CN101329223A - Spontaneous combustion explosion experiment system of coal slack mountain - Google Patents
Spontaneous combustion explosion experiment system of coal slack mountain Download PDFInfo
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- CN101329223A CN101329223A CNA2007101233121A CN200710123312A CN101329223A CN 101329223 A CN101329223 A CN 101329223A CN A2007101233121 A CNA2007101233121 A CN A2007101233121A CN 200710123312 A CN200710123312 A CN 200710123312A CN 101329223 A CN101329223 A CN 101329223A
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Abstract
The invention provides a coal gangue dump spontaneous combustion explosion experiment system, which is characterized in that a hollow cylinder is laid by stone bricks; bricks are laid on the internal lower surface of the hollow cylinder; coal gangues are accumulated inside the cylinder; a heating source and a thermocouple are embedded into the coal gangues; a pressure sensing probe, a flue gas sensing probe and a spraying nozzle are arranged above the coal gangues. The experiment system of the invention adopts an external heating method to quicken the combustion reaction velocity of the coal gangue samples, reduce the size of experiment, shorten the experimental period and iconically reflect the effects of rainfall on the explosion of the spontaneous combustion coal gangue dump. The experiment system of the invention has flexible operation, simple, safe and reliable structure, can be repeatedly used and can analyse the factor inducing the explosion of the spontaneous combustion coal gangue dump under the raining condition by the collected data. The experiment system of the invention can carry out the spontaneous combustion explosion experiments for the urban domestic garbage, and the coal spontaneous combustion experiments, etc.
Description
Technical field
The present invention relates to a kind of experimental system, be specifically related to a kind of spontaneous combustion explosion experiment system of coal slack mountain.
Background technology
Gangue is to produce " barren rock " under the coal mine in the tunnelling process, promptly forms coal gangue hill behind the bulk deposition of ground.At present, total burden of national gangue has reached more than 3,000,000,000 t, forms seat surplus the coal gangue hill 1500, takes up an area of 7 * 10
7m
2To the increase of energy demand, coal mining intensity is strengthening along with China's rapid economy development, and the gangue total amount is with the speed increment of 1.5～2.0 hundred million t/y.
To the understanding of coal gangue hill harm, rest on its pollution aspect at present mostly to environment.Yet many cases show that coal gangue hill is more and more serious in the problem that secure context exists, and particularly spontaneous combustion of coal gangue hill, blast problem cause tremendous loss for colliery enterprise.For example: tafelberg, Henan Province Coal Industry Group company four pit coal waste dumps produce twice blast because of it kicked off in heavy rains, nearly 1.8 * 10
4m
3, about 3.3 * 10
4The gangue of t is thrown more than 300 outside the m, causes 8 people's death, 21 people's severe injuries altogether, and other 102 personnel are subjected to burning in various degree.
Though it is not high that coal gangue hill blast causes the occurrence frequency of disaster, because of it has suddenly, and scale is big, often causes great casualties and economic loss.Carry out coal gangue hill blast and form mechanism research, the minimizing mine safety accidents had important theory and a realistic meaning.Based on this, making up a kind of experimental system, to come modeling effort spontaneous combustion of coal gangue hill blast process be extremely important.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of rational in infrastructure, flexible operation, and it is convenient to implement, the coal gangue hill explosion test system of artificial controlled and data automatic recording.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, assemble a hollow cylinder with the stone brick, lay fragment of brick below in the hollow cylinder, gangue is piled up in the cylinder, bury heating source and thermopair in the bastard coal clitter underground, the top of bastard coal clitter settles pressure sensing probe, flue gas sensing probe, water to drench shower nozzle.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, the below of described hollow cylinder wall is provided with ventilating opening.Entanglement or sealing are set above the hollow cylinder.
The thickness of the fragment of brick of being laid below the hollow cylinder of the present invention is not less than 20cm, the pyrolytic damage of avoiding the high temperature gangue that the laboratory is caused.Body of wall
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, the thickness of the body of wall of described hollow cylinder should be greater than 10cm, and the blast of gangue damages and equipment is damaged personnel on every side when preventing to test.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described gangue are piled up and are shaped as taper or level accumulation.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described heating source links to each other with the Control of Voltage instrument, regulates the heating-up temperature of gangue inside.Described heating source is that 1-4 is individual, power is the electric furnace heating wire of 500KW-2500KW, and circuit is done insulation sleeve with teflon.Described thermopair quantity is 6～9, level and vertical direction matrix arrangements.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described pressure sensing probe is arranged on 30cm-40cm place, bastard coal clitter top, and quantity is 1-3.Described pressure sensing probe connects the pressure conversion instrument, and the pressure conversion instrument links to each other with data processor.The probe outside is a water pipe precaution, and the sense line that links to each other with probe entangles with asbestos pipe.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described flue gas sensing probe are placed in 40cm-50cm place, bastard coal clitter top, be connected with flue gas analyzer through the data conveyer line, and the data of being gathered are transferred to data processor.The sense line that is connected with flue gas probe entangles with asbestos pipe, guarantees not being damaged of sense line.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described water drench shower nozzle and are installed on the crane, and be positioned at the bastard coal clitter directly over, adjust the spray height as required up and down.Water drenches shower nozzle and connects water tank by water pump.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, described operation steps is, open heating source earlier to the heating of gangue sample, and start flue gas sensing probe and thermopair, all gases composition that the burning of continuous monitoring gangue produces and the internal temperature situation of change of bastard coal clitter; When thermocouple monitoring when gangue is burned to appearance, starting pressure sensing probe, and fetch boiling water and drench shower nozzle and spray.
Experimental system of the present invention adopts outside heating method to bring out the gangue burning, utilizes the burning composition of flue gas analyzer test gangue, follows the tracks of the burning progress by thermocouple monitoring simultaneously.After temperature of combustion reaches certain value, it is carried out the water spray, the influence that simulated rainfall is blasted to self-igniting coal gangue, and utilize the pressure sensing probe to monitor the spray detonation pressure power of gangue.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention also can be applicable to coal spontaneous combustion process, domestic waste blast carrying out simulated experiment.
Experimental system of the present invention has following characteristics:
1. owing to adopt outside heating method to quicken the combustion velocity of gangue sample, reduce experimental size, shortened experimental period.
2. spray system adopts the water pump pressurization, and the flow by adjustable in pressure joint water spray more can reflect the influence that rainfall is blasted to self-ignition coal gangue hill visually.
3. the flue gas detection has been merged in the present invention, pressure is surveyed and the temperature detection is one.
4. flexible operation of the present invention, simple in structure, and safe and reliable.
5. the present invention is reusable, and the data of gathering can analyze self-ignition coal gangue hill brings out blast under the condition of rainfall internal cause.
6. provision for thermal insulation of the present invention, earth leakage protection, probe safeguard measure are safe and reliable.
7. utilize this experimental system except can carrying out gangue spontaneous combustion explosion test, can also utilize this experimental system to carry out domestic waste spontaneous combustion explosion test, and the coal spontaneous combustion experiment etc.
Description of drawings
Fig. 1 is the experimental system synoptic diagram
Fig. 2 is the schematic top plan view of experimental system
Reference numeral
1 water pump, 2 water tanks, 3 Control of Voltage instrument, 4 bastard coal clitters, 5 heating sources, 6 thermopairs, 7 pressure sensings probe, 8 flue gas sensing probes, 9 entanglement, 10 water drench shower nozzle, 11 hollow cylinders, 12 data conveyer lines, 13 cranes, 14 pressure conversion devices, 15 flue gas analyzers, 16 temperature transition modules, 17 data processors.
Embodiment
Embodiment 1
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, assemble the hollow hexagonal prism 11 that a peripheral length of side is 110cm with the stone brick, height is 120cm, body of wall is the high temperature resistant fragment of brick of thickness 11cm, and two high 10cm, the ventilating opening of wide 20em are left in every face wall body below, be the fragment of brick of 20cm for thickness below prismatic, 1 ton of gangue 4 is piled up in the cylinder, piles up to be shaped as taper, and the bastard coal clitter is buried heating source 5 and thermopair 6 underground for 4 li.Described heating source 5 links to each other with Control of Voltage instrument 3, is used to regulate the heating-up temperature of bastard coal clitter inside.Described heating source 5 is 1～4 electric furnace heating wire that power is 500KW-2500KW, and circuit is done insulation sleeve with teflon.Described thermopair 6 quantity are 9, and level and vertical direction matrix arrangements detect the gangue temperature inside and change.
The 30cm place is provided with a pressure sensing probe 7 above gangue.Described pressure sensing probe 7 connects on the pressure conversion device 14, and pressure conversion instrument 14 links to each other with data processor 17, automatically record data.Pressure sensing probe 7 outsides are water pipe precaution, entangle with asbestos pipe with pressure sensing probe 7 sense lines that link to each other.
40cm place, bastard coal clitter top arrangement flue gas sensing probe 8 is connected with flue gas analyzer 15 through data conveyer line 12, and the data of being gathered are sent to data processor 17 handle.The sense line that is connected with flue gas sensing probe 8 entangles with asbestos pipe, guarantees that sense line is not damaged.
According to the temperature and the smoke components of record, can analyze the main gas componant that under corresponding temperature, is produced, also can calculate the gangue internal temperature simultaneously, for the spontaneous combustion of control gangue proposes index gas in the main gas componant of learning.
Described water drenches shower nozzle 10 and is installed on the crane 13, as required the scope of up-down adjustment spray.Water drenches shower nozzle 10 and is connected to water tank 2 by water pump 1, and the required water yield is forced into shower nozzle 10 through water pump 1 with the water of 2 li in water tank.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, after the debugging of the connection of all devices and instrument is intact, install entanglement 9 above prism, the impelling that is used to prevent to explode goes out hot gangue personnel is on every side damaged and equipment is damaged, and guarantees the safety of experimentation.
Above-mentioned experimental system is prepared with regard to after all, the experimental implementation step is, open 5 pairs of gangue sample heating of heating source earlier, and start flue gas sensing probe 8 and thermopair 6, all gases composition that the burning of continuous monitoring gangue produces and the internal temperature situation of change of bastard coal clitter; When thermopair 6 monitors gangue when being burned to appearance, starting pressure sensing probe 7, and fetch boiling water and drench shower nozzle 10 and spray.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, but simulated rainfall is to the situation that influences of spontaneous combustion waste dump blast, and monitor the blast process of gangue by the pressure sensing probe through water spray back, the pressure that captures bastard coal clitter top by the pressure sensing probe changes live, can similar derivation self-ignition coal gangue hill brisance according to experiment condition and boundary condition, and can set up by smoke-detecting system and temperature-sensing system the temperature of combustion of self-igniting coal gangue and burning smoke components between relation, for the foundation in self-igniting coal gangue temperature field provides laboratory facilities, for sensitive indicator is pointed out in the foundation of self-ignition coal gangue hill early warning explosion system.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention by the detailed data that each detection system write down is carried out analysis-by-synthesis, can draw the index and the reason of bringing out the spontaneous combustion of waste heap blast.
Embodiment 2
With embodiment 1 described system and device, the 40cm place is provided with a pressure sensing probe 7 above gangue, and 50cm place, bastard coal clitter top settles flue gas sensing probe 8.Level is piled up 4 tons of gangues, its objective is the situation of change when meeting rainfall into inner certain the high temperature place of simulation waste dump.Inside at the bastard coal clitter is buried heating source underground; the resistant to elevated temperatures material protection of circuit; bury thermocouple monitoring internal temperature situation of change simultaneously underground; pressure sensing probe and flue gas sensing probe are installed in bastard coal clitter top; the flue gas sensing probe is gathered smoke components and all the time by the automatic record of data processor; temperature and smoke components according to record; can analyze the main gas that under corresponding temperature, is produced; also can calculate the gangue internal temperature simultaneously, for the spontaneous combustion of control gangue proposes index gas in the main gas componant of learning.When gangue will burn appearance, carry out the water spray, the water of water spray is by water pump pressurization ejection, and injection flow rate is to determine the pairing flow of corresponding pressure through repeatedly testing.
By the blast situation of pressure sensing probe monitoring gangue, the pressure that captures bastard coal clitter top by the pressure sensing probe changes live telecast through water spray back, according to experiment condition and boundary condition can similar derivation self-ignition coal gangue hill explosion scene brisance.And can set up by smoke-detecting system and temperature-sensing system the temperature of combustion of self-igniting coal gangue and burning smoke components between relation, for the foundation in self-igniting coal gangue temperature field provides laboratory facilities, for sensitive indicator is pointed out in the foundation of self-ignition coal gangue hill early warning explosion system.
Spontaneous combustion explosion experiment system of coal slack mountain of the present invention, by the detailed data that each detection system write down is carried out analysis-by-synthesis, relatively taper accumulation and level are piled up the influence degree to the self-igniting coal gangue blast, provide foundation for seeking rational coal gangue hill accumulation mode.
Embodiment 3
Utilize experimental system of the present invention that the coal spontaneous combustion process is carried out simulated experiment.With embodiment 1 described system and device; its embodiment is that 2 tons of coal levels are piled up in the experiment table; inside at dump is buried heating source underground; the resistant to elevated temperatures material protection of circuit; bury thermocouple monitoring interior temperature distribution situation simultaneously underground; the flue gas sensing probe is settled in the dump top; the flue gas sensing probe is gathered smoke components and all the time by the automatic record of data processor; temperature and smoke components according to record; can analyze the main gas that under corresponding temperature, is produced; also can calculate the dump internal temperature simultaneously, for the control coal spontaneous combustion proposes index gas in the main gas componant of learning.Set up relation between temperature and the smoke components by measured data, set up the sensitive indicator of coal spontaneous combustion, for control with administer coal spontaneous combustion scientific basis is provided.
Embodiment 4
Utilize experiment porch of the present invention to domestic waste blast carrying out simulated experiment.With embodiment 1 described system and device, its embodiment is that house refuse is piled up in the experiment porch, and carries out compacting.Can allow the house refuse autoxidation burn as required, inside is buried thermocouple monitoring internal temperature situation of change underground when piling up rubbish, the flue gas sensing probe is settled in the rubbish heap top, the flue gas sensing probe is gathered smoke components and all the time by the automatic record of data processor, temperature and smoke components according to record, can analyze the main gas that under corresponding temperature, is produced, also can calculate the rubbish heap internal temperature simultaneously, for control domestic waste spontaneous combustion blast proposes index gas in the main gas componant of learning.Thereby prevent and treat the spontaneous combustion blast of domestic waste targetedly, avoid its spontaneous combustion blast to the pollution of surrounding environment with cause economic loss.
Claims (16)
1, a kind of spontaneous combustion explosion experiment system of coal slack mountain, it is characterized in that, assemble a hollow cylinder (11) with the stone brick, lay fragment of brick below in the hollow cylinder, gangue is piled up in the cylinder, bury heating source (5) and thermopair (6) in the bastard coal clitter underground, the top of bastard coal clitter settles pressure sensing probe (7), flue gas sensing probe (8), water to drench shower nozzle (10).
2, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, the below of described hollow cylinder wall is provided with ventilating opening.
3, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, entanglement (9) or airtight is set above the described hollow cylinder.
4, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, the thickness of the fragment of brick of being laid below the described hollow cylinder is not less than 20cm.
5, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described gangue is piled up and is shaped as taper or level accumulation.
6, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described heating source (5) links to each other with Control of Voltage instrument (3), and circuit is done insulation sleeve with teflon.
According to the described spontaneous combustion explosion experiment system of coal slack mountain of power claim 1, it is characterized in that 7, described heating source (5) is for 1-4 is individual, power is the electric furnace heating wire of 500KW-2500KW.
8, according to the described spontaneous combustion explosion experiment system of coal slack mountain of power claim 1, it is characterized in that described thermopair (6) quantity is 6～9, level and vertical direction matrix arrangements.
9, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described pressure sensing probe (7) is arranged on 30cm-40cm place, bastard coal clitter top, and quantity is 1-3.
10, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described pressure sensing probe (7) connects pressure conversion instrument (14), and the pressure conversion instrument links to each other with data processor (17).
11, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described flue gas sensing probe (8) is placed in 40cm-50cm place, bastard coal clitter top.
12, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described flue gas sensing probe (8) is through being connected with flue gas analyzer (15), and flue gas analyzer (15) connects data processor (17).
13, according to claim 10 or 12 described spontaneous combustion explosion experiment system of coal slack mountain, it is characterized in that described sense line entangles protection with asbestos pipe.
14, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, described water drenches shower nozzle (10) and is installed on the crane (13), and be positioned at the bastard coal clitter directly over, connect water tank (2) by water pump (1).
15, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1, it is characterized in that, described operation steps is, opening heating source (5) earlier heats the gangue sample, and starting flue gas sensing probe (8) and thermopair (6), all gases composition of continuous monitoring gangue burning generation and the internal temperature situation of change of bastard coal clitter are when thermopair (6) monitors gangue when being burned to appearance, starting pressure sensing probe (7), and the pouring shower nozzle (10) of fetching boiling water sprays.
16, spontaneous combustion explosion experiment system of coal slack mountain according to claim 1 is characterized in that, can be applicable to coal spontaneous combustion process, domestic waste blast carrying out simulated experiment.
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| CNA2007101233121A CN101329223A (en) | 2007-06-22 | 2007-06-22 | Spontaneous combustion explosion experiment system of coal slack mountain |
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| CNA2007101233121A CN101329223A (en) | 2007-06-22 | 2007-06-22 | Spontaneous combustion explosion experiment system of coal slack mountain |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794317A (en) * | 2014-01-16 | 2015-07-22 | 辽宁工程技术大学 | Method for determining spontaneous combustion temperature field and combustion depth of slope residual coal |
| CN105259091A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Pressure-bearing broken residual coal permeability evolution and spontaneous combustion characteristic testing device |
| CN110056879A (en) * | 2019-04-25 | 2019-07-26 | 梅丽中 | A kind of biological particles and special equipment for incineration disposal organic liquid waste |
| CN114878125A (en) * | 2022-04-02 | 2022-08-09 | 哈尔滨工程大学 | Explosion water tank and test device that can be used to near field contact explosion test under water |
| CN115680776A (en) * | 2022-11-09 | 2023-02-03 | 中国矿业大学 | Auxiliary analysis device and method for investigation of underground fire and explosion accidents of coal mine |
-
2007
- 2007-06-22 CN CNA2007101233121A patent/CN101329223A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104794317A (en) * | 2014-01-16 | 2015-07-22 | 辽宁工程技术大学 | Method for determining spontaneous combustion temperature field and combustion depth of slope residual coal |
| CN104794317B (en) * | 2014-01-16 | 2017-10-10 | 辽宁工程技术大学 | It is a kind of to determine the residual coal spontaneous combustion thermal field of side slope and the deep method of combustion |
| CN105259091A (en) * | 2015-11-10 | 2016-01-20 | 河南理工大学 | Pressure-bearing broken residual coal permeability evolution and spontaneous combustion characteristic testing device |
| CN105259091B (en) * | 2015-11-10 | 2018-05-15 | 河南理工大学 | Pressure-bearing, which crushes, loses coal permeability evolution and ignition quality test device |
| CN110056879A (en) * | 2019-04-25 | 2019-07-26 | 梅丽中 | A kind of biological particles and special equipment for incineration disposal organic liquid waste |
| CN114878125A (en) * | 2022-04-02 | 2022-08-09 | 哈尔滨工程大学 | Explosion water tank and test device that can be used to near field contact explosion test under water |
| CN115680776A (en) * | 2022-11-09 | 2023-02-03 | 中国矿业大学 | Auxiliary analysis device and method for investigation of underground fire and explosion accidents of coal mine |
| CN115680776B (en) * | 2022-11-09 | 2024-04-02 | 中国矿业大学 | Auxiliary analysis device and method for underground coal mine fire and explosion accident investigation |
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Open date: 20081224 |