CN110107298B - Coal mining, selecting, filling and reserving integrated mining system - Google Patents
Coal mining, selecting, filling and reserving integrated mining system Download PDFInfo
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- CN110107298B CN110107298B CN201910525978.2A CN201910525978A CN110107298B CN 110107298 B CN110107298 B CN 110107298B CN 201910525978 A CN201910525978 A CN 201910525978A CN 110107298 B CN110107298 B CN 110107298B
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- conveying belt
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- 239000003245 coal Substances 0.000 title claims abstract description 178
- 238000005065 mining Methods 0.000 title claims abstract description 140
- 238000011049 filling Methods 0.000 title claims abstract description 86
- 238000003860 storage Methods 0.000 claims abstract description 12
- 239000011435 rock Substances 0.000 claims abstract description 6
- 238000003825 pressing Methods 0.000 claims description 19
- 238000000926 separation method Methods 0.000 claims description 18
- 238000002347 injection Methods 0.000 claims description 17
- 239000007924 injection Substances 0.000 claims description 17
- 239000000428 dust Substances 0.000 claims description 14
- 238000012216 screening Methods 0.000 claims description 9
- 239000002817 coal dust Substances 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims 2
- 230000010354 integration Effects 0.000 claims 1
- 238000007599 discharging Methods 0.000 description 8
- 239000010878 waste rock Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3416—Sorting according to other particular properties according to radiation transmissivity, e.g. for light, x-rays, particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/36—Sorting apparatus characterised by the means used for distribution
- B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
- E21F15/005—Methods or devices for placing filling-up materials in underground workings characterised by the kind or composition of the backfilling material
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Remote Sensing (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Sorting Of Articles (AREA)
Abstract
The invention provides a coal mine mining, selecting, filling and reserving integrated mining system, which belongs to the technical field of coal mine mining and comprises a mining device, a coal gangue sorting device, a gangue backfilling device and a gangue storage bin, wherein the mining device is used for mining raw coal; the gangue sorting device is connected with the mining device through a raw coal conveyer belt and is used for being connected with a lifting device arranged in a lifting vertical shaft through a lump coal conveyer belt; the gangue backfilling device is arranged behind the mining device and is connected with the gangue sorting device through a gangue conveying belt and used for backfilling the gangue to the goaf to form a filling body; chu Gancang are used for storing gangue. According to the invention, the coal gangue can be directly sorted under the mine and the selected gangue is backfilled through the cooperation of the devices, so that the gangue is prevented from being lifted to the ground, the occupation of the conveying capacity of the lifting device is reduced, the gangue can be quickly backfilled before the rock mass is deformed, the ground surface collapse is avoided, the occupation of the gangue to the ground is avoided, and the potential safety hazard of the gangue is avoided.
Description
Technical Field
The invention belongs to the technical field of coal mining, and particularly relates to a coal mining, selecting, filling and retaining integrated mining system.
Background
A coal mine is one of the main mines of a company, and the production capacity is currently checked to be 180 ten thousand t/a. The current stage faces the following problems: ① The method has the advantages that the ground gangue is damaged, the gangue is processed in a way of outward transportation, sorting and accumulation of the gangue, the processing way can occupy a large amount of transportation capacity of a lifting shaft, so that the gangue wastes a large amount of land resources, the gangue discharge site is nearly saturated, meanwhile, the gangue has potential safety hazards of spontaneous combustion, landslide and the like, and leaching water can seriously damage the environment of a mining area; ② The problem of subsidence of the earth surface is remarkable, and as the coal mining mode of the coal mine is a full caving method, the earth surface is subsided, subsided and farmland is damaged to different degrees, and the subsided area is about 2300 mu; ③ The underground aquifer is destroyed, the coal mining leads to the aquifer to be distorted and broken, the underground water system is destroyed, and the water permeability accident is easy to occur.
Disclosure of Invention
The invention aims to provide a coal mining, selecting, filling and reserving integrated mining system, which aims to solve the technical problems that in the prior art, the coal mining produces a large amount of land occupation and danger is easy to cause surface subsidence.
In order to achieve the above purpose, the invention adopts the following technical scheme: the mining, separating, filling and reserving integrated mining system comprises a mining device, a coal gangue sorting device, a gangue backfilling device and a gangue storage bin, wherein the mining device is used for mining raw coal to form a goaf; the gangue sorting device is connected with the mining device through a raw coal conveyer belt and is used for being connected with a lifting device arranged in a lifting vertical shaft through a lump coal conveyer belt; the gangue backfilling device is arranged behind the mining device and is connected with the gangue sorting device through a gangue conveying belt and used for backfilling the gangue to the goaf to form a filling body; chu Gancang is arranged between the gangue sorting device and the gangue backfilling device and is used for storing gangue.
Further, in the coal mining, selecting, filling and retaining integrated mining system, the coal mining, selecting and filling and retaining integrated mining system further comprises a filling and retaining device, wherein the filling and retaining device is used for forming a roadway in the filling body and comprises a hydraulic support for supporting a coal wall and a grouting device for grouting the side part of the filling body.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the mining and reserving integrated mining system further comprises a raw coal screening device, wherein the raw coal screening device is used for screening lump coal and coal scraps, the feeding end is connected with the mining device, the lump coal discharging end is connected with the coal gangue sorting device, and the coal scraps discharging end is connected with the lifting device through a coal scraps conveying belt.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the gangue storage bin comprises a gangue groove, a gangue crusher and a rake loader, and a slope is arranged on one side of the gangue groove and used for storing gangue; the gangue crusher is arranged at the upper part of the gangue groove and is connected with the front section of the gangue conveying belt; the rake loader is arranged in the gangue groove and is connected with the rear section of the gangue conveying belt. Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the gangue sorting device comprises a raw coal conveying belt, a vibration coal feeder, a gangue sorting machine, a lump coal conveying belt, a gangue conveying belt, a chute and a slideway, wherein the raw coal conveying belt is used for conveying raw coal; the gangue separator comprises a separation conveyer belt arranged below the raw coal conveyer belt, an X-ray detector arranged above the separation conveyer belt, an air injection mechanism arranged at one side of the separation conveyer belt and used for injecting air to the separation conveyer belt, and a first controller electrically connected with the X-ray detector and the air injection mechanism respectively; one end of the lump coal conveyer belt is arranged below the output end of the sorting conveyer belt; the gangue conveying belt is arranged on the other side of the sorting conveying belt; the vibration coal feeder is arranged between the raw coal conveying belt and the gangue separator and is used for receiving raw coal conveyed by the raw coal conveying belt and uniformly conveying the raw coal to the gangue separator; the upper part of the chute is arranged below the vibration coal feeder, and the lower part of the chute is arranged above the lump coal conveyer belt; the slide way is arranged above the chute and is in sliding connection with the vibration coal feeder; the gangue conveying belt, the lump coal conveying belt and the sorting conveying belt are arranged in parallel, and the running directions of the lump coal conveying belt and the sorting conveying belt are opposite.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, a separation plate is arranged on the separation conveying belt, and an included angle alpha is formed between the separation plate and the advancing direction of the separation conveying belt; the included angle alpha is 45-90 degrees; a first baffle is arranged on one side of the gangue conveying belt, which is close to the sorting conveying belt, and the first baffle is connected with the sorting conveying belt; a second baffle is arranged on one side of the gangue conveying belt away from the sorting conveying belt, and the upper part of the second baffle is higher than the sorting conveying belt; the lower part of the second baffle is bent inwards and is positioned at the upper part of the gangue conveying belt; the gangue sorting device also comprises a dust remover arranged at one side of the output end of the sorting conveyer belt; the dust remover comprises a dust filtering mechanism and an air compressor, and the air inlet end of the air compressor is connected with the dust filtering mechanism; the air injection mechanism comprises an air injection pipe connected with the air outlet section of the air compressor and an electric control valve which is arranged on the air injection pipe and is electrically connected with the first controller.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the gangue backfilling device comprises a gangue pushing device, and the gangue pushing device is connected with the gangue conveying belt and used for filling gangue in the goaf and pushing the gangue to form a filling body.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the gangue pushing device comprises a support, a top plate, a supporting cylinder group, a pushing cylinder, a pushing adjusting cylinder, a pushing seat, a discharging opening, a discharging cylinder and a discharging conveying belt, wherein the support is used for being in contact with a working surface; the top plate is used for supporting the upper rock mass; the supporting cylinder group is arranged between the support and the top plate and used for supporting the top plate; one end of the pushing oil cylinder is hinged with the support; one end of the pushing and pressing adjusting oil cylinder is hinged with the top plate, and the other end of the pushing and pressing adjusting oil cylinder is connected with the middle part of the pushing and pressing oil cylinder; the pushing seat is arranged at the other end of the pushing oil cylinder and used for pushing gangue; the blanking opening is arranged at the lower part of the top plate, is positioned above the pushing seat and is connected with the top plate in a sliding way; two ends of the blanking cylinder are respectively connected with the blanking opening and the top plate and used for driving the blanking opening to slide on the top plate; the unloading conveyer belt is established in roof lower part, and the output is connected with the feed opening, and the input is connected with waste rock conveyer belt.
Further, in the coal mining, selecting, filling and reserving integrated mining system, the pushing seat comprises a first pushing panel hinged with the pushing oil cylinder and a pushing seat adjusting oil cylinder with two ends respectively hinged with the pushing oil cylinder and the first pushing panel; the pushing seat also comprises a second pushing panel, a buffer layer and a vibrator, wherein the second pushing panel is arranged in parallel with the first pushing panel, the buffer layer is arranged between the first pushing panel and the second pushing panel, and the vibrator is arranged on the second pushing panel; the buffer layer comprises an elastic block body and a spring arranged in the elastic block body.
Further, in the coal mine mining, selecting, filling and reserving integrated mining system, the gangue pushing device further comprises a stroke sensor, a pressure sensor, an angle sensor and a second controller, wherein the stroke sensor is arranged on the pushing oil cylinder and used for detecting the elongation of the pushing oil cylinder; the pressure sensor is arranged on the pushing oil cylinder and used for detecting the pressure of the pushing oil cylinder; the angle sensor is used for detecting an included angle between the pushing oil cylinder and the support; the second controller is electrically connected with the vibrator, the stroke sensor, the pressure sensor, the angle sensor, the supporting oil cylinder group, the pushing oil cylinder and the pushing adjusting oil cylinder respectively.
The coal mining, selecting, filling and reserving integrated mining system provided by the invention has the beneficial effects that: compared with the prior art, the invention can directly sort the gangue under the mine and backfill the selected gangue through the cooperation of the mining device, the gangue sorting device, the gangue backfill device and the gangue storage bin, so that the gangue is prevented from being lifted to the ground, the occupation of the conveying capacity of the lifting device is reduced, the gangue can be quickly backfilled before the rock mass is deformed, the earth surface collapse is avoided, the land occupation of the gangue is avoided, and the potential safety hazard of the gangue is avoided.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a working flow of a coal mining, selecting, filling and reserving integrated mining system provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a mining area and a filling area of a coal mining, selecting and filling integrated mining system arrangement according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram of a mining, selecting, filling and reserving integrated mining system for a coal mine according to an embodiment of the present invention;
Fig. 4 is a schematic structural diagram of a gangue storage bin of the coal mine mining, selecting and filling integrated mining system provided by the embodiment of the invention;
Fig. 5 is a schematic diagram of a top view structure of a gangue sorting device of a coal mine mining, selecting, filling and reserving integrated mining system according to an embodiment of the present invention;
Fig. 6 is a schematic side view structure diagram of a gangue sorting device of a coal mine mining, selecting, filling and reserving integrated mining system provided by the embodiment of the invention;
Fig. 7 is a schematic side view of a gangue pushing device of a coal mine mining, selecting, filling and reserving integrated mining system according to an embodiment of the invention.
Wherein, each reference sign in the figure:
100-mining means;
200-gangue sorting device; 210-raw coal conveyor belt; 220-vibrating coal feeder; 230-gangue separator; 231-sorting conveyor belt; a 232-X-ray detector; 233-an air jet mechanism; 234-a first controller; 235-separator; 236-gas lance; 237-electric control valve; 240-lump coal conveyor belt; 250-gangue conveying belt; 260-chute; 270—a slideway; 280-dust remover; 281-dust filtering mechanism; 282-air compressor; 291-first baffle; 292-a second baffle;
300-gangue backfill device; 310-supporting seat; 320-top plate; 330-supporting the cylinder group; 340-pushing and pressing oil cylinders; 350-pushing and pressing an adjusting oil cylinder; 360-pushing and pressing the seat; 361-pushing and pressing seat adjusting oil cylinder; 362-a first push panel; 363-buffer layer; 364-a second push panel; 365-shaker; 366-elastic blocks; 367-springs; 370-a feed opening; 371-blanking cylinder; 380-blanking conveying belt; 391—a travel sensor; 392-a pressure sensor; 393-angle sensor; 394-a second controller;
400-lifting device;
500-raw coal screening device; 510-coal dust conveying belt;
600-gangue storage bin; 610-gangue pit; 620-gangue crusher; 630-raking the loader;
700-lifting shaft; 710—roadway; 720-filling body; 730-gangue wall; 740-coal seam.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, a description will now be given of a mining, selecting, filling and reserving integrated mining system for coal mines. The coal mine mining, separating, filling and reserving integrated mining system comprises a mining device 100, a coal gangue sorting device 200, a gangue backfilling device 300 and a gangue storage bin 600, wherein the mining device 100 is used for mining raw coal to form a goaf; the gangue sorting device 200 is connected with the mining device 100 through a raw coal conveyer belt 210 and is used for being connected with a lifting device 400 arranged in a lifting shaft 700 through a lump coal conveyer belt 240; the gangue backfilling device 300 is arranged behind the mining device 100 and connected with the gangue sorting device 200 through the gangue conveying belt 250, and is used for backfilling the gangue into the goaf to form a filling body; the gangue storage bin 600 is arranged between the gangue sorting device 200 and the gangue backfilling device 300, and is used for storing the gangue so as to balance the supply and the demand of gangue sorting and filling.
When the coal mine is mined, raw coal mined by the mining device 100 is conveyed to the gangue sorting device 200, gangue is separated from coal blocks, then the gangue is conveyed back to the gangue backfilling device 300, a goaf is filled, the coal blocks are conveyed to the lifting device 400, and the coal blocks are conveyed to the ground through the lifting shaft 700.
Compared with the prior art, the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention has the advantages that the coal gangue can be directly sorted under the mine and backfilled through the cooperation of the mining device 100, the coal gangue sorting device 200, the gangue backfilling device 300 and the gangue storage bin 600, the gangue is prevented from being lifted to the ground, the occupation of the lifting device 400 is reduced, the gangue can be quickly backfilled before the rock mass is deformed, the ground subsidence is avoided, the land occupation of the gangue is avoided, and the potential safety hazard of the gangue is avoided.
Referring to fig. 1 to 3, as a specific embodiment of the coal mine mining, selecting, filling and retaining integrated mining system provided by the invention, the coal mine mining, selecting, filling and retaining integrated mining system further comprises a filling and retaining device, wherein the filling and retaining device is used for forming a roadway in a filling body and comprises a hydraulic support for supporting a coal wall and a grouting device for grouting the side part of the filling body.
In a specific embodiment of the invention, the coal mining, selecting, filling and retaining integrated mining system comprises four subsystems of a coal mining system (namely 'mining'), a coal and gangue sorting system (namely 'selecting'), a gangue filling system (namely 'filling') and a self-filling and retaining system (namely 'retaining'), wherein the coal mining system comprises the mining device 100, the coal and gangue sorting system comprises the coal and gangue sorting device 200, the gangue filling system comprises the gangue backfilling device 300, and the self-filling and retaining system comprises the gob-filling and retaining device and also comprises other auxiliary facilities such as various conveying belts and gangue storage bins 600.
The coal mine mining, selecting, filling and retaining integrated mining system finishes gangue sorting underground, conveys the sorted gangue to a working surface, fills the goaf, and simultaneously carries out gob-side entry retaining so as to realize non-coal pillar mining and achieve the purposes of underground gangue treatment and ecological environment protection.
The coal mining system is used for coal stoping, and the gangue filling system is positioned behind the hydraulic support of the coal mining system and is used for filling solid fillers such as gangue and the like into a goaf at the rear part of the working face. The gangue filling system is connected with the gangue sorting system through a gangue conveying belt. The gangue separation system is used for separating coal from gangue from underground raw coal, the separated coal is conveyed to the ground through the underground conveying system, and the separated gangue is conveyed to the working surface for in-situ filling. The mining, selecting, filling and reserving integrated mining system can directly separate coal gangue underground, underground sorting gangue and expanding gangue are filled in situ into a goaf at the rear part of a working face, so that the gangue is not lifted, and the problems of cost increase, transportation capacity occupation, environmental destruction and the like caused by the original ground treatment of the gangue of a coal mine are effectively solved; the goaf of traditional significance is eliminated, the settlement of overburden is quantitatively controlled, a series of safety and environmental problems caused by the 'three-lower' exploitation of coal are solved, the subsidence of the ground surface is effectively controlled, the coal resources in villages are released, and a large amount of moving cost is saved; the novel gob-side entry retaining technology is utilized to reduce the maintenance quantity of the tunnel and the problem of continuous production, improve the recovery rate of mine resources and prolong the service life of the mine.
Referring to fig. 1 to 3, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention, the coal mine mining, selecting, filling and reserving integrated mining system further includes a raw coal screening device 500, the raw coal screening device 500 is used for screening lump coal and coal dust, a feeding end is connected with the mining device 100, a lump coal discharging end is connected with the gangue sorting device 200, and a coal dust discharging end is connected with the lifting device 400 through a coal dust conveying belt 510.
Referring to fig. 4, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention, in the foregoing coal mine mining, selecting, filling and reserving integrated mining system, a gangue storage bin 600 includes a gangue trough 610, a gangue crusher 620 and a rake loading machine 630, and a slope is arranged at one side of the gangue trough 610 for storing gangue; the gangue crusher 620 is disposed at an upper portion of the gangue pit 610 and connected to a front section of the gangue transport belt 250; the raking machine 630 is disposed within the refuse chute 610 and is connected to the rear section of the refuse conveyor belt 250. Referring to fig. 5 and fig. 6 together, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention, a coal gangue sorting device 200 includes a raw coal conveyor belt 210, a gangue sorter 230, a lump coal conveyor belt 240 and a gangue conveyor belt 250, where the raw coal conveyor belt 210 is used for conveying raw coal; the gangue separator 230 comprises a separation conveyor 231 arranged below the raw coal conveyor 210, an X-ray detector 232 arranged above the separation conveyor 231, an air injection mechanism 233 arranged at one side of the separation conveyor 231 and used for injecting air to the separation conveyor 231, and a first controller 234 electrically connected with the X-ray detector 232 and the air injection mechanism 233 respectively; one end of the lump coal conveyer belt 240 is arranged below the output end of the sorting conveyer belt 231; the gangue transport belt 250 is provided at the other side of the sorting transport belt 231.
In the coal gangue sorting, the raw coal conveyor 210 conveys raw coal onto the sorting conveyor 231, the X-ray detector 232 recognizes the gangue therein and transmits a signal to the first controller 234, and the first controller controls the air injection mechanism 233 to inject air to blow the gangue onto the gangue conveyor 250 on one side of the sorting conveyor 231, while lump coal remains on the sorting conveyor 231 until being conveyed to one end of the sorting conveyor 231 and falls onto the lump coal conveyor 240.
Compared with the prior art, the gangue sorting device 200 provided by the invention has the advantages that the raw coal conveyer belt 210, the gangue sorter 230, the lump coal conveyer belt 240 and the gangue conveyer belt 250 are matched, the X-ray detector 232 of the gangue sorter 230 is used for detecting gangue and sorting the gangue through the air injection mechanism 233, the whole device is simple in structure and convenient to operate, only occupies the widths of the two conveyer belts, has extremely strong adaptability to narrow space under a mine, can be directly arranged in a roadway of the mine, and is convenient for sorting the gangue and the coal under the mine.
Referring to fig. 5 and fig. 6 together, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the present invention, the coal gangue sorting device 200 further includes a vibration coal feeder 220, a chute 260 and a slideway 270, wherein the vibration coal feeder 220 is disposed between the raw coal conveyor 210 and the gangue sorter 230, and is used for receiving raw coal conveyed by the raw coal conveyor 210 and uniformly conveying the raw coal to the gangue sorter 230; the upper part of the chute 260 is arranged below the vibration coal feeder 220, and the lower part is arranged above the lump coal conveyer belt 240; the slide way 270 is arranged above the chute 260 and is in sliding connection with the vibration coal feeder 220; the gangue transport belt 250, the lump coal transport belt 240 and the sorting transport belt 231 are arranged in parallel with each other, and the running directions of the lump coal transport belt 240 and the sorting transport belt 231 are opposite.
When the gangue separator 230 needs to be overhauled, the vibration coal feeder 220 can be driven to be separated from the raw coal conveying belt 210, so that raw coal on the raw coal conveying belt 210 directly falls on the lump coal conveying belt 240 and is conveyed to a well.
Referring to fig. 5 and fig. 6 together, as a specific embodiment of the coal mining, selecting, filling and reserving integrated mining system provided by the present invention, a separator 235 is disposed on a sorting conveyor 231, and an included angle α is formed between the separator 235 and the advancing direction of the sorting conveyor 231; the included angle alpha is 45-90 degrees, so that the waste rock can more accurately fall on the waste rock conveying belt 250, the waste rock is prevented from being ejected and piled on one side of the waste rock conveying belt 250, and the waste rock can rapidly move along with the waste rock conveying belt 250, and meanwhile, the width of each conveying belt is saved; a first baffle 291 is arranged on one side of the gangue conveyor belt 250 close to the sorting conveyor belt 231, and the first baffle 291 is connected with the sorting conveyor belt 231; a second baffle 292 is arranged on one side of the gangue conveyor belt 250 away from the sorting conveyor belt 231, and the upper part of the second baffle 292 is higher than the sorting conveyor belt 231; the lower portion of the second shutter 292 is bent to the inside and is positioned at the upper portion of the gangue transport conveyer 250 so that the gangue falls on; the gangue separator 200 further comprises a dust remover 280 arranged at one side of the output end of the separation conveyer 231; the dust remover 280 comprises a dust filtering mechanism 281 and an air compressor 282 with an air inlet end connected with the dust filtering mechanism 281; the air injection mechanism 233 includes an air injection tube 236 connected to an air outlet section of the air compressor 282 and an electrically controlled valve 237 disposed on the air injection tube 236 and electrically connected to the first controller 234.
Referring to fig. 5 and fig. 6 together, as a specific embodiment of the mining, selecting, filling and reserving integrated mining system for coal mine provided by the present invention, the gangue backfill device 300 includes a gangue pushing device, and the gangue pushing device is connected to the gangue conveyor 250, and is used for filling the gangue in the goaf and pushing the gangue to form a filling body.
Referring to fig. 7, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention, the gangue pushing device comprises a support 310, a top plate 320, a supporting cylinder group 330, a pushing cylinder 340, a pushing and adjusting cylinder 350, a pushing seat 360 and a discharging opening 370, wherein the support 310 is used for contacting a working surface; the top plate 320 is used for supporting an upper rock mass; the support cylinder group 330 is disposed between the supporter 310 and the top plate 320 for supporting the top plate 320; one end of the pushing cylinder 340 is hinged with the support 310; one end of the pushing and pressing adjusting oil cylinder 350 is hinged with the top plate 320, and the other end is connected with the middle part of the pushing and pressing oil cylinder 340; the pushing seat 360 is arranged at the other end of the pushing cylinder 340 and is used for pushing gangue; the feed opening 370 is provided at a lower portion of the top plate 320 and above the pressing seat 360.
When the gangue is filled and piled up, the pushing seat 360 is separated between the gangue filling body and the supporting cylinder group 330 of the hydraulic support, after the gangue falls to the outer side of the pushing seat 360 from the blanking opening 370, the pushing cylinder 340 is driven to push the gangue, the pushing adjusting cylinder 350 is driven to adjust the angle of the pushing seat 360, after the gangue is pushed and stabilized, the pushing cylinder 340 and the pushing adjusting cylinder 350 are driven to retract the pushing seat 360, the gangue continues to fall to the outer side of the pushing seat 360 from the blanking opening 370, and the steps are repeated.
Compared with the prior art, the gangue pushing device provided by the invention can realize the pushing of the gangue pile body through the mutual matching of the support 310, the top plate 320, the supporting cylinder group 330, the pushing cylinder 340, the pushing adjusting cylinder 350, the pushing seat 360 and the blanking opening 370, so that the gangue pile body can be stably filled, the operation is simple and convenient, meanwhile, the pushing seat 360 can avoid the gangue from falling down, the supporting cylinder group 330 is damaged, and the safety protection effect on the hydraulic support can be realized.
Referring to fig. 7, as a specific embodiment of the coal mine mining, selecting, filling and retaining integrated mining system provided by the invention, in the gangue pushing device, a feed opening 370 is slidably connected with a top plate 320; two ends of the blanking cylinder 371 are respectively connected with the blanking port 370 and the top plate 320 and used for driving the blanking port 370 to slide on the top plate 320; the unloading conveyer 380 is arranged at the lower part of the top plate 320, and the output end is connected with the unloading opening 370, and the input end is connected with the gangue conveyer 250, so that the unloading position can be determined according to the gangue stacking condition.
Referring to fig. 7, as a specific embodiment of the mining, selecting, filling and reserving integrated mining system for coal mine provided by the invention, in the gangue pushing device, a pushing seat 360 includes a first pushing panel 362 hinged with a pushing cylinder 340, and a pushing seat adjusting cylinder 361 with two ends respectively hinged with the pushing cylinder 340 and the first pushing panel 362; the pressing seat 360 further includes a second pressing panel 364 disposed in parallel with the first pressing panel 362, a buffer layer 363 provided between the first pressing panel 362 and the second pressing panel 364, and a vibrator 365 provided on the second pressing panel 364; cushioning layer 363 includes a resilient mass 366 and a spring 367 disposed within resilient mass 366. The vibrator 365 vibrates to facilitate the filling of the gangue more firmly, and the buffer layer 363 can reduce the backward transmission of the vibration, so as to avoid the damage of the pushing cylinder 340 and other components caused by the vibration.
Referring to fig. 7, as a specific embodiment of the coal mine mining, selecting, filling and reserving integrated mining system provided by the invention, the gangue pushing device further includes a stroke sensor 391, a pressure sensor 392, an angle sensor 393 and a second controller 394, wherein the stroke sensor 391 is arranged on the pushing cylinder 340 for detecting the elongation of the pushing cylinder 340; the pressure sensor 392 is disposed on the pushing cylinder 340 for detecting the pressure of the pushing cylinder 340; the angle sensor 393 is used for detecting the included angle between the pushing cylinder 340 and the support 310; the first controller 394 is electrically connected to the vibrator 365, the stroke sensor 391, the pressure sensor 392, the angle sensor 393, the support cylinder group 330, the push cylinder 340, and the push adjustment cylinder 350, respectively. The provision of the travel sensor 391, the pressure sensor 392 and the angle sensor 393 facilitates analysis of the gangue filling effect based on the data collected thereby to determine whether the gangue filling is stable, and also facilitates intelligent control of the other components by the second controller 394.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (6)
1. The utility model provides a coal mine adopts and selects to fill and stays integration exploitation system which characterized in that includes:
a mining device (100) for mining raw coal to form a goaf;
the gangue sorting device (200) is connected with the mining device (100) through a raw coal conveying belt (210) and is used for being connected with a lifting device (400) arranged in a lifting shaft (700) through a lump coal conveying belt (240);
The gangue backfilling device (300) is arranged behind the mining device (100) and is connected with the gangue sorting device (200) through a gangue conveying belt (250) and used for backfilling gangue to the goaf to form a filling body; and
Chu Gancang (600) arranged between the gangue sorting device (200) and the gangue backfilling device (300) and used for storing gangue;
The gangue storage bin (600) comprises:
a gangue groove (610), one side of which is provided with a slope for storing gangue;
The gangue crusher (620) is arranged at the upper part of the gangue groove (610) and is connected with the front section of the gangue conveying belt (250); and
The raking machine (630) is arranged in the gangue groove (610) and is connected with the rear section of the gangue conveying belt (250);
the coal gangue sorting apparatus (200) includes:
a raw coal conveyor belt (210) for conveying raw coal;
the gangue separator (230) comprises a separation conveying belt (231) arranged below the raw coal conveying belt (210), an X-ray detector (232) arranged above the separation conveying belt (231), an air injection mechanism (233) arranged on one side of the separation conveying belt (231) and used for injecting air to the separation conveying belt (231), and a first controller (234) electrically connected with the X-ray detector (232) and the air injection mechanism (233) respectively;
one end of the lump coal conveyer belt (240) is arranged below the output end of the sorting conveyer belt (231);
the gangue conveying belt (250) is arranged on the other side of the sorting conveying belt (231);
a vibration coal feeder (220) arranged between the raw coal conveyor belt (210) and the gangue separator (230);
A chute (260) with an upper part arranged below the vibration coal feeder (220) and a lower part arranged above the lump coal conveyer belt (240); and
The slideway (270) is arranged above the chute (260) and is in sliding connection with the vibration coal feeder (220);
The gangue conveying belt (250), the lump coal conveying belt (240) and the sorting conveying belt (231) are arranged in parallel, and the running directions of the lump coal conveying belt (240) and the sorting conveying belt (231) are opposite;
the gangue backfill device (300) comprises:
The gangue pushing device is connected with the gangue conveying belt (250) and used for filling the gangue in the goaf and pushing the gangue to form a filling body;
The gangue pushing device comprises:
a support (310) for contact with the work surface;
a roof (320) for supporting an upper rock mass;
A support cylinder group (330) provided between the support (310) and the top plate (320) for supporting the top plate (320);
A pushing cylinder (340), one end of which is hinged with the support (310);
One end of the pushing and pressing adjusting oil cylinder (350) is hinged with the top plate (320), and the other end of the pushing and pressing adjusting oil cylinder is connected with the middle part of the pushing and pressing oil cylinder (340);
A pushing seat (360) arranged at the other end of the pushing cylinder (340);
a blanking opening (370) which is arranged at the lower part of the top plate (320) and is positioned above the pushing seat (360) and is in sliding connection with the top plate (320);
The two ends of the blanking cylinder (371) are respectively connected with the blanking opening (370) and the top plate (320) and are used for driving the blanking opening (370) to slide on the top plate (320); and
And the blanking conveying belt (380) is arranged at the lower part of the top plate (320), the output end of the blanking conveying belt is connected with the blanking opening (370), and the input end of the blanking conveying belt is connected with the gangue conveying belt (250).
2. The coal mining, selecting, filling and retaining integrated mining system according to claim 1, further comprising:
the gob-side entry retaining device is used for forming a roadway in the filling body and comprises a hydraulic support for supporting a coal wall and a grouting device for grouting the side part of the filling body.
3. The coal mining, selecting, filling and retaining integrated mining system according to claim 1, further comprising:
Raw coal screening device (500) for screening lump coal and coal dust, and the feed end with mining device (100) are connected, the lump coal discharge end with gangue sorting unit (200) are connected, the coal dust discharge end with hoisting device (400) are connected through coal dust conveyer belt (510).
4. The coal mining, selecting, filling and reserving integrated mining system according to claim 1, wherein a partition plate (235) is arranged on the sorting conveyor belt (231), and an included angle alpha is formed between the partition plate (235) and the advancing direction of the sorting conveyor belt (231); the included angle alpha is 45-90 degrees; a first baffle (291) is arranged on one side, close to the sorting conveyor belt (231), of the gangue conveyor belt (250), and the first baffle (291) is connected with the sorting conveyor belt (231); a second baffle (292) is arranged on one side, far away from the sorting conveyer belt (231), of the gangue conveyer belt (250), and the upper part of the second baffle (292) is higher than the sorting conveyer belt (231); the lower part of the second baffle plate (292) is bent inwards and is positioned at the upper part of the gangue conveying belt (250); the gangue sorting device (200) further comprises a dust remover (280) arranged at one side of the output end of the sorting conveyer belt (231); the dust remover (280) comprises a dust filtering mechanism (281) and an air compressor (282) with an air inlet end connected with the dust filtering mechanism (281); the air injection mechanism (233) comprises an air injection pipe (236) connected with an air outlet section of the air compressor (282) and an electric control valve (237) arranged on the air injection pipe (236) and electrically connected with the first controller (234).
5. The coal mining, selecting, filling and retaining integrated mining system according to claim 1, wherein: the pushing seat (360) comprises a first pushing panel (362) hinged with the pushing oil cylinder (340) and a pushing seat adjusting oil cylinder (361) with two ends respectively hinged with the pushing oil cylinder (340) and the first pushing panel (362); the pushing seat (360) further comprises a second pushing panel (364) arranged in parallel with the first pushing panel (362), a buffer layer (363) arranged between the first pushing panel (362) and the second pushing panel (364), and a vibrator (365) arranged on the second pushing panel (364); the cushioning layer (363) includes an elastic block (366) and a spring (367) disposed within the elastic block (366).
6. The coal mining, selecting, filling and retaining integrated mining system according to claim 5, wherein the gangue pushing device further comprises:
A stroke sensor (391) provided on the push cylinder (340) for detecting the elongation of the push cylinder (340);
A pressure sensor (392) provided on the push cylinder (340) for detecting the pressure of the push cylinder (340);
an angle sensor (393) for detecting an angle between the push cylinder (340) and the holder (310); and
And a second controller (394) electrically connected to the vibrator (365), the stroke sensor (391), the pressure sensor (392), the angle sensor (393), the support cylinder group (330), the push cylinder (340), and the push adjustment cylinder (350), respectively.
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| CN110700835B (en) * | 2019-11-07 | 2021-08-06 | 北京矿冶科技集团有限公司 | Shallow underground mining, selecting and charging integrated system for lead-zinc ores |
| CN111229638A (en) * | 2020-01-19 | 2020-06-05 | 安徽理工大学 | Multichannel scattered queue coal and gangue sorting equipment based on X-ray identification |
| CN111266172A (en) * | 2020-01-22 | 2020-06-12 | 山西鸿太旭飞能源科技有限公司 | Coal gangue underground treatment method |
| CN111894666A (en) * | 2020-07-06 | 2020-11-06 | 中煤能源研究院有限责任公司 | Coal mine underground selective grinding pump-charging integrated gangue slurry filling system and method |
| CN111878163A (en) * | 2020-08-11 | 2020-11-03 | 山西文龙中美环能科技股份有限公司 | Mining, selecting and charging integrated waste rock filling system based on underground wind power waste rock selection |
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| CN109162714A (en) * | 2018-09-27 | 2019-01-08 | 中国矿业大学 | Coal seam group near interval underground, which picks up, fills collaboration recovery method |
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