CN105842281A - Analog simulation test device for temperature field distribution rule in coal mine goaf - Google Patents
Analog simulation test device for temperature field distribution rule in coal mine goaf Download PDFInfo
- Publication number
- CN105842281A CN105842281A CN201610268239.6A CN201610268239A CN105842281A CN 105842281 A CN105842281 A CN 105842281A CN 201610268239 A CN201610268239 A CN 201610268239A CN 105842281 A CN105842281 A CN 105842281A
- Authority
- CN
- China
- Prior art keywords
- temperature
- test box
- analog simulation
- coal mine
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
- G01N25/22—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity on combustion or catalytic oxidation, e.g. of components of gas mixtures
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
An analog simulation test device for the temperature field distribution rule in a coal mine goaf comprises a test box, a test box cover plate, a porous baffle, a solid baffle, a heat source loading device, a temperature monitoring device and an air supply device. The test box is in a cuboid shape, the upper end of the test box is sealed through the test box cover, and baffle grooves are formed in the inner walls of the long-side faces of the test box and used for fixing the porous baffle or the solid baffle. Temperature measuring holes are further formed in the long-side faces of the test box, the heat source loading device heats a cavity of the test box through one temperature measuring hole, and the temperature monitoring device monitors the temperature in the cavity of the test box through the other temperature measuring holes. An air inlet and an air outlet are formed in one short-side face of the test box, and the air supply device supplies air into the cavity of the test box through the air inlet. By means of the analog simulation test device, the heat transfer process in the spontaneous combustion process of loose coal can be perfectly simulated, and then the heat transfer rule in the simulated goaf can be obtained.
Description
Technical field
The present invention relates to a kind of analog simulation assay device, especially a kind of coal mine gob distribution law of temperature field analog simulation assay device.
Background technology
Coal in China spontaneous combustion disaster is serious, and easy spontaneous combustion, spontaneous progress mining area are distributed more widely, and the pit mining spontaneous fire seam of 56%, the big-and-middle-sized mining area of more than 70% exists spontaneous fire and threatens, and the coal-mine fire of 90% is caused by spontaneous combustionof coal.2008 to 2014, domestic colliery breaking out of fire accident 38, dead 389 people altogether.Nearly 5 years, in domestic generation gas explosion accident, more than 70% was caused by concealed fire.According to statistics, China has found out at the coal-field fire 56 of burning, gross area 720km2, integrated distribution in Xinjiang, Inner Mongol, Gansu, Ningxia, Qinghai, Shanxi, 7 provinces and regions such as Shaanxi；Just there are nearly 10,000,000 m in only Xinjiang and Ningxia2Flame range, every year because of coal spontaneous combustion lose nearly 9,000,000 t of coal amount.
Development along with preventing and extinguishing fire of coal mine technology, the domestic a series of preventing and extinguishing fire of coal mine technical systems such as including coal oxidation reaction theory, Period of Coal Seam Spontaneous Combustion prediction technology, coal seam concealed fire Detection Techniques, fireproofing extinguishing materials and equipment that define, and effectively applied on colliery.
But, along with country's " eliminating the backward production facilities " policy is progressively implemented, because of the small coal mine rate of extraction low (generally below 15%), operating capability is weak, and coyoting is dug in private, forms the oldest dead zone being difficult to administer；The Northwest, super large mining height, combines the popularization quickly coal-mining technique such as adopting, and for pursuing high productive capacity, forms the oldest dead zone being difficult to administer；Goaf is because leaking out and spontaneous combustion for a long time.Especially for mining of closed distance coal seam group, because of particular locations such as coal spontaneous combustion closed area, tunnel height roof fall, Fragmentation Coal Pillar and goafs, high temp fire point is more hidden, it is difficult to find, if slightly neglected, just gas (coal dust) may be caused to explode (burning), cause huge loss.
For effectively detection concealed fire position, the location of the main concealed fire using isotope radon method Detection Techniques, transient electromagnetic detecting technology, bore detecting technology, gas marker Detection Techniques and distributed light temperature detection technique etc. to carry out coal mine gob.But isotope radon method Detection Techniques, transient electromagnetic detecting technology, bore detecting technology are mainly detected by the construction of earth's surface, colliery, and the multilamellar Mined-Out Areas for mining of closed distance coal seam group cannot realize being accurately positioned.Gas marker Detection Techniques are affected by goaf air leaking is distinguished and admirable, can only qualitative analysis coal spontaneous get angry state, and distributed optical fiber temperature measurement technology is the most relatively advanced Residual coal in goaf formula temperature monitoring technique, but optical fiber temperature-measurement is still contact temperature monitoring and judges, it is impossible to the temperature of the coal spontaneous combustion burning things which may cause a fire disaster of enough effective judging distance optical fiber paving location certain distances.The research that coal spontaneous is got angry both at home and abroad, is all devoted to coal spontaneous ignition mechanism aspect, and less to the research of the transfer law of heat in loose coal spontaneous combustion process, and is typically also only limitted to underground site research, is greatly limited, and achievement in research is undesirable.
Summary of the invention
For more preferably studying the transfer law of heat in loose coal spontaneous combustion process, the invention provides a kind of coal mine gob distribution law of temperature field analog simulation assay device.
The technical solution used in the present invention is as follows:
A kind of coal mine gob distribution law of temperature field analog simulation assay device, including test casing, tests box cover, hole baffle plate, entity baffle plate, loads heat power supply device, device for detecting temperature and feeder；Described test casing is rectangular-shaped, and upper end, by described test casing cover closure, forms baffle plate groove at its face, long limit inwall, is used for fixing described hole baffle plate or entity baffle plate；Described test casing also has thermometer hole on its face, long limit, described proof box body cavity body is heated by described loading heat power supply device by thermometer hole one of them described, and described device for detecting temperature monitors the temperature in described proof box body cavity body by remaining described thermometer hole；Described test casing has air inlet and gas outlet on its minor face face, and described feeder is supplied in described proof box body cavity body by described air inlet.
In the distribution law of temperature field analog simulation assay device of above-mentioned coal mine gob, described air inlet is connected with sebific duct one end, and the described sebific duct other end passes sequentially through reducer pipe and four-way pipe and is connected with described feeder.
In the distribution law of temperature field analog simulation assay device of above-mentioned coal mine gob, described loading heat power supply device includes temperature control box, heat point source, heating power supply line and thermometric line, described heat point source loads in one of them described thermometer hole, is connected with described temperature control box by described heating power supply line and thermometric line.
In the distribution law of temperature field analog simulation assay device of above-mentioned coal mine gob, described device for detecting temperature includes that temperature recording unit and temperature sensor, described temperature sensor load in remaining described thermometer hole, is connected with described temperature recording unit by wire.
In the distribution law of temperature field analog simulation assay device of above-mentioned coal mine gob, described entity baffle plate is for adjusting the effect of described proof box body cavity size, and described hole baffle plate is used for simulating coal-face and gob edge.
Use above-mentioned coal mine gob distribution law of temperature field analog simulation assay device, it is achieved the step of heterogeneous goaf deathtrap scope natural combustion of remaining coal temperature distributing rule research is as follows:
A) the described heat point source of described loading heat power supply device is installed in one of them described thermometer hole of described test casing, and fasten with movable sealing joint；
B) by several described temperature sensors of described device for detecting temperature, install to remaining described thermometer hole of described test casing, and fasten with movable sealing joint；
C) adjust described air inlet port dimensions, described sebific duct, reducer pipe, four-way pipe and ready-packaged joint are all installed, and fasten with anchor ear, stop gas leakage, use high-pressure rubber pipe to be connected with described ready-packaged joint described feeder；
D) being loaded by described hole baffle plate in the described baffle plate groove of described test casing, described entity baffle plate decides whether to use according to intending simulation goaf dimensional conditions；
E) in described proof box body cavity body, loose coal sample is loaded；
F) by with bolts with described test casing for described test box cover, using asbestos cord as sealing gasket；
G) test ready, start described feeder, air feed in described proof box body cavity body, start described loading heat power supply device, control the temperature of described heat point source, the temperature of device for detecting temperature described on line real-time monitoring, and obtain data；
H) regulating wind supply quantity and the temperature value of described heat point source of described feeder respectively, consistently online monitors the temperature data of described device for detecting temperature in real time；
I) step h) is repeated；
J) data obtained are imported computation model, calculate loose coal heat conduction parameters, extend and obtain goaf loose coal distribution law of temperature field.
The technique scheme of the present invention has the advantage that compared to existing technology
1. the coal mine gob distribution law of temperature field analog simulation assay device that the present invention provides, loose coal sample auto-ignition can be simulated with simulation loading thermal source, and goaf air leaking situation, accordingly, it is capable to after in being enough in analysis goaf, hidden region occurs spontaneous combustion, under distinguished and admirable effect, the Transfer Parameters of heat, the moving direction of thermal source and speed, after utilizing other monitorings such as distribution type fiber-optic system and analytical equipment to obtain quantitative parameter, it is judged that position and the development trend of concealed fire are provided fundamental basis.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, being embodied as case and combining accompanying drawing below according to the present invention, the present invention is further detailed explanation, wherein
Fig. 1 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device test casing structural representation；
Fig. 2 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device test casing covering plate structure schematic diagram；
Fig. 3 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device hole baffle arrangement schematic diagram；
Fig. 4 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device entity baffle arrangement schematic diagram；
Fig. 5 is that coal mine gob of the present invention distribution law of temperature field analog simulation assay device loads heat power supply device structural representation；
Fig. 6 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device device for detecting temperature structural representation；
Fig. 7 is coal mine gob of the present invention distribution law of temperature field analog simulation assay device feeder structural representation.
Being labeled as in figure: 1-tests casing, 2-tests box cover, 3-hole baffle plate, 4-entity baffle plate, 5-loads heat power supply device, 6-device for detecting temperature, 7-feeder, 101-baffle plate groove, 102-thermometer hole, 103-air inlet, 104-gas outlet, 105-sebific duct, 106-reducer pipe, 107-four-way pipe, 501-temperature control box, 502-heat point source, 503-heating power supply line, 504-thermometric line, 601-temperature recording unit, 602-temperature sensor.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Fig. 1-7 is shown that the preferred embodiment of coal mine gob of the present invention distribution law of temperature field analog simulation assay device.
Described coal mine gob distribution law of temperature field analog simulation assay device, including test casing 1, tests box cover 2, hole baffle plate 3, entity baffle plate 4, loads heat power supply device 5, device for detecting temperature 6 and feeder 7；Described test casing 1 is in rectangular-shaped, and upper end is closed by described test box cover 2, forms baffle plate groove 101 at its face, long limit inwall, is used for fixing described hole baffle plate 3 or entity baffle plate 4；Described test casing 1 also has thermometer hole 102 on its face, long limit, described test casing 1 cavity is heated by described loading heat power supply device 5 by thermometer hole one of them described 102, and described device for detecting temperature 6 monitors the temperature in described test casing 1 cavity by remaining described thermometer hole 102；Described test casing 1 has air inlet 103 and gas outlet 104 on its minor face face, and described feeder 7 is supplied in described test casing 1 cavity by described air inlet 103.
In the present embodiment, described air inlet 103 is connected with sebific duct 105 one end, and described sebific duct 105 other end passes sequentially through reducer pipe 106 and four-way pipe 107 and is connected with described feeder 7.
In the present embodiment, described loading heat power supply device 5 includes temperature control box 501, heat point source 502, heating power supply line 503 and thermometric line 504, described heat point source 502 loads in one of them described thermometer hole 102, is connected with described temperature control box 501 by described heating power supply line 503 and thermometric line 504.
In the present embodiment, described device for detecting temperature 6 includes that temperature recording unit 601 and temperature sensor 602, described temperature sensor 602 load in remaining described thermometer hole 102, is connected with described temperature recording unit 601 by wire.
In the present embodiment, described test casing and described test box cover are three layers, and its internal layer is the A3 carbon structural steels that 7mm is thick, tests coal sample for support；Middle level is the asbestos board that 20mm is thick, for heat insulation；Outer layer is the A3 carbon structural steels that 3mm is thick, for protecting described test casing.
Obviously, above-described embodiment is only for clearly demonstrating example, and not restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the obvious change thus extended out or variation still in protection scope of the present invention among.
Claims (4)
1. a coal mine gob distribution law of temperature field analog simulation assay device, it is characterised in that:
Including test casing (1), test box cover (2), hole baffle plate (3), entity baffle plate (4), add
Heat-carrying source apparatus (5), device for detecting temperature (6) and feeder (7)；
Described test casing (1) is in rectangular-shaped, and upper end is closed by described test box cover (2),
Form baffle plate groove (101) at its face, long limit inwall, be used for fixing described hole baffle plate (3) or entity gear
Plate (4)；
Described test casing (1) also has thermometer hole (102) on its face, long limit, and described loading thermal source fills
Put (5) by thermometer hole one of them described (102), described test casing (1) cavity to be heated,
Described device for detecting temperature (6) monitors described test casing (1) by remaining described thermometer hole (102)
Temperature in cavity；
Described test casing (1) has air inlet (103) and gas outlet (104) on its minor face face,
Described feeder (7) is carried out in described test casing (1) cavity by described air inlet (103)
Supply.
Coal mine gob the most according to claim 1 distribution law of temperature field analog simulation test dress
Put, it is characterised in that: described air inlet (103) is connected with sebific duct (105) one end, described sebific duct (105)
The other end passes sequentially through reducer pipe (106) and four-way pipe (107) is connected with described feeder (7).
Coal mine gob the most according to claim 2 distribution law of temperature field analog simulation test dress
Put, it is characterised in that: described loading heat power supply device (5) includes temperature control box (501), heat point source (502),
Heating power supply line (503) and thermometric line (504), described heat point source (502) loads described in one of them
In thermometer hole (102), by described heating power supply line (503) and thermometric line (504) and described temperature control
Case (501) connects.
Coal mine gob the most according to claim 3 distribution law of temperature field analog simulation test dress
Put, it is characterised in that: described device for detecting temperature (6) includes temperature recording unit (601) and temperature
Sensor (602), described temperature sensor (602) loads in remaining described thermometer hole (102), logical
Cross wire to be connected with described temperature recording unit (601).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268239.6A CN105842281A (en) | 2016-04-28 | 2016-04-28 | Analog simulation test device for temperature field distribution rule in coal mine goaf |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610268239.6A CN105842281A (en) | 2016-04-28 | 2016-04-28 | Analog simulation test device for temperature field distribution rule in coal mine goaf |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105842281A true CN105842281A (en) | 2016-08-10 |
Family
ID=56589160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610268239.6A Pending CN105842281A (en) | 2016-04-28 | 2016-04-28 | Analog simulation test device for temperature field distribution rule in coal mine goaf |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105842281A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153674A (en) * | 2016-08-19 | 2016-11-23 | 西安科技大学 | A kind of analog simulation system of underground coal fire evolutionary process |
| CN106501310A (en) * | 2016-10-25 | 2017-03-15 | 中国矿业大学(北京) | Based on the oxidization of remained coal intensification simulation experiment method that goaf air parameter is surveyed |
| CN107402279A (en) * | 2017-08-13 | 2017-11-28 | 煤炭科学技术研究院有限公司 | A kind of thermal source loading device of spontaneous combustion of simulated coal |
| CN110220935A (en) * | 2019-07-16 | 2019-09-10 | 山西省交通规划勘察设计院有限公司 | A kind of gangue autoignition test device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1234661A1 (en) * | 1984-12-25 | 1986-05-30 | Тульский Ордена Трудового Красного Знамени Политехнический Институт | Method of detecting the heart of self-igntion of coal in coal body |
| CN104483350A (en) * | 2014-11-21 | 2015-04-01 | 中国矿业大学(北京) | Device for simulating programmed temperature rising and adiabatic oxidation of coal |
| CN104775849A (en) * | 2015-03-23 | 2015-07-15 | 山东科技大学 | System and method for monitoring gas and coal spontaneous combustion coupling disasters on coal mine stope |
| CN105181165A (en) * | 2015-10-27 | 2015-12-23 | 河南理工大学 | Device system for testing CO release and temperature change in coal incising process |
| CN105372397A (en) * | 2015-12-16 | 2016-03-02 | 华北科技学院 | Simulating experiment device of goaf spontaneous ignition |
| CN205679555U (en) * | 2016-04-28 | 2016-11-09 | 煤炭科学技术研究院有限公司 | A kind of coal mine gob distribution law of temperature field analog simulation experimental rig |
-
2016
- 2016-04-28 CN CN201610268239.6A patent/CN105842281A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1234661A1 (en) * | 1984-12-25 | 1986-05-30 | Тульский Ордена Трудового Красного Знамени Политехнический Институт | Method of detecting the heart of self-igntion of coal in coal body |
| CN104483350A (en) * | 2014-11-21 | 2015-04-01 | 中国矿业大学(北京) | Device for simulating programmed temperature rising and adiabatic oxidation of coal |
| CN104775849A (en) * | 2015-03-23 | 2015-07-15 | 山东科技大学 | System and method for monitoring gas and coal spontaneous combustion coupling disasters on coal mine stope |
| CN105181165A (en) * | 2015-10-27 | 2015-12-23 | 河南理工大学 | Device system for testing CO release and temperature change in coal incising process |
| CN105372397A (en) * | 2015-12-16 | 2016-03-02 | 华北科技学院 | Simulating experiment device of goaf spontaneous ignition |
| CN205679555U (en) * | 2016-04-28 | 2016-11-09 | 煤炭科学技术研究院有限公司 | A kind of coal mine gob distribution law of temperature field analog simulation experimental rig |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153674A (en) * | 2016-08-19 | 2016-11-23 | 西安科技大学 | A kind of analog simulation system of underground coal fire evolutionary process |
| CN106501310A (en) * | 2016-10-25 | 2017-03-15 | 中国矿业大学(北京) | Based on the oxidization of remained coal intensification simulation experiment method that goaf air parameter is surveyed |
| CN106501310B (en) * | 2016-10-25 | 2019-02-12 | 中国矿业大学(北京) | Oxidization of remained coal heating simulation experiment method based on the actual measurement of goaf air parameter |
| CN107402279A (en) * | 2017-08-13 | 2017-11-28 | 煤炭科学技术研究院有限公司 | A kind of thermal source loading device of spontaneous combustion of simulated coal |
| CN110220935A (en) * | 2019-07-16 | 2019-09-10 | 山西省交通规划勘察设计院有限公司 | A kind of gangue autoignition test device |
| CN110220935B (en) * | 2019-07-16 | 2024-01-30 | 山西省交通规划勘察设计院有限公司 | Gangue spontaneous combustion test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Liu et al. | Coal spontaneous combustion and N2 suppression in triple goafs: A numerical simulation and experimental study | |
| CN205679555U (en) | A kind of coal mine gob distribution law of temperature field analog simulation experimental rig | |
| Zhuo et al. | The impact of surface air leakage on coal spontaneous combustion hazardous zone in gob of shallow coal seams: A case study of Bulianta Mine, China | |
| Lu et al. | Method for prevention and control of spontaneous combustion of coal seam and its application in mining field | |
| Kong et al. | Application of electromagnetic radiation detection in high-temperature anomalous areas experiencing coalfield fires | |
| Zhang et al. | Numerical simulation on methane-hydrogen explosion in gas compartment in utility tunnel | |
| CN203287341U (en) | Explosion experiment device for unevenly distributed methane gas | |
| CN105842281A (en) | Analog simulation test device for temperature field distribution rule in coal mine goaf | |
| Pan et al. | New technological partition for “three zones” spontaneous coal combustion in goaf | |
| CN108333291B (en) | Experimental device and experimental method for simulating goaf natural ignition | |
| Li et al. | Acoustic emission monitoring technology for coal and gas outburst | |
| Wang et al. | Analysis of precursor information for coal and gas outbursts induced by roadway tunneling: A simulation test study for the whole process | |
| Li et al. | Experimental study on the infrared thermal imaging of a coal fracture under the coupled effects of stress and gas | |
| CN109655575A (en) | It is a kind of to simulate spontaneous combustion in goaf and three experimental systems and method with distribution | |
| Wang et al. | Study on the dynamic evolution law of spontaneous coal combustion in high-temperature regions | |
| CN107247127A (en) | Consider the spontaneous combustion in goaf model test platform and test method of atmospheric pressure | |
| CN106153674A (en) | A kind of analog simulation system of underground coal fire evolutionary process | |
| Zhao et al. | Oxygen distribution and gaseous products change of coal fire based upon the semi-enclosed experimental system | |
| Wang et al. | Temperature field distribution and parametric study in underground coal gasification stope | |
| Wen et al. | A method for detecting hidden fire source in deep mine goafs based on radon measurement and its experimental verification | |
| Niu et al. | Experimental study and field verification of stability monitoring of gas drainage borehole in mining coal seam | |
| Chen et al. | Research and prevention of upper remaining coal spontaneous combustion induced by air leakage in multi-inclination regenerated roof: A case study in the Luwa coal mine, China | |
| Guo et al. | Full-scale experimental study on fire characteristics induced by double fire sources in a two-lane road tunnel | |
| Gu et al. | Spontaneous combustion of coal in regenerated roof and its prevention technology | |
| Lang et al. | Heat and mass transfer of liquid nitrogen in coal porous media |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |