harvester automatically operating visors lining without unloading and shifting of the sections in the zone of excavation coal, and the blasting and transportation of coal to produce high-speed combined harvester and curved conveyor loader, serves them the coal face conveyor or directly on the underground located on the roadway a gas generator or generator power.
3. Underground electricity generator including a furnace for burning coal and the energy Converter of heat into electric energy, characterized in that it is made wheeled and moved on rails laid on one side of a given roadway section is equipped with a crusher to the mill and furnace, which burns coal and methane obtained after the vent blowing air through the longwall face, and the resulting combustion slag and ash thrown into the goaf monitor and jets of water supplied with conveyor drift and feeding the boiler, which produces steam to the steam turbine associated with the rotor electric generator.
4. Underground generator (option), characterized in that it is made in the form of a mobile furnace, moving on the roadway for clearing face, and includes a large number of thermoelectric elements electrically coupled in parallel and serial groups and thermally contacting with one side of the hot gases, and on the other hand - with cooling water which is supplied through the passage to cool the external circuit of the generator and the water supply of the monitor used for flushing slag and ash content in the mined-out area.
5. Downhole scraper conveyor, including welded pans in United m is waiting for a front and rear profiles, scraper chain, consisting of lengths of chain, removable scraper and conveyor drive, characterized in that the pans are made with a step on the front face of the profile is greater than at the rear, forming a common line in a plane, a curved towards the bottom with constant curvature.
6. Welded pan scraper conveyor, including two 3-profiles and horizontal sheets, characterized in that it is provided with two horizontal shelves with vertical holes with the right step for mounting attachments with goaf side of the conveyor and a horizontal shelf for reverse hook skis combine and support of the toe of shares with face side of the conveyor.
7. Double chain scraper conveyor, curved in the horizontal plane with contiguous branches of the circuit, including downhole and dammed branches, wherein the branches have a circuit different step, and the step chain downhole branches to step chain dammed branches is equal to the ratio of the radii of the conveyor along the axis of the downhole branches to the radius of the conveyor along the axis of the dam branch of the chain.
8. The way to manage complex for deserted dredging of coal, including motor control and cutting Shearer control hydraulic cylinder raising and lowering of the cutting drum in hypsometry layer, the control jacks of shields is La fastening of the roof for operating the harvester and for advancing shields and conveyor, characterized in that the first operations are performed remotely via a power cable from the Central control and Central magnetic stations located on the roadway, and control of the hydraulic cylinder on hypsometry layer is produced hydraulically by the program using located on the harvester witness set, the control lever which interacts with the tracing line attached to the rod conveyor and custom periodically engineer complex with trailers combine at follow-tuning the passage with the visual observation of the excavation of coal relative to the coal - rock, and control of the fastening of the roof behind the harvester produced automatically by the release swivel screens lining pressing his fist truck on the drivers line the hydraulic blocks of shields mounted on the rod conveyor, and at follow-tuning travel possible periodic stops combine with remote manual control complex, located on the trailing bogie of the harvester, which involves managing an electric cable with a Central ELECTROPULT complex, and hydraulic hoses with a witness set of the processor and is equipped with air hose clean dust-free air from the fan harvester in the area of the truck, the front p is rediskoy rod and three groups of shields produced remotely from a Central control panel for mains supply rod, highways vidivici groups of sections and the main thrust of the racks.