CN103775122B - Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation - Google Patents
Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation Download PDFInfo
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- CN103775122B CN103775122B CN201410064942.6A CN201410064942A CN103775122B CN 103775122 B CN103775122 B CN 103775122B CN 201410064942 A CN201410064942 A CN 201410064942A CN 103775122 B CN103775122 B CN 103775122B
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- 239000003245 coal Substances 0.000 title claims abstract description 53
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 51
- 238000000605 extraction Methods 0.000 title claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 18
- 238000002474 experimental method Methods 0.000 title claims abstract description 15
- 238000009434 installation Methods 0.000 title claims abstract description 13
- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 17
- 238000005065 mining Methods 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 claims description 3
- 238000004088 simulation Methods 0.000 abstract description 11
- 239000007789 gas Substances 0.000 description 80
- 239000011435 rock Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001808 coupling effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
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Abstract
The invention discloses a kind of easily the goaf gas extraction of spontaneous combustion high gas layer and spontaneous combustionof coal analogue experiment installation, comprise U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system.U-shaped work plane coal mining system comprises intake, return aircourse, work plane, goaf.Ventilation system comprises exhaust ventilation machine and annex thereof.Gas train comprises gas bottle, valve, pressure meter, gas feeding pipe.Extraction system comprises gas suction pump, gas drainage pipeline, valve, flow meter, B/P EGR Back Pressure Transducer EGR.Data test acquisition system comprises air velocity transducer, gas concentration sensor, temperature pick up, co sensor, data acquisition module, Industrial Personal Computer (IPC) etc.Can relation between the goaf gas extraction of real simulation easy spontaneous combustion high gas layer and spontaneous combustionof coal, to realize testing while gas drainage under suction and spontaneous combustionof coal.
Description
Technical field
The present invention relates to a kind of Coal Mining Technology, particularly relate to a kind of easily the goaf gas extraction of spontaneous combustion high gas layer and spontaneous combustionof coal analogue experiment installation.
Background technology
Mine gas is in coal production process, the general name of the various gases gushed out in coal, rock.In recent years, along with adopting dark increase, highly gassy mine, coal and gas outburst mine are more and more, and gas accident is continuous.At present, the major measure taked gas control is exactly gas drainage under suction, wherein just comprises goaf gas drainage, but the danger with spontaneous combustionof coal while goaf gas drainage administers gas at upper corner overrun issues is being carried out in some colliery.If gas drainage under suction negative pressure is excessive, leaking out in goaf will increase, and can increase the danger of spontaneous combustionof coal.If gas drainage under suction negative pressure is too small, leaks out and will reduce in goaf, the danger of spontaneous combustionof coal also can reduce, but the gas gushed out in goaf to upper corner will increase, and causes gas exceeding limit impact of reporting to the police to produce and safety of coal mines.Therefore, the relation between suitable gas drainage under suction and spontaneous combustionof coal is found to transfinite most important with spontaneous combustionof coal for controlling gas at upper corner.Now, the means for the multiplex numerical simulation of this problem are studied, but often will ignore several factors due to numerical simulation and just can make, comparatively large with actual conditions deviation, limited for actual guiding value.
Summary of the invention
The object of this invention is to provide a kind of easily the goaf gas extraction of spontaneous combustion high gas layer and spontaneous combustionof coal analogue experiment installation, can relation between the goaf gas extraction of real simulation easy spontaneous combustion high gas layer and spontaneous combustionof coal, to realize testing while gas drainage under suction and spontaneous combustionof coal, formulate gas drainage under suction measure for actual colliery and prevent spontaneous combustionof coal measure to provide foundation, preventing the generation of spontaneous combustionof coal and gas exceeding limit problem.
The object of the invention is to be achieved through the following technical solutions:
Easy spontaneous combustion high gas layer goaf gas extraction of the present invention and spontaneous combustionof coal analogue experiment installation, comprise U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system;
Described U-shaped work plane coal mining system comprises intake, return aircourse, work plane, goaf;
Described ventilation system comprises the exhaust ventilation machine and annex thereof of being located at exit, described return aircourse;
Described gas train comprises gas bottle, valve, pressure meter, gas feeding pipe;
Described extraction system comprises gas suction pump, gas drainage pipeline, valve, flow meter, B/P EGR Back Pressure Transducer EGR;
The outlet of described gas feeding pipe and the import of described gas drainage pipeline extend in described goaf respectively;
Described data test acquisition system comprises the air velocity transducer being located at described intake, return aircourse and work plane, also comprises gas concentration sensor, temperature pick up and the co sensor of being located at described goaf;
Described air velocity transducer, gas concentration sensor, temperature pick up, co sensor are connected with Industrial Personal Computer (IPC) respectively by data acquisition module.
As seen from the above technical solution provided by the invention, the easy spontaneous combustion high gas layer goaf gas extraction that the embodiment of the present invention provides and spontaneous combustionof coal analogue experiment installation, owing to comprising U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system, can relation between the goaf gas extraction of real simulation easy spontaneous combustion high gas layer and spontaneous combustionof coal, to realize testing while gas drainage under suction and spontaneous combustionof coal, formulate gas drainage under suction measure for actual colliery and prevent spontaneous combustionof coal measure to provide foundation, prevent the generation of spontaneous combustionof coal and gas exceeding limit problem.
Accompanying drawing explanation
The layout schematic diagram of the easy spontaneous combustion high gas layer goaf gas extraction that Fig. 1 provides for the embodiment of the present invention and spontaneous combustionof coal analogue experiment installation;
Fig. 2 is the layout schematic diagram of gas train in the embodiment of the present invention.
In figure: 1, exhaust ventilation machine, 2, valve, 3, gas suction pump, 4, flow meter, 5, gas drainage pipeline, 6, B/P EGR Back Pressure Transducer EGR, 7, gas inlet, 8, gas concentration sensor, 9, temperature pick up, 10, co sensor, 11, data acquisition module, 12, Industrial Personal Computer (IPC), 13, air velocity transducer, 14, pressure meter and reducing valve, 15, gas bottle.
Detailed description of the invention
To be described in further detail the embodiment of the present invention below.
Easy spontaneous combustion high gas layer goaf gas extraction of the present invention and spontaneous combustionof coal analogue experiment installation, its preferably detailed description of the invention be:
Comprise U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system;
Described U-shaped work plane coal mining system comprises intake, return aircourse, work plane, goaf;
Described ventilation system comprises the exhaust ventilation machine and annex thereof of being located at exit, described return aircourse;
Described gas train comprises gas bottle, valve, pressure meter, gas feeding pipe;
Described extraction system comprises gas suction pump, gas drainage pipeline, valve, flow meter, B/P EGR Back Pressure Transducer EGR;
The outlet of described gas feeding pipe and the import of described gas drainage pipeline extend in described goaf respectively;
Described data test acquisition system comprises the air velocity transducer being located at described intake, return aircourse and work plane, also comprises gas concentration sensor, temperature pick up and the co sensor of being located at described goaf;
Described air velocity transducer, gas concentration sensor, temperature pick up, co sensor are connected with Industrial Personal Computer (IPC) respectively by data acquisition module.
Described return aircourse and work plane are also respectively equipped with gas concentration sensor, temperature pick up and co sensor.
Separate with canvas between described work plane and goaf, multiple micropore arranged by canvas simultaneously.
State the micropore uneven distribution on canvas, the micropore at the position of the corresponding intake in canvas two ends and return aircourse arranges that quantity arranges quantity more than the micropore in the middle part of canvas.
Described work plane is provided with alarm.
The present invention can simulation test goaf gas drainage time and spontaneous combustionof coal between coupling effect, for formulating gas to actual colliery and coal spontaneous combustion control measures provides theoretical foundation.
Specific embodiment:
As shown in Figure 1 and Figure 2, U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system is comprised.U-shaped work plane is made up of an intake, a return aircourse, work plane, goaf etc., ventilation system comprises exhaust ventilation machine, fixture, gas train comprises gas bottle, valve, pressure meter, pipeline, extraction system comprises gas suction pump, releasing pipe, valve, flow meter, vacuum table, and data test acquisition system comprises air velocity transducer, temperature pick up, co sensor, connecting line, data acquisition module, power supply, Industrial Personal Computer (IPC), data processing software etc.
Separate with canvas between work plane and goaf, some micropores arranged by canvas simultaneously, leak out to produce, goaf air leaking situation in Reality simulation situation.Uneven distribution when micropore is arranged on canvas, at two ends, the local micropore of corresponding intake and return aircourse is arranged some more, and other place is less, and how many concrete of its layout is determined by experiment, to meet the requirements of inleakage; Exhaust ventilation machine can produce different air quantity, with the asynchronous situation of leaking out of ventilation volume in Reality simulation situation;
Gas suction pump can produce different negative pressure of suctions, with the situation of extraction negative pressure different in Reality simulation situation;
Will be scattered in goaf coal and rock not of uniform size, goaf situation and spontaneous combustionof coal situation in Reality simulation situation;
Temperature pick up and co sensor to be arranged, to monitor spontaneous combustionof coal situation in goaf;
Air velocity transducer will be arranged, to grasp the ventilation volume of return aircourse in time in return aircourse;
Also temperature pick up and co sensor will be arranged, to monitor spontaneous combustionof coal situation in return aircourse;
Intake and work plane also will arrange air velocity transducer, to grasp the inleakage in goaf in time;
Gas train is connected with goaf air inlet pipe, with adjacent layer in Reality simulation situation and lose coal ceaselessly to goaf drainage gas;
The flow of gas drainage system pipeline mainly monitored by drainage system flow meter, and vacuum table mainly monitors the negative pressure of suction of gas drainage system, analyzes the relation between gas pumping and spontaneous combustionof coal.
The job step of specific embodiment is:
First, broken coal and rock not of uniform size are scattering into goaf; Then, separated in goaf and work plane canvas, fixed by canvas, device entirety is debugged; Then, data test acquisition system, ventilation system, gas train, drainage system are opened successively, experiment starts; Finally, when monitored data display co produces, temperature raises, tests and terminate when can judge coal generation spontaneous combustion.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.
Claims (4)
1. easy spontaneous combustion high gas layer goaf gas extraction and a spontaneous combustionof coal analogue experiment installation, is characterized in that, comprises U-shaped work plane coal mining system, ventilation system, gas train, extraction system, data test acquisition system;
Described U-shaped work plane coal mining system comprises intake, return aircourse, work plane, goaf;
Described ventilation system comprises the exhaust ventilation machine and annex thereof of being located at exit, described return aircourse;
Described gas train comprises gas bottle, valve, pressure meter, gas feeding pipe;
Described extraction system comprises gas suction pump, gas drainage pipeline, valve, flow meter, B/P EGR Back Pressure Transducer EGR;
The outlet of described gas feeding pipe and the import of described gas drainage pipeline extend in described goaf respectively;
Described data test acquisition system comprises the air velocity transducer being located at described intake, return aircourse and work plane, also comprises gas concentration sensor, temperature pick up and the co sensor of being located at described goaf;
Described air velocity transducer, gas concentration sensor, temperature pick up, co sensor are connected with Industrial Personal Computer (IPC) respectively by data acquisition module;
Separate with canvas between described work plane and goaf, multiple micropore arranged by canvas simultaneously.
2. easy spontaneous combustion high gas layer goaf gas extraction according to claim 1 and spontaneous combustionof coal analogue experiment installation, it is characterized in that, described return aircourse and work plane are also respectively equipped with gas concentration sensor, temperature pick up and co sensor.
3. easy spontaneous combustion high gas layer goaf gas extraction according to claim 1 and spontaneous combustionof coal analogue experiment installation, it is characterized in that, micropore uneven distribution on described canvas, the micropore at the position of the corresponding intake in canvas two ends and return aircourse arranges that quantity arranges quantity more than the micropore in the middle part of canvas.
4. easy spontaneous combustion high gas layer goaf gas extraction according to claim 1 and spontaneous combustionof coal analogue experiment installation, it is characterized in that, described work plane is provided with alarm.
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| CN201410064942.6A CN103775122B (en) | 2014-02-25 | 2014-02-25 | Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation |
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| CN201410064942.6A CN103775122B (en) | 2014-02-25 | 2014-02-25 | Easy spontaneous combustion high gas layer goaf gas extraction and spontaneous combustionof coal analogue experiment installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106703867A (en) * | 2017-01-23 | 2017-05-24 | 中国矿业大学 | Coal mine goaf coal spontaneous combustion flow field simulation experiment table |
| CN110196315A (en) * | 2019-05-30 | 2019-09-03 | 余明高 | A kind of gas solid extraction and Study on Protection of Spontaneous Combustion coupling test system |
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| CN110196315A (en) * | 2019-05-30 | 2019-09-03 | 余明高 | A kind of gas solid extraction and Study on Protection of Spontaneous Combustion coupling test system |
| CN110196315B (en) * | 2019-05-30 | 2021-08-17 | 余明高 | Gas three-dimensional extraction and goaf natural ignition coupling test system |
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| CN103775122A (en) | 2014-05-07 |
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