CN104296956B - Combine and put/adopt coal wall flow field in goaf simulation test device and method - Google Patents
Combine and put/adopt coal wall flow field in goaf simulation test device and method Download PDFInfo
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- CN104296956B CN104296956B CN201410453668.1A CN201410453668A CN104296956B CN 104296956 B CN104296956 B CN 104296956B CN 201410453668 A CN201410453668 A CN 201410453668A CN 104296956 B CN104296956 B CN 104296956B
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- 239000003245 coal Substances 0.000 title claims abstract description 79
- 238000012360 testing method Methods 0.000 title claims abstract description 40
- 238000004088 simulation Methods 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000002485 combustion reaction Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 70
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 36
- 239000011435 rock Substances 0.000 claims description 20
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000005276 aerator Methods 0.000 claims description 10
- 229920001296 polysiloxane Polymers 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 6
- 239000005336 safety glass Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 229910021538 borax Inorganic materials 0.000 claims description 3
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 125000000219 ethylidene group Chemical group [H]C(=[*])C([H])([H])[H] 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 239000004328 sodium tetraborate Substances 0.000 claims description 3
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 6
- 238000013508 migration Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 230000006872 improvement Effects 0.000 abstract description 2
- 238000010998 test method Methods 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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- 238000005259 measurement Methods 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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Abstract
Coal wall flow field in goaf simulation test device and method are put/adopted to a kind of combining, it is adaptable to intends emulation acquisition test data and uses.It includes the test casing being filled with emulation coal seam, below emulation coal seam, place is provided with flow field in goaf pilot system, flow field in goaf pilot system is opened during use, thus simulate coal seam, coal seam goaf and collapse process, and ignited coal seam by flow field in goaf pilot system, and gather the information of flow after coal combustion.Test method is simple, and analog result has directive significance for the understanding fire condition in goaf, gas migration rule and improvement heterogeneous goaf, Gas Disaster.
Description
Technical field
The present invention relates to a kind of assay device and method, be particularly suited for the comprehensive of analog simulation acquisition test data use in mine safety and put/adopt coal wall flow field in goaf simulation test device and method.
Background technology
During pit mining, along with the propelling of work surface, coal seam is mined out, stope original mechanical balance state is destroyed, the overlying rock losing support is subjected to displacement deformation, is caving until destroying, and forms the goaf being made up of in a large number loose coal rock accumulation body at work surface rear.
The high seam fully mechanized coal face rate of extraction is typically below 80%, and the something lost coal in goaf is the most, becomes the material base of spontaneous fire；Putting coal and roof caving scope is relatively big, under the pressure effect of ore deposit, stope rear forms axiolitic inbreak, crushed zone, goaf will not be compacted in the short term, leak out channels open, and float coal easily occurs oxidation to generate toxic and harmful, even causes goaf disaster hidden-trouble；Meanwhile, a large amount of coals of losing gradually discharge gas and with the migration of leaking out within goaf in goaf, also easily cause gas accident.The safety coal extraction of the healthy and mine of the serious threat stope staff that gushes out of heterogeneous goaf fire and gas must be studied, and recognizing flow field in goaf characteristic is to carry out the basis of this type of research.
Owing to the comprehensive disguise put/adopt within goaf, coal wall is strong, destructive big, flow field in goaf major parameter carrying out the feasibility of systematic observation not quite, simulation experiment is the Main Means studying the flow field in goaf relevant issues such as Gas Flow, spontaneous fire.At present, the simulation to flow field in goaf relevant issues mainly uses two kinds of methods, and one is the numerical simulation by the flow field in goaf characteristic by means of modern computing analytical technology；Two is to build physical model by laying analog material to carry out physical modeling.The objectivity of numerical simulation is not strong, and conclusion easily deviates reality, it is necessary to just can overcome disadvantages mentioned above on the premise of physical modeling or field measurement data correction, and this just seems that the physical modeling of flow field in goaf is particularly important.At present, mostly existing flow field in goaf physical simulating method is closing space direct pack grain medium, such as such as broken coal, rubbles etc. realize the simulation to goaf, and on these charges, do not load burden pressure, even if some model is loaded with burden pressure, the stress of loading force and actual superstratum does not the most have similarity, that is the impact of flow field in goaf is not accounted for by ore deposit pressure, thus the flow field character under the pressure effect of ore deposit fully can not be embodied on scale model, cause the research conclusion obtained by physical modeling can't be the most identical with practical situation.
Summary of the invention
Goal of the invention: in place of the deficiencies in the prior art, a kind of simple in construction is provided, easy to use, can truly reduce combine put/adopt coal wall gob collapse and burning and the comprehensive of work surface gas flowing flow field put/adopt coal wall flow field in goaf simulation test device and method.
nullTechnological means: for realizing above-mentioned technical purpose，Coal wall flow field in goaf simulation test device is put/adopted to the comprehensive of the present invention，Including the test casing being filled with emulation coal seam，Described emulation coal seam is by overlying rock and leaves over coal seam and constitutes，Below the emulation coal seam of test model case, place is provided with flow field in goaf pilot system，Described flow field in goaf pilot system includes the hydraulic lift being located at test box bottom，Described hydraulic lift includes multiple hydraulic lifting arms of linear array and hydraulic means trigger interconnective with hydraulic lifting arm，The polylith ribbon slide block matched with hydraulic lifting arm it is covered with on hydraulic lift，Described ribbon slide block both sides are dug fluted，Multiple ribbon slide block linear array thus form intake and return aircourse respectively in ribbon slide block both sides，Described test casing is upper is respectively equipped with air inlet and air outlet at intake and return aircourse，Air inlet is provided with accurate aerator，Described ribbon slide block upper surface is provided with grooved silicone tube，And it is provided with evenly distributed multiple holes，The thermocouple not following ribbon slide block oscilaltion it is provided with in described hole、Velocity sensor and gas detector，Described thermocouple、The outfan of velocity sensor and gas detector is connected respectively to the input of data acquisition unit.
Described test casing is safety glass structure, and hydraulic lifting arm is pneumatic or oily hydrodynamic depression bar；The support being fixed in proof box body it is provided with below described thermocouple, velocity sensor and gas detector, when hydraulic lifting arm rises, thermocouple, velocity sensor and gas detector are received in the hole of ribbon slide block, when hydraulic lifting arm is fallen, then thermocouple, velocity sensor and gas detector do not follow the decline of banding slide block, lean out after ribbon slide block is fallen in the hole of banding slide block.
Coal wall flow field in goaf simulation experiment method is put/adopted to a kind of combining, and its step is as follows:
A. the multiple hydraulic lifting arms related ribbon slide block utilizing hydraulic control device Control experiment box bottom rises, lay the most successively in proof box body and leave over coal seam and overlying rock, described coal seam of leaving over is the dry prose style free from parallelism coal dissipated, and described overlying rock Gypsum Fibrosum powder, Paris white and Borax mix；
b.
The hydraulic lifting arm starting hydraulic control device control linear array drives strip slide block to fall successively, it is arranged on the overlying rock on ribbon slide block and the absciss layer space left between coal seam incrementally increases under the ore deposit pressure effect of simulation, when reaching the limit of rupture of overlying rock, i.e. it is deformed destroying, until being caving, thus simulate the scene of reduction flow field in goaf, after declining along with ribbon slide block, the thermocouple, velocity sensor and the gas detector that are located in ribbon slide block hole lean out in hole simultaneously；
C. in ribbon slide block hole, thermocouple is leant out, velocity sensor and gas detector stretch into and are exposed to above ribbon slide block leave in the something lost coal formed after coal seam subsides, open the accurate aerator air blast in intake on air inlet afterwards, turn on the power) power to the grooved silicone tube being arranged on ribbon slide block, step up grooved silicone tube temperature thus ignite and leave over the something lost coal formed after coal seam subsides, start thermocouple afterwards, velocity sensor and gas detector, utilize the change of temperature field in thermocouple monitoring goaf, utilize the oxygen after the something lost coal combustion of gas detector monitoring simulation work surface gob collapse situation, methane, CO, carbon dioxide, nitrogen, C2H4、C2H6、C3H8The proportion of gas component, utilize velocity sensor monitoring simulation work surface goaf in burn produce flow field flow stream, and by thermocouple, velocity sensor and gas detector monitor data be sent in data acquisition unit record thus complete test data acquisition.
When carrying out the test of gas flow field, methane gas outlet tube is then set on ribbon slide block, and the thermocouple and the gas detector that arrange in ribbon slide block are replaced with methane gas detector, methane is discharged afterwards by methane gas outlet tube, open the intake air blast that accurate aerator is formed to ribbon slide block, with the methane gas detector being arranged on ribbon slide block and velocity sensor record monitoring information, and obtain the distribution characteristics of gas density field after monitoring information is sent in data acquisition unit record.
nullBeneficial effect: the present invention arranges hydraulic lifting arm and ribbon slide block in the proof box body that safety glass is made，And on ribbon slide block, spread overlying rock and simulation coal seam, coal seam，And form something lost coal process after being subsided by hydraulic lifting arm lifting simulation work surface，Simple in construction，Convenient observation overall process，Fully demonstrated overlying rock and process that the absciss layer space left between coal seam incrementally increases under the pressure effect of ore deposit simultaneously，Simulate effective，Can be ignited after simulation process the something lost coal that subsides simultaneously，And pass through thermocouple、Gas product parameter and the flowing law of fire smoke when velocity sensor and gas detector collection research goaf are got angry，Can also be in order to grasp temperature field, goaf and the regularity of distribution in gas flow field，Test method is simple，Analog result is for understanding the fire condition in goaf、Gas migration rule and improvement heterogeneous goaf、Gas Disaster has directive significance.
Accompanying drawing explanation
Fig. 1 is that the present invention combines the physical simulating device structure chart putting/adopt coal wall flow field in goaf characteristic；
Fig. 2 is the ribbon slide block grooves on two sides characteristic pattern of the present invention；
Fig. 3 is that the present invention combines and puts/adopt top view above the physical simulating device ribbon slide block of coal wall flow field in goaf characteristic；
Fig. 4 is that the present invention is comprehensive puts/adopts goaf, coal wall superjacent and top board with adopting with the process schematic that falls；
In figure: 1-tests casing, 2-overlying rock, 3-coal seam, 4-ribbon slide block, 5-hydraulic lifting arm, 6-intake, 7-return aircourse, 8-precision aerator, 9-thermocouple, 10-velocity sensor, 11-gas detector, 12-grooved silicone tube, 13-power supply, 14-data acquisition unit, 15-hydraulic control device, 16-groove.
Detailed description of the invention
Below in conjunction with the accompanying drawings the detailed description of the invention of the present invention is further described,
nullAs shown in Figure 1，Coal wall flow field in goaf simulation test device is put/adopted to the comprehensive of the present invention，It includes the test casing 1 being filled with emulation coal seam，Described test casing 1 is safety glass structure，The a height of 3800 mm × 2000 mm × 1500mm of length and width，Described emulation coal seam is by overlying rock 2 and leaves over coal seam 3 and constitutes，Below the emulation coal seam of test model case, place is provided with flow field in goaf pilot system，Described flow field in goaf pilot system includes being located at the hydraulic lift bottom test casing 1，Described hydraulic lift includes multiple hydraulic lifting arms 5 of linear array and hydraulic means trigger 15 interconnective with hydraulic lifting arm 5，Described hydraulic lifting arm 5 is pneumatic or oily hydrodynamic depression bar，The polylith ribbon slide block 4 matched with hydraulic lifting arm 5 it is covered with on hydraulic lift，Described ribbon slide block 4 both sides dig fluted 13，Multiple ribbon slide block 4 linear array thus form intake and return aircourse respectively in ribbon slide block 4 both sides，It is positioned at intake and return aircourse on described test casing 1 and is respectively equipped with air inlet 6 and air outlet 7，Air inlet 6 is provided with accurate aerator 8，Described ribbon slide block 4 upper surface is provided with grooved silicone tube 12，And it is provided with evenly distributed multiple holes，The thermocouple 9 not following ribbon slide block 4 oscilaltion it is provided with in described hole、Velocity sensor 10 and gas detector 11，Described thermocouple 9、The outfan of velocity sensor 10 and gas detector 11 is connected respectively to the input of data acquisition unit 14,Described thermocouple 9、The support being fixed in test casing 1 it is provided with below velocity sensor 10 and gas detector 11，When hydraulic lifting arm 5 rises，Thermocouple 9、Velocity sensor 10 and gas detector 11 are received in the hole of ribbon slide block 4，When hydraulic lifting arm 5 is fallen，Then thermocouple 9、Velocity sensor 10 and gas detector 11 are not followed banding slide block 4 and are declined，Lean out in the hole of banding slide block 4 after ribbon slide block 4 is fallen；Described thermocouple 9, velocity sensor 10 and gas detector 11 model are existing sale product.
Coal wall flow field in goaf simulation experiment method is put/adopted to a kind of combining, and its step is as follows:
A. the multiple hydraulic lifting arms 5 related ribbon slide block 4 bottom hydraulic control device 15 Control experiment casing 1 is utilized to rise, lay the most successively in test casing 1 and leave over coal seam 3 and overlying rock 2, described coal seam 3 of leaving over is the dry prose style free from parallelism coal dissipated, and described overlying rock 2 mixes for Gypsum Fibrosum powder, Paris white and Borax；
b.
Startup hydraulic control device 15 controls the hydraulic lifting arm 5 of linear array and drives strip slide block 4 to fall successively, the overlying rock 2 being arranged on ribbon slide block 4 and the absciss layer space left between coal seam 3 incrementally increase under the ore deposit pressure effect of simulation, when reaching the limit of rupture of overlying rock 2, i.e. it is deformed destroying, until being caving, thus simulate the scene of reduction flow field in goaf, after declining along with ribbon slide block 4 simultaneously, it is located at the thermocouple 9 in ribbon slide block 4 hole, velocity sensor 10 and gas detector 11 and leans out in hole；
C. in ribbon slide block 4 hole, thermocouple 9 is leant out, velocity sensor 10 and gas detector 11) stretch into and be exposed to above ribbon slide block 4 to leave in the something lost coal formed after coal seam 3 subsides, open accurate aerator 8 air blast in intake on air inlet 6 afterwards, turn on the power 13 to power to the grooved silicone tube 12 being arranged on ribbon slide block 4, step up grooved silicone tube 12 temperature thus ignite and leave over the something lost coal formed after coal seam 3 subsides, start thermocouple 9 afterwards, velocity sensor 10 and gas detector 11, thermocouple 9 is utilized to monitor the change of temperature field in goaf, utilize the oxygen after the something lost coal combustion of gas detector 11 monitoring simulation work surface gob collapse situation, methane, CO, carbon dioxide, nitrogen, C2H4、C2H6、C3H8The proportion of gas component, utilize velocity sensor 10 monitoring simulation work surface goaf in burn produce flow field flow stream, and be sent in data acquisition unit 14 record by the data that thermocouple 9, velocity sensor 10 and gas detector 11 are monitored thus complete test data acquisition.
When carrying out the test of gas flow field, methane gas outlet tube is then set on ribbon slide block 4, and the thermocouple 9 arranged in ribbon slide block 4 and gas detector 11 are replaced with methane gas detector 11, methane is discharged afterwards by methane gas outlet tube, open the intake air blast that accurate aerator 7 is formed to ribbon slide block 4, record monitoring information with the methane gas detector 11 being arranged on ribbon slide block 4 and velocity sensor 10, and obtain the distribution characteristics of gas density field after monitoring information is sent in data acquisition unit 14 record.
This method is by goaf fire, the simulation experiment in gas flow field, the gaseous product produced during can disclosing goaf natural fire and the flowing law of the disaster gas such as fire, gas, grasping the rule in temperature field, goaf, the result of simulation has great directive significance for understanding the fire condition in goaf, gaseous product and migration rule and preventing and treating goaf gas disaster.
Claims (5)
- null1. one kind combine put/adopt coal wall flow field in goaf simulation test device，It is characterized in that: it includes being filled with the test casing (1) in emulation coal seam，Described emulation coal seam is by overlying rock (2) and leaves over coal seam (3) and constitutes，Below the emulation coal seam of test casing (1), place is provided with flow field in goaf pilot system，Described flow field in goaf pilot system includes the hydraulic lift being located at test casing (1) bottom，Described hydraulic lift include linear array multiple hydraulic lifting arms (5) and with hydraulic lifting arm (5) interconnective hydraulic control device (15)，Polylith ribbon slide block (4) matched with hydraulic lifting arm (5) it is covered with on hydraulic lift，Fluted (16) are dug in described ribbon slide block (4) both sides，Multiple ribbon slide block (4) linear array thus form intake and return aircourse respectively in ribbon slide block (4) both sides，It is positioned at intake and return aircourse on described test casing (1) and is respectively equipped with air inlet (6) and air outlet (7)，Air inlet (6) is provided with accurate aerator (8)，Described ribbon slide block (4) upper surface is provided with grooved silicone tube (12)，And it is provided with evenly distributed multiple holes，The thermocouple (9) not following ribbon slide block (4) oscilaltion it is provided with in described hole、Velocity sensor (10) and gas detector (11)，Described thermocouple (9)、The outfan of velocity sensor (10) and gas detector (11) is connected respectively to the input of data acquisition unit (14).
- Coal wall flow field in goaf simulation test device is put/adopted to the most according to claim 1 combining, it is characterised in that: described test casing (1) is safety glass structure, and hydraulic lifting arm (5) is pneumatic or oily hydrodynamic depression bar.
- Coal wall flow field in goaf simulation test device is put/adopted to the most according to claim 1 combining, it is characterized in that: described thermocouple (9), velocity sensor (10) and gas detector (11) lower section are provided with the support being fixed in test casing (1), when hydraulic lifting arm (5) rises, thermocouple (9), velocity sensor (10) and gas detector (11) are received in the hole of ribbon slide block (4), when hydraulic lifting arm (5) is fallen, then thermocouple (9), velocity sensor (10) and gas detector (11) are not followed banding slide block (4) and are declined, lean out in the hole of banding slide block (4) after ribbon slide block (4) is fallen.
- 4. one kind uses to combine described in claim 1 and puts/adopt the comprehensive of coal wall flow field in goaf simulation test device and put/adopt coal wall flow field in goaf simulation experiment method, it is characterised in that step is as follows:A. multiple hydraulic lifting arms (5) related ribbon slide block (4) utilizing hydraulic control device (15) Control experiment casing (1) bottom rises, lay the most successively in test casing (1) and leave over coal seam (3) and overlying rock (2), described coal seam (3) of leaving over is the dry prose style free from parallelism coal dissipated, and described overlying rock (2) is that Gypsum Fibrosum powder, Paris white and Borax mix；B. the hydraulic lifting arm (5) starting hydraulic control device (15) control linear array drives strip slide block (4) to fall successively, the overlying rock (2) being arranged on ribbon slide block (4) and the absciss layer space left between coal seam (3) incrementally increase under the ore deposit pressure effect of simulation, when reaching the limit of rupture of overlying rock (2), i.e. it is deformed destroying, until being caving, thus simulate the scene of reduction flow field in goaf, after declining along with ribbon slide block (4) simultaneously, the thermocouple (9) being located in ribbon slide block (4) hole, velocity sensor (10) and gas detector (11) lean out in hole；nullC. in ribbon slide block (4) hole, lean out thermocouple (9)、Velocity sensor (10) and gas detector (11) stretch into ribbon slide block (4) top and are exposed to leave in the something lost coal formed after coal seam (3) subsides，Open accurate aerator (8) air blast in intake on air inlet (6) afterwards，Turn on the power (13) to grooved silicone tube (12) power supply being arranged on ribbon slide block (4)，Step up grooved silicone tube (12) temperature thus ignite and leave over the something lost coal formed after coal seam (3) subsides，Start thermocouple (9) afterwards、Velocity sensor (10) and gas detector (11)，Utilize the change of temperature field in thermocouple (9) monitoring goaf，Utilize the oxygen after the something lost coal combustion of gas detector (11) monitoring simulation work surface gob collapse situation、Methane、CO、Carbon dioxide，Nitrogen、C2H4、C2H6、C3H8The proportion of gas component, utilize velocity sensor (10) monitoring simulation work surface goaf in burn produce flow field flow stream, and be sent in data acquisition unit (14) record by the data that thermocouple (9), velocity sensor (10) and gas detector (11) are monitored thus complete test data acquisition.
- Coal wall flow field in goaf simulation experiment method is put/adopted to the most according to claim 4 combining, it is characterized in that: when carrying out the test of gas flow field, then methane gas outlet tube is set on ribbon slide block (4), and the thermocouple (9) and the gas detector (11) that arrange in ribbon slide block (4) are replaced with methane gas detector (11), methane is discharged afterwards by methane gas outlet tube, open the intake air blast that accurate aerator (8) is formed to ribbon slide block (4), monitoring information is recorded with the methane gas detector (11) being arranged on ribbon slide block (4) and velocity sensor (10), and monitoring information is sent to obtain after record in data acquisition unit (14) distribution characteristics of gas density field.
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| CN104990687B (en) * | 2015-07-17 | 2017-08-25 | 中国矿业大学 | Visual test method for researching dust migration rule in fully-mechanized excavation face roadway |
| CN107490667A (en) * | 2017-08-03 | 2017-12-19 | 立方通达实业（天津）有限公司 | Demonstration equipment in a kind of geotechnological inbreak phenomenon room |
| CN107328551B (en) * | 2017-08-25 | 2023-02-07 | 河南工程学院 | Fully mechanized working face heterogeneous goaf flow field simulation experiment device |
| CN108333291B (en) * | 2018-02-01 | 2020-09-15 | 山东科技大学 | Experimental device and experimental method for simulating goaf natural ignition |
| CN108801583B (en) * | 2018-06-05 | 2023-11-17 | 华北科技学院 | Goaf flow field simulation experiment device |
| CN110082504B (en) * | 2019-05-08 | 2021-07-30 | 国家能源投资集团有限责任公司 | Simulation excavation box device, simulation experiment equipment and simulation experiment method |
| CN110514551B (en) * | 2019-08-02 | 2022-03-25 | 安阳工学院 | System and test method for measuring performance of fire-fighting spraying material for flammable coal seam |
| CN111830234A (en) * | 2020-07-23 | 2020-10-27 | 华北科技学院 | Goaf carbon dioxide transport and dissipation experimental method |
| CN111830233A (en) * | 2020-07-23 | 2020-10-27 | 华北科技学院 | Goaf carbon dioxide transport and dissipation experimental device |
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| JPS6175408A (en) * | 1984-09-19 | 1986-04-17 | Mitsubishi Electric Corp | Pressure controller of blow-out type wind channel |
| CN101315306A (en) * | 2008-06-23 | 2008-12-03 | 山东科技大学 | Simulation experiment bench for stope mining machinery |
| CN102297929A (en) * | 2011-07-06 | 2011-12-28 | 河南理工大学 | Tectonic coal pressure relief and outburst simulation experiment device |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6175408A (en) * | 1984-09-19 | 1986-04-17 | Mitsubishi Electric Corp | Pressure controller of blow-out type wind channel |
| CN101315306A (en) * | 2008-06-23 | 2008-12-03 | 山东科技大学 | Simulation experiment bench for stope mining machinery |
| CN102297929A (en) * | 2011-07-06 | 2011-12-28 | 河南理工大学 | Tectonic coal pressure relief and outburst simulation experiment device |
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