CN106050295B - A kind of Gas simulation system in the experiment for physical simulation - Google Patents
A kind of Gas simulation system in the experiment for physical simulation Download PDFInfo
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- CN106050295B CN106050295B CN201610298450.2A CN201610298450A CN106050295B CN 106050295 B CN106050295 B CN 106050295B CN 201610298450 A CN201610298450 A CN 201610298450A CN 106050295 B CN106050295 B CN 106050295B
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- gas
- mass flow
- simulation
- flow gauge
- exploitation
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- 238000004088 simulation Methods 0.000 title claims abstract description 47
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 10
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 230000006837 decompression Effects 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 15
- 238000005086 pumping Methods 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 6
- 238000013508 migration Methods 0.000 abstract description 4
- 230000005012 migration Effects 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 145
- 239000003245 coal Substances 0.000 description 9
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001617 migratory effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- E21B47/00—Survey of boreholes or wells
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses the Gas simulation system in a kind of experiment for physical simulation, including gas injecting mechanism and gas dissipation simulation mechanism；Gas injecting mechanism injects switch board including gas cabinet, gas cylinder, gas pressure reducer, gas main road, gas, divides gas mass flow gauge, vernier knob, gas buffer tank, digital display manometer, total gas mass flow gauge, data line and computer；The gas dissipation simulation mechanism includes branch pipeline, exploitation bar steel, experimental box body, pedestal and exploitation hydraulic cylinder.The present invention can be used in the Emission Law of gas under the conditions of simulation seam mining, and for research, gas migration, gas pumping provide facility in overlying strata under by mining influence.
Description
Technical field
The present invention relates to seam mining experimental provision technical field, more particularly relates to a kind of real for physical simulation
Gas simulation system in testing.
Background technology
China is world's first coal power, and coal production accounts for the 48.3% of the world, while coal is the main of China again
The energy, accounts for the 76% and 69% of primary energy production and consumption total amount respectively.It is current scientific research one that coal is adopted altogether with gas safety
Great problem.The large scale mining of coal so that seam mining depth is constantly deepened, and gas pressure increased dramatically in coal seam,
Face gas outburst amount is caused to steeply rise, serious mash gas dynamic phenomenon occurs again and again, or even gas combustion, explosion occurs
And the serious accident of coal and gas prominent etc, serious threat mine safety production, great casualties, economy are caused
Loss and undesirable social influence.To effectively eliminate the loss that Gas Disaster is brought to economic society, scholars have carried out greatly
One of quantity research, the effective means of gas preventing and control is exactly to formulate rational gas pumping scheme, but gas pumping scheme is reasonable
Whether, there is greatest relation with the migratory concentration of seam mining gas.At this stage, many scholars exist for research seam mining gas
Migratory concentration rule in overlying strata crack, a kind of effective means are exactly to be tested by physical simulation, but in the prior art,
Accurately gushing out for seam mining after gas of simulation is still difficult to realize, it is therefore necessary to which researching and developing a kind of can simulate Gas
Device.
The content of the invention
It is an object of the invention to provide the Gas simulation system in a kind of experiment for physical simulation, it is used for
The Emission Law of gas under the conditions of simulation seam mining, for research, gas migration, gas pumping carry in overlying strata under by mining influence
For facility.
The present invention is achieved in that the Gas simulation system in a kind of experiment for physical simulation, including
Gas injecting mechanism and gas dissipation simulation mechanism；
The gas injecting mechanism includes gas cabinet, gas cylinder, gas pressure reducer, gas main road, gas injection control
Cabinet processed, divide gas mass flow gauge, vernier knob, gas buffer tank, digital display manometer, total gas mass flow gauge, data to pass
Defeated line and computer；The gas cylinder is arranged in gas cabinet, and gas buffer tank, number are provided with the gas injection switch board
Aobvious pressure gauge, total gas mass flow gauge and multiple points of gas mass flow gauge, the gas cylinder are provided with gas pressure reducer,
The gas pressure reducer is connected with gas main road and then access gas buffer tank, the gas buffer tank are provided with digital display pressure
Table, the gas buffer tank connect total gas mass flow gauge by gas transfer pipeline, what total gas mass flow gauge came out
Gas is respectively connected to each point of gas mass flow gauge through multi-channel pipeline, connects each passage of each point of gas mass flow gauge
The size that pipeline enters gas flow is adjusted by vernier knob, and the gas vent of each point of gas mass flow gauge connects respectively
There is branch pipeline, the digital display manometer, total gas mass flow gauge are connected to computer through data line；
The gas dissipation simulation mechanism includes branch pipeline, exploitation bar steel, experimental box body, pedestal and exploitation hydraulic cylinder, institute
The bottom for stating experimental box body is provided with pedestal, and exploitation hydraulic cylinder is provided with the pedestal, is provided with above the pedestal more
A exploitation bar steel closely, each bottom for exploiting bar steel are supported by 2 exploitation hydraulic cylinders in parallel, the branch pipeline
Deliver the gas to exploitation bar steel.
Further, the inner hollow of the exploitation bar steel, the upper surface of the exploitation bar steel are evenly arranged with dissipation hole, institute
The lower surface for stating exploitation bar steel is provided with pipeline air admission hole and is fixed with steel pipe downwards in pipeline air inlet position, under the steel pipe
End is connected with branch pipeline.
Further, total gas mass flow gauge and a point gas mass flow gauge are MF gas mass flow gauge.
The present invention has the advantages that：
The present invention provides the Gas simulation system in a kind of experiment for physical simulation, including gas injection
Mechanism and gas dissipation simulation mechanism, can be used in the Emission Law of gas under the conditions of simulation seam mining, are adopted for research
Under the influence of in overlying strata gas migration, gas pumping facility is provided.The present invention can simulate Gas by adjusting gas flow,
Using surge tank buffering voltage stabilizing in gas circuit design, gas pressure size is simulated, and the big characteristic of one, and by pressure, flow
Computer preservation is constantly passed to etc. data, has very big help to experiment subsequent analysis data.In simulation system of the present invention, gas by
Gas cylinder injects switch board to gas, then bar steel is respectively enterd through branch pipeline, finally by the dissipation hole of bar steel upper surface
Goaf uniformly is emitted to, by mining influence Gas is also a big innovation to simulate, not only solves experimental model
Seam mining problem, also solves the problem of modelling that gas point source gushes out.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 provides the Gas simulation system signal in a kind of experiment for physical simulation for the embodiment of the present invention
Figure.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Gas in a kind of experiment for physical simulation provided in an embodiment of the present invention gushes exemplary the showing of Fig. 1
Go out to simulate system schematic.Gas simulation system in a kind of experiment for physical simulation provided in an embodiment of the present invention
System, including gas injecting mechanism and gas dissipation simulation mechanism；
As shown in Figure 1, gas injecting mechanism include gas cabinet 1, gas cylinder 2, gas pressure reducer 3, gas main road 4,
Gas injection switch board 5, divide gas mass flow gauge 6, vernier knob 7, gas buffer tank 8, digital display manometer 9, total gas matter
Measure flowmeter 10, data line 11 and computer 12；Gas cylinder 2 is arranged in gas cabinet 1, is set in gas injection switch board 5
It is equipped with gas buffer tank 8, digital display manometer 9, total gas mass flow gauge 10 and multiple points of gas mass flow gauge 6, gas steel
Bottle 2 is provided with gas pressure reducer 3, and gas pressure reducer 3 is connected with gas main road 4 and then access gas buffer tank 8, gas buffer
Tank 8 is provided with digital display manometer 9, and gas buffer tank 8 connects total gas mass flow gauge 10, total gas by gas transfer pipeline
The gas that mass flowmenter 10 comes out is respectively connected to each point of gas mass flow gauge 6 through multi-channel pipeline, connects each point of gas
The size that each passage tube of mass flowmenter 6 enters gas flow is adjusted by vernier knob 7, each point of gas mass flow
The gas vent of gauge 6 is connected to branch pipeline 13, and digital display manometer 9, total gas mass flow gauge 10 are through data line
11 are connected to computer 12；
The gas dissipation simulation mechanism includes branch pipeline 13, exploitation bar steel 14, experimental box body 15, pedestal 16 and exploitation liquid
Cylinder pressure 17, the bottom of experimental box body 15 are provided with pedestal 16, exploitation hydraulic cylinder 17 are provided with pedestal 16, the top of pedestal 16 is set
Multiple exploitation bar steels 14 closely are equipped with, each bar steel 14 of exploiting is supported by 2 exploitation hydraulic cylinders 17 in parallel, is in charge of
Road 13 delivers the gas to exploitation bar steel 14.
Total gas mass flow gauge 10 and a point gas mass flow gauge 6 are MF5700 gas mass flow gauge.
Gas simulation system in a kind of experiment for physical simulation provided in an embodiment of the present invention, it is main to use
In physical simulation experiment, the Emission Law by mining influence gas is simulated, and then studies gas in overlying strata crack
Migratory concentration.The present invention is to organically combine the gas injecting mechanism of autonomous Design research and development and gas dissipation simulation mechanism, can
For accurately simulating Gas in goaf., can be according to as follows when carrying out Gas Emission Law simulation using the system
Mode carries out：
(1) calculated by the theory of similarity, obtain the coal petrography characteristic for a certain specific mine, obtain matching somebody with somebody for analog material
Than.According to the amount of analog material needed for each layer in good modelling, its weight is weighed up respectively, adds water to load various dispensings
In agitating device, stir evenly, the material stirred evenly is poured into experimental box body 15, then carry out Ramming operation.For certain
The rock stratum block diagram of one specific mine, according to proportioning, continues to allot second layer analog material, and experiment porch babinet is loaded after stirring
In 15, and so on, complete experimental model and make, be 3m × 2.5m × 1.8m after the completion of model.
(2) after model dries, carry out physical simulation experiment, be to fall exploitation hydraulic cylinder 17 first, drive exploitation
Bar steel 14, simulates the recovery process in coal seam.
(3) gas pressure reducer 3 is opened, the gases at high pressure of gas cylinder 2 are after the decompression of pressure reducing valve 3, gas coming through manifold
Road 4 enters gas injection switch board 5；Gas injection switch board 5 plays the role of two, and first is to stablize the blowing pressure, inflation pressure
Power is similar to the coal-bed gas pressure simulated；Second is the shunting of methane gas, by multi-channel pipeline, is covered with respectively with multiple
The bar steel of micropore individually connects, and can play the role of accurately simulating gas, you can to simulate goaf deep to watt of superficial part
This gushes out change, and influence of the fltting speed to Gas.
(4) enter the methane gas of gas injection switch board 5, first flow through gas buffer tank 8, play the work of decompression and voltage stabilizing
With, then flow through digital display manometer 9, total gas mass flow gauge 10, flow and pressure data by data line 11 constantly
Incoming computer preserves, and gas enters multi-channel pipeline afterwards, and the size of each path into inbound traffics is adjusted by vernier knob 7
Section, shows that the amount of entrance is drawn according to experimental calculation by MF5700 gas mass flows gauge 6.
(5) flow accurately adjusted by each path is entered by branch pipeline 13 by the pedestal 16 of experimental box body 15
Bar steel 14 is exploited, goaf is uniformly emitted to finally by micropore, accurate simulation is gushed out rule by what Seam Mining was influenced gas
Rule.
(6) gas data collecting system is started, by gathering goaf deep direction, along working face direction and Vertical Square
Concentration parameter, the pressure parameter of upward gas, are waited after testing, and arrange data analysis gas under this kind of formation geology tune
Migration rule, finds rich region, and foundation is provided for gas pumping.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent
Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these modification and variations.
Claims (3)
1. the Gas simulation system in a kind of experiment for physical simulation, it is characterised in that including gas implanter
Structure and gas dissipation simulation mechanism；
The gas injecting mechanism includes gas cabinet (1), gas cylinder (2), gas pressure reducer (3), gas main road (4), gas
Body injection switch board (5), divide gas mass flow gauge (6), vernier knob (7), gas buffer tank (8), digital display manometer (9),
Total gas mass flow gauge (10), data line (11) and computer (12)；The gas cylinder (2) is arranged at gas cabinet (1)
In, it is provided with gas buffer tank (8), digital display manometer (9), total gas mass flow gauge in the gas injection switch board (5)
(10) and multiple points of gas mass flow gauge (6), the gas cylinder (2) are provided with gas pressure reducer (3), the gas decompression
Valve (3) is connected with gas main road (4) and then access gas buffer tank (8), the gas buffer tank (8) are provided with digital display pressure
Table (9), the gas buffer tank (8) connect total gas mass flow gauge (10), total gas mass flow by gas transfer pipeline
The gas that gauge (10) comes out is respectively connected to each point of gas mass flow gauge (6) through multi-channel pipeline, connects each point of gas matter
The size that each passage tube of amount flowmeter (6) enters gas flow is adjusted by vernier knob (7), each point of gaseous mass
The gas vent of flowmeter (6) is connected to branch pipeline (13), the digital display manometer (9), total gas mass flow gauge
(10) it is connected to computer (12) through data line (11)；
The gas dissipation simulation mechanism includes branch pipeline (13), exploitation bar steel (14), experimental box body (15), pedestal (16) and opens
Hydraulic cylinder (17) is adopted, the bottom of the experimental box body (15) is provided with pedestal (16), exploitation liquid is provided with the pedestal (16)
Cylinder pressure (17), is provided with multiple exploitation bar steels (14) closely, the exploitation bar steel above the pedestal (16)
(14) inner hollow, the upper surface of the exploitation bar steel (14) are evenly arranged with dissipation hole, each exploit bar steel (14) by 2
Exploitation hydraulic cylinder (17) support in parallel, the branch pipeline (13) deliver the gas to exploitation bar steel (14).
2. the Gas simulation system in a kind of experiment for physical simulation as claimed in claim 1, its feature exist
In the lower surface of the exploitation bar steel (14) is provided with pipeline air admission hole and is fixed with steel pipe downwards in pipeline air inlet position
(18), the lower end of the steel pipe (18) is connected with branch pipeline (13).
3. the Gas simulation system in a kind of experiment for physical simulation as claimed in claim 1, its feature exist
In total gas mass flow gauge (10) and a point gas mass flow gauge (6) are MF5700 gas mass flow gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298450.2A CN106050295B (en) | 2016-04-28 | 2016-04-28 | A kind of Gas simulation system in the experiment for physical simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610298450.2A CN106050295B (en) | 2016-04-28 | 2016-04-28 | A kind of Gas simulation system in the experiment for physical simulation |
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| Publication Number | Publication Date |
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| CN106050295A CN106050295A (en) | 2016-10-26 |
| CN106050295B true CN106050295B (en) | 2018-04-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108088978B (en) * | 2017-12-13 | 2020-03-24 | 中国矿业大学 | Three-dimensional simulation test device for mining rock stratum movement and gas migration |
| CN109164104B (en) * | 2018-09-18 | 2021-02-12 | 太原理工大学 | Gas-liquid two-phase countercurrent visual simulation test system for abandoned mine goaf |
| CN109696096B (en) * | 2019-02-01 | 2020-01-14 | 中国矿业大学(北京) | Engineering blasting disturbance physical model experiment device and experiment method |
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| CN103775122B (en) * | 2014-02-25 | 2015-12-09 | 中国矿业大学(北京) | Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation |
| CN203772840U (en) * | 2014-04-15 | 2014-08-13 | 西安科技大学 | Coal and gas outburst simulation and coal body permeability testing device |
| CN103956105A (en) * | 2014-04-23 | 2014-07-30 | 西安科技大学 | Miniature three-dimensional physical similarity simulation experiment table of goaf gas transport rules |
| CN203787002U (en) * | 2014-04-23 | 2014-08-20 | 西安科技大学 | Physical similarity simulation experiment table for coal-seam gas displacement achieved by gas injection |
| CN203949689U (en) * | 2014-07-09 | 2014-11-19 | 西安科技大学 | A kind ofly study the experimental provision that extraction negative pressure affects gas pumping efficiency |
| CN104564125B (en) * | 2014-12-02 | 2016-06-22 | 河南理工大学 | Cherry coal reservoir gas enhanced gas extraction contrast experiment's device and experimental technique |
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