CN109578054A - The anti-reflection extraction system in coal seam in a kind of drilling - Google Patents
The anti-reflection extraction system in coal seam in a kind of drilling Download PDFInfo
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- CN109578054A CN109578054A CN201811251255.XA CN201811251255A CN109578054A CN 109578054 A CN109578054 A CN 109578054A CN 201811251255 A CN201811251255 A CN 201811251255A CN 109578054 A CN109578054 A CN 109578054A
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- 239000003245 coal Substances 0.000 title claims abstract description 88
- 238000005553 drilling Methods 0.000 title claims abstract description 69
- 238000000605 extraction Methods 0.000 title claims abstract description 48
- 238000001514 detection method Methods 0.000 claims abstract description 78
- 238000012545 processing Methods 0.000 claims abstract description 51
- 238000005422 blasting Methods 0.000 claims abstract description 37
- 238000011010 flushing procedure Methods 0.000 claims abstract description 16
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims abstract description 7
- 239000007924 injection Substances 0.000 claims abstract description 7
- 239000003999 initiator Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims description 78
- 239000002184 metal Substances 0.000 claims description 78
- 229910000831 Steel Inorganic materials 0.000 claims description 34
- 239000010959 steel Substances 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 34
- 238000004080 punching Methods 0.000 claims description 32
- 229910001220 stainless steel Inorganic materials 0.000 claims description 27
- 239000010935 stainless steel Substances 0.000 claims description 27
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 22
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000011946 reduction process Methods 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 14
- 238000004458 analytical method Methods 0.000 claims description 9
- 239000002775 capsule Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 8
- 239000003818 cinder Substances 0.000 claims description 7
- 239000000428 dust Substances 0.000 claims description 7
- 238000004880 explosion Methods 0.000 claims description 7
- 238000001914 filtration Methods 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 230000000740 bleeding effect Effects 0.000 claims description 5
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 239000011083 cement mortar Substances 0.000 claims description 3
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000005086 pumping Methods 0.000 abstract description 20
- 230000035699 permeability Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 4
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- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003034 coal gas Substances 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- 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
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/263—Methods for stimulating production by forming crevices or fractures using explosives
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
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Abstract
The invention discloses a kind of anti-reflection extraction systems in coal seam in drilling, including the hydraulic flushing in hole device being each provided in underground coal mine extraction lane, presplit blasting device, gas drainage device and safety monitoring system, it is followed successively by seat earth from bottom to top at the top of extraction lane, coal seam reservoirs and roof, hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump and water-gas separator, presplit blasting device includes initiator, lead and pvc pipe, gas drainage device includes branch's drainage tube, total drainage tube and gas drainage equipment, safety monitoring system includes detection module, processing module, acquisition module, On-off signal output module and the pipeline valve being arranged on branch's drainage tube.The present invention improves the safety to gas drainage control, can effectively prevent the generation of gas accident, effectively improves gas permeability of coal seam, improves gas pumping effect, is effectively reduced the extraction time, reduces gas safety hidden danger to greatest extent.
Description
Technical field
The present invention relates to technical field of coal exploitation, the anti-reflection extraction system in coal seam in specially a kind of drilling.
Background technique
China's output of coal in 2017 accounts for 46.4% of Gross World Product or so, master of the coal as China up to 34.45 hundred million tons
Topic energy position will not shake within suitable long-term, but the coal mining in China 95% is well work industry, 50% or more coal
Charcoal exploitation is perplexed by the gas with coal association with storage, and Gas Disaster, which has become, restricts the great of China's coal-mine safety and high efficiency
Problem.
As coal mining is developed in depth and breadth, coal seam gas-bearing capacity, gas pressure, crustal stress are gradually increased, coal seam permeability
But it is substantially reduced, especially deep is soft projecting coal bed, and permeability is mostly 10-3—10-4The mD order of magnitude, drilling gas extraction shadow
Sound range is small, the rate of decay is fast, gas drainage difficulty is big.For having the coal seam group of protective coat extracted condition, frequently with
Protective coat extracted technology extraction voltage discharging area coal-bed gas, and to the single hypotonic prominent coal for not having protective coat extracted condition largely
Layer, according to " prevention and treatment coal and gas prominent regulation ", down-hole drilling is taken out coal-bed gas in advance and is become as main gas govenance, but past
Toward the such coal-bed gas of efficient extraction is difficult to because of conventional gas drainage technology, often results in mine and " take out, adopt, digging " proportional imbalance and shadow
Ring mine safety production.To build intrinsically safe mine, the prominent mine of low-permeable height has to put into a large amount of manpower, object
Power, financial resources be used for gas drainage, but due to lack extraction technology breakthrough, cause Mine development to have difficulty in walking, essentially consist in because
Extraction improvement, which is not thorough, leads to that gas exceeding limit is frequent, security risk is serious, gas accident takes place frequently, and it is raw to seriously threaten safety of coal mines
It produces, therefore, how effectively to solve the extraction problem of low-permeability coal seam, Safety of Coal Mine Production is had a very important significance.
Summary of the invention
The purpose of the present invention is to provide a kind of anti-reflection extraction systems in coal seam in drilling, to solve in above-mentioned background technique
The problem of proposition.
In order to solve the above technical problem, the present invention provides following technical solutions: the anti-reflection extraction in coal seam in a kind of drilling
System, including hydraulic flushing in hole device, presplit blasting device, gas drainage device and the safety being each provided in underground coal mine extraction lane
Monitoring system, is followed successively by seat earth, coal seam reservoirs and roof at the top of the extraction lane from bottom to top, on the seat earth
Several blasting boreholes of interlaced arrangement and punching drilling, and the distance between the blasting boreholes and adjacent punching drilling are 3-6m,
The operation end of the hydraulic flushing in hole device is extend into punching drilling, and the operation end of the presplit blasting device extend into explosion brill
In hole, after the punching drilling punching and after blasting boreholes explosion, the extraction end of the gas drainage device extend into punching
In drilling and blasting boreholes；
The hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump and water-gas separator, the brill
Bar upper end be water outlet, lower end is water inlet, and the water outlet of the high pressure water-injection pump is connect with drilling rod water inlet, drilling rod lower end and
The power output end of drilling machine connects, and drilling rod upper end extend into punching drilling and is fixedly connected with drill bit, at punching hell
Sealing is equipped with gas dust packing device, and gas dust packing device is connect by pipeline with water-gas separator inlet；
The presplit blasting device includes initiator, lead and pvc pipe, and steel pipe is equipped at the blasting boreholes mouth, described
Sealing is filled with cement mortar between steel pipe and blasting boreholes, and the pvc pipe upper end is inserted into steel pipe and extend into explosion brill
Inside hole, pvc pipe upper end is filled with emulsion, and 1m is in axial direction provided with detonating capsule, PVC in emulsion
Pipe is being sealed below the last one detonating capsule filled with stemming, and lead is stretched after detonating capsule is connected from pvc pipe lower end
Out；
The gas drainage device includes branch's drainage tube, total drainage tube and gas drainage equipment, branch's drainage tube
It is inserted respectively into punching drilling, total drainage tube will be connect after all branch's drainage tubes parallel connections with gas drainage equipment；
The safety monitoring system includes detection module, processing module, acquisition module, On-off signal output module and sets
The pipeline valve on branch's drainage tube is set, the detection module is used to carry out coal seam reservoirs detection and obtains detection signal,
And the detection signal is input to the processing module；
The detection signal includes one of following signals or a variety of:
Gas flow, gas pressure, gas temperature, methane gas concentration and carbon monoxide gas concentration；
The processing module is used to carry out noise reduction process to the detection signal using Algorithms of Wavelet Analysis to obtain testing number
According to, and the detection data and the security risk parameter standard value range of setting are compared, it generates recognition result and is input to
The On-off signal output module；
The acquisition module is used to acquire the detection signal of the detection module output, if the detection signal is electricity
Pressure or current signal, then the detection signal is filtered, adjustment amplitude, isolation and limited amplitude processing after be input to described in
Processing module；If the detection signal be frequency signal, to the detection signal be filtered and isolation processing after be input to
The processing module；
The On-off signal output module, which is used to generate control signal according to the recognition result, is input to the gas
Pipeline valve in extraction equipment and/or branch's drainage tube；
Pipeline valve in the gas drainage equipment and/or branch's drainage tube is used to be protected according to the control signal
Hold operation or out of service.
Further, the water-gas separator includes collector cabinet, power-driven mechanism, secondary filtration mechanism and vibration
Dynamic sieve mechanism；Collector cabinet is an opposite confined space, and collector cabinet top right side is equipped with air water slag mixture inlet,
Collector cabinet top left side is equipped with bleeding point, and collector cabinet bottom right bottom is successively arranged cinder outlet and coal slime from top to bottom
Outlet, collector cabinet lower-left bottom is equipped with water outlet and water outlet is located at coal slime outlet top.
Further, the vibration screen mechanism is located at top in collector box body, and vibration screen mechanism does not include first not
Rust steel plate and external form are in the metal steel skeleton of rectangular parallelepiped structure, and the metal steel skeleton left and right side passes through stiffness spring and connects
It is connected to triangle skeleton buffer board, the stiffness spring of left and right side is equipped with a row, two triangle skeleton bufferings along the longitudinal direction
Plate is separately fixed at the left and right side of collector cabinet upper inside wall and the triangle skeleton buffer board in left side is located at the three of right side
Below the skeleton buffer board of angle；Metal steel skeleton bottom is equipped with the first metal screen that external form is rectangle, and the first metal screen is right
Side is along close to metal steel skeleton bottom surface right edge, and the first metal screen front side edge length is less than before metal steel skeleton bottom surface
Side edge, the first metal screen are equipped with the first rubber buffer plate being located at immediately below air water slag mixture inlet；First is stainless
Steel plate is located at below the first metal screen and the first stainless steel plate is arranged in parallel with the first metal screen, before the first stainless steel plate
Side edge and rear lateral edge are each attached on collector cabinet wall, and the left side edge of the first stainless steel plate is located at the filter of the first metal
The right side of net left side edge；Metal steel skeleton bottom left and right side are rotatably connected to idler wheel, and two idler wheels roll connection
In the first stainless steel plate upper surface；First stainless steel plate left side edge is equipped with and blocks water baffle, the first stainless steel plate be equipped with close to
Block water the through-hole of baffle.
Further, the power-driven mechanism includes driving motor and vibration pull rod, and driving motor is arranged in collector
Box house, driving motor main shaft key are connected with drive disk, and metal steel skeleton is equipped with fixing seat, and vibration pull rod one end is hinged on
In fixing seat, the vibration pull rod other end is hinged on the bias of drive disk.
Further, the secondary filtration mechanism includes the second metal screen and two resistance coal baffles, the second metal screen
Front side edge edge and rear lateral edge be each attached on collector cabinet wall, the second metal screen is inclined in left-right direction
Below first stainless steel plate and the left side edge of the second metal screen is higher than right edge, and the right edge of the second metal screen is tight
Adjacent cinder exports lower edge；Upper surface is equipped with the second rubber buffer plate on the left of second metal screen；Two resistance coal baffles are located at the
Between one metal screen and the second metal screen, two resistance coal baffle front side edge edges and rear lateral edge are each attached to collector cabinet
On inner wall, up big and down small and transparent taper blanking tube is formed between two resistances coal baffle and collector cabinet walls, is bored
The upper port of shape blanking tube is close to the first metal screen left side edge and positioned at the underface of the first metal screen left side edge, cone
The lower port of shape blanking tube is close to the second metal screen and positioned at the surface of the second rubber buffer plate.
Further, the detection module includes one or more of sensor:
The flow sensor of detection gas flow, the pressure sensor of detection gas pressure, detection gas temperature temperature
Sensor, the firedamp sensor for detecting methane gas concentration and the carbon monoxide transducer for detecting carbon monoxide gas concentration.
It further, further include alarm module, the alarm module is used to generate alarm signal according to the recognition result.
It further, further include display module and/or input module, the display module is for showing the noise reduction process
The detection data and the recognition result afterwards；The input module is used for the security risk parameter standard value range
It is remained operational with the pipeline valve controlled on the gas drainage equipment and/or branch's drainage tube or out of service first
Control command is input to the processing module.
It further, further include communication interface, the communication interface is used for the testing number after the noise reduction process
It is input to host computer according to the recognition result, and the control that the host computer the is inputted gas drainage equipment and/or institute
State that the pipeline valve on branch's drainage tube remains operational or the second control command out of service is input to the processing module.
It further, further include memory module, the memory module is for storing the security risk parameter standard value model
It encloses and the alarm signal.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being:
(1), drilling presplit blasting and hydraulic flushing in hole drilling arranged crosswise are first implemented presplit blasting, then to week by the present invention
The drilling enclosed carries out hydraulic flushing in hole, and explosion can make the loose coal around drilling, generates crack and hydraulic flushing in hole forms crack
It is mutually communicated, is formed around coal bed drilling and intersect fracture network, played the role of to the cracks in coal seam network rebuilding, crack is further
Extension increases Gas Flow channel, improves gas permeability of coal seam, promotes the desorption and discharge of gas, be greatly reduced and blank occur
Band；When punching simultaneously, a large amount of slack coals are gone out, the surrounding medium for forming cave is acutely mobile to duct hole direction, and coal body occurs
The opposite displacement of dilatancy and roof and floor causes the crustal stress in the certain coverage of punching to reduce, and coal seam pressure relief both disappeared
In addition to prominent power, and projecting coal bed property is changed, plays the role of preventing and treating coal and gas prominent in digging operation,
It is few with drilling hole amount, shorten high-efficient gas total extraction time, extraction, tunnelling and coal work safety, coal mining efficiency
The advantages that high.
(2), it is provided with safety monitoring system, by carrying out noise reduction process using Algorithms of Wavelet Analysis to detection signal, and
The detection data obtained after noise reduction process and the security risk parameter standard value range of setting are compared, according to obtained knowledge
Other result controls the pipeline valve in gas drainage equipment and/or branch's drainage tube, due to what is obtained after noise reduction process
Detection data stability is good, and precision is high, improves the safety to gas drainage control, can effectively prevent gas accident
Occur, effectively improve gas permeability of coal seam, improve gas pumping effect, be effectively reduced the extraction time, to greatest extent reduction watt
This security risk.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of water-gas separator in the present invention；
Fig. 3 is the structural block diagram of safety monitoring system in the present invention.
In figure: 1, collector cabinet, 2, air water slag mixture inlet, 3, bleeding point, 4, water outlet, 5, cinder outlet, 6,
Coal slime outlet, the 7, first stainless steel plate, 8, metal steel skeleton, 9, stiffness spring, 10, triangle skeleton buffer board, the 11, first metal
Strainer, the 12, first rubber buffer plate, 13, idler wheel, 14, block water baffle, 15, through-hole, 16, driving motor, 17, vibration pull rod,
18, drive disk, 19, fixing seat, the 20, second metal screen, 21, resistance coal baffle, the 22, second rubber buffer plate, 23, blanking tube,
24, brush plate, 25, hairbrush, 26, barometer, 80, extraction lane, 81, seat earth, 82, coal seam reservoirs, 83, roof.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-Fig. 3 is please referred to, the present invention provides a kind of technical solution: the anti-reflection extraction system in coal seam in a kind of drilling, packet
Include the hydraulic flushing in hole device being each provided in underground coal mine extraction lane 80, presplit blasting device, gas drainage device and safety monitoring
System, 80 top of extraction lane are followed successively by seat earth 81, coal seam reservoirs 82 and roof 83, the coal seam bottom from bottom to top
Several blasting boreholes of interlaced arrangement and punching drilling on plate 81, and the blasting boreholes and adjacent punching the distance between drill and to be
3-6m, the operation end of the hydraulic flushing in hole device are extend into punching drilling, and the operation end of the presplit blasting device is extend into
In blasting boreholes, after the punching drilling punching and after blasting boreholes explosion, the extraction end of the gas drainage device is protruded into
Into punching drilling and blasting boreholes；The hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump and water coal
Gas separating device, the drilling rod upper end are water outlet, and lower end is water inlet, the water outlet and drilling rod water inlet of the high pressure water-injection pump
The power output end of connection, drilling rod lower end and drilling machine connects, and drilling rod upper end, which extend into punching drilling and fixes with drill bit, to be connected
It connects, sealing is equipped with gas dust packing device at punching hell, and gas dust packing device is entered by pipeline and water-gas separator
Mouth connection；The presplit blasting device includes initiator, lead and pvc pipe, is equipped with steel pipe, the steel at the blasting boreholes mouth
Sealing is filled with cement mortar between pipe and blasting boreholes, and the pvc pipe upper end is inserted into steel pipe and extend into blasting boreholes
Inside, pvc pipe upper end are filled with emulsion, 1m are in axial direction provided with detonating capsule, pvc pipe in emulsion
It is filled with stemming being located at sealing below the last one detonating capsule, lead stretches out after detonating capsule is connected from pvc pipe lower end；
The gas drainage device includes branch's drainage tube, total drainage tube and gas drainage equipment, and branch's drainage tube is inserted into respectively
Into punching drilling, total drainage tube will be connect after all branch's drainage tubes parallel connections with gas drainage equipment.
Above-mentioned gas drainage equipment and gas dust packing device are the prior art.
Safety monitoring system includes that detection module, processing module, acquisition module, On-off signal output module and setting exist
Pipeline valve on branch's drainage tube, the detection module are used to carry out coal seam reservoirs detection and obtain detection signal, and will
The detection signal is input to the processing module；The detection signal includes one of following signals or a variety of: gas stream
Amount, gas pressure, gas temperature, methane gas concentration and carbon monoxide gas concentration；The processing module is used to use small echo
Parser carries out noise reduction process to the detection signal and obtains detection data, and the safety of the detection data and setting is hidden
Suffer from parameter standard value range to be compared, generates recognition result and be input to the On-off signal output module；The acquisition mould
Block is used to acquire the detection signal of detection module output, right if the detection signal is voltage or current signal
The detection signal is filtered, is input to the processing module after the processing of adjustment amplitude, isolation and limited amplitude；If the inspection
Survey signal be frequency signal, then to the detection signal be filtered and isolation processing after be input to the processing module；It is described
On-off signal output module be used for according to the recognition result generate control signal be input to the gas drainage equipment and/or
Pipeline valve on branch's drainage tube；Pipeline valve in the gas drainage equipment and/or branch's drainage tube is used
In being remained operational according to the control signal or out of service.
In the present embodiment, the water-gas separator includes collector cabinet 1, power-driven mechanism, secondary filtration machine
Structure and vibration screen mechanism；Collector cabinet 1 is an opposite confined space, and 1 top right side of collector cabinet is mixed equipped with air water slag
Object entrance 2 is closed, 1 top left side of collector cabinet is equipped with bleeding point 3, and 1 bottom right bottom of collector cabinet is successively arranged from top to bottom
Cinder outlet 5 and coal slime outlet 6,1 lower-left bottom of collector cabinet is equipped with water outlet 4 and water outlet 4 is located in coal slime outlet 6
Side.
In the present embodiment, the vibration screen mechanism is located at 1 internal upper part of collector cabinet, and vibration screen mechanism includes the
One stainless steel plate 7 and external form are in the metal steel skeleton 8 of rectangular parallelepiped structure, and 8 left and right side of metal steel skeleton passes through just
Property spring 9 is connected with triangle skeleton buffer board 10, and the stiffness spring 9 of left and right side is equipped with a row along the longitudinal direction, and two
Triangle skeleton buffer board 10 is separately fixed at the triangle skeleton buffering in the left and right side of 1 upper inside wall of collector cabinet and left side
Plate 10 is located at 10 lower section of triangle skeleton buffer board on right side；8 bottom of metal steel skeleton is equipped with the first metal that external form is rectangle
Strainer 11,11 right edge of the first metal screen is close to 8 bottom surface right edge of metal steel skeleton, 11 front side edge of the first metal screen
It is less than 8 bottom surface front side edge edge of metal steel skeleton along length, the first metal screen 11, which is equipped with, is being located at air water slag mixture inlet 2 just
First rubber buffer plate 12 of lower section；First stainless steel plate position 7 is in the lower section of the first metal screen 11 and the first stainless steel plate 7 and the
One metal screen 11 is arranged in parallel, and the front side edge edge of the first stainless steel plate 7 and rear lateral edge are each attached to 1 inner wall of collector cabinet
On, the left side edge of the first stainless steel plate 7 is located at the right side of 11 left side edge of the first metal screen；8 bottom of metal steel skeleton is left
Side and right side are rotatably connected to idler wheel 13, and two idler wheels 13 roll and are connected to 7 upper surface of the first stainless steel plate；First is stainless
7 left side edge of steel plate is equipped with the baffle 14 that blocks water, and the first stainless steel plate 7 is equipped with the through-hole 15 close to the baffle 14 that blocks water.
In the present embodiment, the power-driven mechanism includes driving motor 16 and vibration pull rod 17, and driving motor 16 is set
It sets inside collector cabinet 1,16 main shaft key of driving motor is connected with drive disk 18, and metal steel skeleton 8 is equipped with fixing seat 19,
Vibration 17 one end of pull rod is hinged in fixing seat 19, and vibration 17 other end of pull rod is hinged on the bias of drive disk 18.
In the present embodiment, the secondary filtration mechanism include the second metal screen 20 and two resistance coal baffles 21, second
The front side edge edge of metal screen 20 and rear lateral edge are each attached on 1 inner wall of collector cabinet, and the second metal screen 20 is along left and right
Direction is inclined at 7 lower section of the first stainless steel plate and the left side edge of the second metal screen 20 is higher than right edge, the second gold medal
The right edge for belonging to strainer 20 exports 5 lower edges close to cinder；Second metal screen, 20 left side upper surface is slow equipped with the second rubber
Punching 22；Two resistance coal baffles 21 are between the first metal screen 11 and the second metal screen 20, before two resistance coal baffles 21
Side edge and rear lateral edge are each attached on 1 inner wall of collector cabinet, between two resistance coal baffles 21 and 1 inner wall of collector cabinet
Up big and down small and transparent taper blanking tube 23 is formed, the upper port of taper blanking tube 23 is left close to the first metal screen 11
Side edge and the underface for being located at 11 left side edge of the first metal screen, the lower port of taper blanking tube 23 are filtered close to the second metal
Net 20 and the surface for being located at the second rubber buffer plate 22.
In the present embodiment, 8 bottom of metal steel skeleton is equipped with the brush plate 24 for being located at 15 right side of through-hole, brush plate 24
Equipped with hairbrush 25, hairbrush 25 is contacted with 7 upper surface of the first stainless steel plate.
In the present embodiment, barometer 26 is equipped at the bleeding point 3.
In the present embodiment, the detection module includes one or more of sensor:
The flow sensor of detection gas flow, the pressure sensor of detection gas pressure, detection gas temperature temperature
Sensor, the firedamp sensor for detecting methane gas concentration and the carbon monoxide transducer for detecting carbon monoxide gas concentration.
Specifically, flow sensor can be set in mine passage, for detecting the gas flow inside mine passage,
And/or be arranged in gas pumping pipeline, for detecting the gas flow in gas pumping pipeline；Pressure sensor can be set
In mine passage, for detecting the gas pressure inside mine passage, and/or it is arranged in gas pumping pipeline, for examining
Survey the gas pressure in gas pumping pipeline；Temperature sensor can be set in mine passage, for detecting in mine passage
The temperature in portion, and/or be arranged in gas pumping pipeline or pipeline, for detecting temperature or ring in gas pumping pipeline
Border temperature；Firedamp sensor can be set in mine passage, for detecting the methane gas stream concentration inside mine passage,
And/or be arranged in gas pumping pipeline, for detecting the methane gas concentration in gas pumping pipeline；Carbon monoxide transducer
It can be set in the belt conveyor in mine, the carbon monoxide gas concentration that generates when for detecting adhesive tape kindling, and/or
It is arranged in mine passage, for detecting the carbon monoxide gas concentration inside mine passage, and/or setting in gas drainage pipe
In road, for detecting the carbon monoxide gas concentration in gas pumping pipeline.
It in the present embodiment, further include alarm module, the alarm module is used to be generated according to the recognition result and alarm
Signal.
Specifically, alarm module is electrically connected with processing module.Alarm module is specifically as follows audible alarm or light
Warning device generates alarm signal, when receiving the recognition result out of service of processing module input with sound or light
Form alarm, there are security risks for prompting under operator's current mine, in order to exclude security risk in time.
It in the present embodiment, further include display module and/or input module, the display module is for showing the noise reduction
The detection data that treated and the recognition result；The input module is used for the security risk parameter standard value
Range and the pipeline valve for controlling on the gas drainage equipment and/or branch's drainage tube remain operational or out of service
First control command is input to the processing module.
Specifically, display module and input module are electrically connected with processing module respectively.Display module is specifically as follows existing
Various display screens, such as thin film transistor (TFT) (Thin Film Transistor, abbreviation TFT) liquid crystal display, for receiving
It detection data after the noise reduction process of processing module input and recognition result and shows.It is defeated that input module is specifically as follows keyboard etc.
Enter device, for security risk parameter standard value range to be input to processing module, by control gas extraction equipment and/or gas
Extraction pipeline valve remains operational or the first control command out of service is input to processing module, realizes to gas drainage equipment
And/or the real-time control of gas pumping pipeline valve operating status.
It in the present embodiment, further include communication interface, the communication interface is used for the inspection after the noise reduction process
Measured data and the recognition result are input to host computer, and the control that the host computer the is inputted gas drainage equipment and/
Or the pipeline valve on branch's drainage tube remains operational or the second control command out of service is input to the processing mould
Block.
Specifically, communication interface is electrically connected with host computer and processing module respectively.Communication interface uses RS485 universal serial bus
Standard is specifically as follows fully integrated isolated data transceiver, such as data collector ADM2587, is used for processing module
Detection data and recognition result after the noise reduction process of input are input to host computer, and the control gas extraction that host computer is inputted
Equipment and/or gas pumping pipeline valve remain operational or the second control command out of service is input to processing module, realize
Long-range control to gas drainage equipment and/or gas pumping pipeline valve operating status.
It in the present embodiment, further include memory module, the memory module is for storing the security risk parameter and standard
It is worth range and the alarm signal.
Specifically, memory module is electrically connected with processing module.Memory module is specifically as follows the erasable programmable removed
Read-only memory (Electrically Erasable Programmable Read-Only Memory, abbreviation EEPROM),
For receiving processing module input security risk parameter standard value range and alarm signal and store.EEPROM has power down number
According to the function of not losing, the secure storage for realizing security risk parameter standard value range and alarm signal can be very good.
In addition, it is processing module that existing flame proof power supply, which can be used, in order to improve the reliability of processing module operational process
Power supply, flame proof power supply can according to needed for processing module operating voltage or electric current select model appropriate.
The appropriate location under mine can be arranged in detection module according to the experience of technical staff, for detecting in space to be measured
Security risk parameter (including one of following parameter or a variety of: gas flow, gas pressure, gas temperature, methane gas
Concentration and carbon monoxide gas concentration), and the security risk Parameter Switch for the non electrical quantity that will test is the detection signal of electricity
(signal of signal, current format including voltage format and the signal of frequency format) is input to processing module；Processing module is logical
The voltage format of analog-to-digital conversion channel reception detection module input and the detection signal of current format are crossed, and is converted into digital quantity
Signal is detected, by the detection signal for the frequency format that frequency acquisition channel reception detection module inputs, and to receiving
It detects signal and carries out noise reduction process, can specifically use existing various noise-reduction methods, such as Algorithms of Wavelet Analysis, detection is believed
Number carry out noise reduction process, extract noise reduction process after signal characteristic value, obtain detection data, and will test data and setting
Security risk parameter standard value range is compared, if detection data within the scope of the security risk parameter standard value of setting,
It generates the recognition result remained operational and is input to On-off signal output module, if detection data is not joined in the security risk of setting
In number standard value range, then generates recognition result out of service and be input to On-off signal output module；Processing module is specific
Can be central processing unit (Central Processing Unit, abbreviation CPU), such as 16 based on ARM920T kernel or
32 risc microcontroller S3C2440A；On-off signal output module is electrically connected by photoelectric isolating circuit with processing module；
The recognition result remained operational that On-off signal output module is inputted according to processing module generates control signal " 1 " and is input to
Gas drainage equipment and/or gas pumping pipeline valve, gas drainage equipment and/or gas pumping pipeline valve are according to receiving
Control signal " 1 " remain operational；The recognition result out of service that On-off signal output module is inputted according to processing module,
It generates control signal " 0 " and is input to gas drainage and start to write and/or gas pumping pipeline valve, gas drainage is started to write and/or gas
Extraction pipeline valve is out of service according to the control signal " 0 " received；Gas drainage equipment, gas pumping pipeline valve difference
Extraction in gas pumping pipeline, for control gas is set.
Algorithms of Wavelet Analysis is a kind of T/F analysis of signal derived from the improvement to Fourier's Fourier algorithm
Method.Compared with traditional filtering method, wavelet analysis all has good localization analysis characteristic in time domain and frequency domain, it
Ability with processing part or transient signal, can effectively extract information from signal.
As stated above, will drill presplit blasting and hydraulic flushing in hole of the present invention drills arranged crosswise, first implements presplit blasting, then
Hydraulic flushing in hole is carried out to the drilling of surrounding, explosion can make the loose coal around drilling, generate crack and formed with hydraulic flushing in hole
Crack is mutually communicated, and is formed around coal bed drilling and is intersected fracture network, is played the role of to the cracks in coal seam network rebuilding, crack into
The extension of one step, increases Gas Flow channel, improves gas permeability of coal seam, promotes the desorption and discharge of gas, appearance is greatly reduced
Blank tape；When punching simultaneously, a large amount of slack coals are gone out, the surrounding medium for forming cave is acutely mobile to duct hole direction, and coal occurs
The dilatancy of body and the opposite displacement of roof and floor cause the crustal stress in the certain coverage of punching to reduce, coal seam pressure relief,
Not only prominent power had been eliminated, but also has changed projecting coal bed property, prevention and treatment coal and gas prominent is played in digging operation
Effect, has that drilling hole amount is few, shorten gas total extraction time, extraction is high-efficient, tunnelling and coal work safety, mines
The advantages that high-efficient.It is provided with safety monitoring system, by carrying out noise reduction process using Algorithms of Wavelet Analysis to detection signal, and
The detection data obtained after noise reduction process and the security risk parameter standard value range of setting are compared, according to obtained knowledge
Other result controls the pipeline valve in gas drainage equipment and/or branch's drainage tube, due to what is obtained after noise reduction process
Detection data stability is good, and precision is high, improves the safety to gas drainage control, can effectively prevent gas accident
Occur, effectively improve gas permeability of coal seam, improve gas pumping effect, be effectively reduced the extraction time, to greatest extent reduction watt
This security risk.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (10)
1. the anti-reflection extraction system in coal seam in a kind of drilling, it is characterised in that: including the water being each provided in underground coal mine extraction lane
Power hole punched device, presplit blasting device, gas drainage device and safety monitoring system, at the top of the extraction lane from bottom to top successively
For seat earth, coal seam reservoirs and roof, several blasting boreholes of interlaced arrangement and punching drilling on the seat earth, and institute
The distance between blasting boreholes and adjacent punching drilling are stated as 3-6m, the operation end of the hydraulic flushing in hole device extend into punching brill
In hole, the operation end of the presplit blasting device is extend into blasting boreholes, after punching drilling punching and blasting boreholes
After explosion, the extraction end of the gas drainage device is extend into punching drilling and blasting boreholes；
The hydraulic flushing in hole device includes drilling machine, drilling rod, drill bit, high pressure water-injection pump and water-gas separator, on the drilling rod
End is water outlet, and lower end is water inlet, and the water outlet of the high pressure water-injection pump is connect with drilling rod water inlet, drilling rod lower end and probing
The power output end of machine connects, and drilling rod upper end extend into punching drilling and is fixedly connected with drill bit, seals at punching hell
Equipped with gas dust packing device, gas dust packing device is connect by pipeline with water-gas separator inlet；
The presplit blasting device includes initiator, lead and pvc pipe, is equipped with steel pipe, the steel pipe at the blasting boreholes mouth
Sealing is filled with cement mortar between blasting boreholes, and the pvc pipe upper end is inserted into steel pipe and extend into blasting boreholes
Portion, pvc pipe upper end are filled with emulsion, 1m are in axial direction provided with detonating capsule in emulsion, pvc pipe exists
Sealing is filled with stemming below the last one detonating capsule, and lead stretches out after detonating capsule is connected from pvc pipe lower end；
The gas drainage device includes branch's drainage tube, total drainage tube and gas drainage equipment, branch's drainage tube difference
It is inserted into punching drilling, total drainage tube will be connect after all branch's drainage tubes parallel connections with gas drainage equipment；
The safety monitoring system includes that detection module, processing module, acquisition module, On-off signal output module and setting exist
Pipeline valve on branch's drainage tube, the detection module are used to carry out coal seam reservoirs detection and obtain detection signal, and will
The detection signal is input to the processing module；
The detection signal includes one of following signals or a variety of:
Gas flow, gas pressure, gas temperature, methane gas concentration and carbon monoxide gas concentration；
The processing module is used to carry out noise reduction process to the detection signal using Algorithms of Wavelet Analysis to obtain detection data, and
The detection data and the security risk parameter standard value range of setting are compared, recognition result is generated and is input to described open
Measure input/output module in pass；
The acquisition module is used to acquire the detection signal of detection module output, if the detection signal for voltage or
Current signal is then filtered the detection signal, is input to the processing after the processing of adjustment amplitude, isolation and limited amplitude
Module；If the detection signal be frequency signal, to the detection signal be filtered and isolation processing after be input to described in
Processing module；
The On-off signal output module, which is used to generate control signal according to the recognition result, is input to the gas drainage
Pipeline valve in equipment and/or branch's drainage tube；
Pipeline valve in the gas drainage equipment and/or branch's drainage tube is used to keep transporting according to the control signal
It is capable or out of service.
2. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 1, it is characterised in that: the water-gas point
It include collector cabinet, power-driven mechanism, secondary filtration mechanism and vibration screen mechanism from device；Collector cabinet is one opposite
Confined space, collector cabinet top right side are equipped with air water slag mixture inlet, and collector cabinet top left side is equipped with bleeding point,
Collector cabinet bottom right bottom is successively arranged cinder outlet and coal slime outlet from top to bottom, and collector cabinet lower-left bottom is equipped with
The mouth of a river and water outlet are located at coal slime outlet top.
3. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 2, it is characterised in that: the vibration screen
Mechanism is located at top in collector box body, and vibration screen mechanism includes the first stainless steel plate and external form is in the metal of rectangular parallelepiped structure
Steel skeleton, the metal steel skeleton left and right side pass through stiffness spring and are connected with triangle skeleton buffer board, left and right side
Stiffness spring be equipped with a row along the longitudinal direction, two triangle skeleton buffer boards are separately fixed at collector cabinet upper inside wall
Left and right side and the triangle skeleton buffer board in left side be located at below the triangle skeleton buffer board on right side；Metal steel skeleton bottom
Equipped with the first metal screen that external form is rectangle, the first metal screen right edge is close to metal steel skeleton bottom surface right edge
Edge, the first metal screen front side edge length are less than metal steel skeleton bottom surface front side edge edge, and the first metal screen, which is equipped with, to be located at
The first rubber buffer plate immediately below air water slag mixture inlet；First stainless steel plate is located at the first metal screen lower section and first
Stainless steel plate is arranged in parallel with the first metal screen, and the front side edge edge of the first stainless steel plate and rear lateral edge are each attached to collector
On cabinet wall, the left side edge of the first stainless steel plate is located at the right side of the first metal screen left side edge；Metal steel skeleton bottom
Portion's left and right side is rotatably connected to idler wheel, and two idler wheels, which roll, is connected to the first stainless steel plate upper surface；First is stainless
Steel plate left side edge is equipped with the baffle that blocks water, and the first stainless steel plate is equipped with the through-hole close to the baffle that blocks water.
4. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 3, it is characterised in that: the power drive
Mechanism includes driving motor and vibration pull rod, and driving motor is arranged in collector box house, and driving motor main shaft key is connected with
Drive disk, metal steel skeleton are equipped with fixing seat, and vibration pull rod one end is hinged in fixing seat, and the vibration pull rod other end is hinged on
The bias of drive disk.
5. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 4, it is characterised in that: the secondary filtration
Mechanism includes the second metal screen and two resistance coal baffles, and the front side edge edge of the second metal screen and rear lateral edge are each attached to receipts
On storage cabinet wall, the second metal screen is inclined at below the first stainless steel plate in left-right direction and the second metal screen
Left side edge be higher than right edge, the right edge of the second metal screen exports lower edge close to cinder；Second metal screen
Left side upper surface is equipped with the second rubber buffer plate；Two resistance coal baffles between the first metal screen and the second metal screen,
Two resistance coal baffle front side edge edges and rear lateral edge are each attached on collector cabinet wall, two resistance coal baffles and collector box
Up big and down small and transparent taper blanking tube is formed between internal wall, the upper port of taper blanking tube is filtered close to the first metal
Net left side edge and the underface for being located at the first metal screen left side edge, the lower port of taper blanking tube are filtered close to the second metal
Net and the surface for being located at the second rubber buffer plate.
6. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 1, it is characterised in that: the detection module
Including one or more of sensor:
The flow sensor of detection gas flow, the pressure sensor of detection gas pressure, detection gas temperature temperature sensing
Device, the firedamp sensor for detecting methane gas concentration and the carbon monoxide transducer for detecting carbon monoxide gas concentration.
7. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 1, it is characterised in that: further include alarm mould
Block, the alarm module are used to generate alarm signal according to the recognition result.
8. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 1, it is characterised in that: further include display mould
Block and/or input module, the display module is for the detection data and identification knot after showing the noise reduction process
Fruit；The input module is used for the security risk parameter standard value range and controls the gas drainage equipment and/or institute
State that the pipeline valve on branch's drainage tube remains operational or the first control command out of service is input to the processing module.
9. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 1, it is characterised in that: further include that communication connects
Mouthful, the communication interface be used for by after the noise reduction process the detection data and the recognition result be input to host computer,
And the pipeline valve controlled on the gas drainage equipment and/or branch's drainage tube for inputting the host computer keeps fortune
The second capable or out of service control command is input to the processing module.
10. the anti-reflection extraction system in coal seam in a kind of drilling according to claim 7, it is characterised in that: further include storage
Module, the memory module is for storing the security risk parameter standard value range and the alarm signal.
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| CN201811251255.XA CN109578054A (en) | 2018-10-25 | 2018-10-25 | The anti-reflection extraction system in coal seam in a kind of drilling |
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|---|---|---|---|
| CN201811251255.XA CN109578054A (en) | 2018-10-25 | 2018-10-25 | The anti-reflection extraction system in coal seam in a kind of drilling |
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| CN112228028A (en) * | 2020-09-14 | 2021-01-15 | 山东科技大学 | Remote-control efficient hydraulic coal seam cutting permeability increasing device and construction method |
| CN113236343A (en) * | 2021-06-10 | 2021-08-10 | 安徽理工大学 | Intelligent gas extraction system used for underground coal mine |
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| CN114961835A (en) * | 2022-06-29 | 2022-08-30 | 中国矿业大学 | Variable-frequency vibration enhanced extraction device for coal mine gas drilling and use method thereof |
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| CN113266415A (en) * | 2021-06-16 | 2021-08-17 | 陕西长武亭南煤业有限责任公司 | Gas extraction equipment and method with alternative pumping and pressing |
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| CN114961835A (en) * | 2022-06-29 | 2022-08-30 | 中国矿业大学 | Variable-frequency vibration enhanced extraction device for coal mine gas drilling and use method thereof |
| CN116427996A (en) * | 2023-04-18 | 2023-07-14 | 淮北工业建筑设计院有限责任公司 | Management system and method for realizing grouting filling by using ground gas extraction pipe |
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Application publication date: 20190405 |