CN220251867U - Spontaneous combustion risk measuring device for goaf of coal face - Google Patents
Spontaneous combustion risk measuring device for goaf of coal face Download PDFInfo
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- CN220251867U CN220251867U CN202321100518.3U CN202321100518U CN220251867U CN 220251867 U CN220251867 U CN 220251867U CN 202321100518 U CN202321100518 U CN 202321100518U CN 220251867 U CN220251867 U CN 220251867U
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- 239000003245 coal Substances 0.000 title claims abstract description 66
- 230000002269 spontaneous effect Effects 0.000 title claims abstract description 28
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 26
- 238000012544 monitoring process Methods 0.000 claims abstract description 55
- 238000012806 monitoring device Methods 0.000 claims abstract description 25
- 238000005065 mining Methods 0.000 claims description 36
- 239000013307 optical fiber Substances 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 19
- 238000005086 pumping Methods 0.000 claims description 12
- 239000003570 air Substances 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 4
- 239000012080 ambient air Substances 0.000 claims description 2
- 230000007123 defense Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000004458 analytical method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 5
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- 238000001514 detection method Methods 0.000 description 7
- 230000007613 environmental effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
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- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001345 alkine derivatives Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
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- 239000002243 precursor Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
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- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model provides a spontaneous combustion risk measuring device for a goaf of a coal face, which can monitor the temperature of the goaf of the coal face in the stoping process of the coal face, discover temperature abnormality in time, inhibit the coal naturally in an early stage and have important significance for controlling and preventing the goaf (the working face) from spontaneous ignition, and in order to achieve the purposes, the utility model adopts the following technical scheme: the spontaneous combustion risk measuring device for the goaf of the coal face is characterized by comprising a temperature monitoring device, a gas monitoring device, an industrial ring network and a ground data workbench; the coal face comprises a conveying roadway arranged above the coal face and a track roadway arranged below the coal face. The method is used for disaster monitoring in the goaf of the coal mine, and eliminates faults and accidents at the bud through analysis and prediction of data, so that the method has wide application range and market popularization prospect.
Description
Technical Field
The utility model relates to a coal mine underground coal face goaf spontaneous combustion ignition risk measurement and pre-judgment technology, in particular to a coal mine underground coal face goaf spontaneous combustion risk measurement device and a spontaneous combustion risk monitoring method thereof.
Background
At present, the spontaneous combustion hidden danger prediction mainly adopts a gas index analysis and prediction method. From the spontaneous combustion mechanism of coal, it is known that the natural ignition of coal beds needs to be physically and chemically changed in each period, and some gas is consumed and generated, so that the air condition in the nearby area is changed, and carbon monoxide, alkane, alkene and alkyne gases are generated as the oxygen is reduced and the carbon dioxide is increased. As the temperature increases, the amount of these gases produced also changes. Therefore, the traditional goaf spontaneous combustion hidden danger prediction is to install a beam tube device in the goaf of the coal face to extract the marking gas of the goaf for detection and analysis, and judge the natural ignition degree of coal by using the marking gas generation amount and the change rate of the marking gas to early predict the fire of the coal bed.
The beam tube device is used for monitoring and analyzing goaf gas to judge coal ignition precursors, and the beam tube device has a plurality of defects: the relation between the generation amount of the marking gas and the coal temperature is not completely clear, and is influenced by factors such as wind flow, raw gas components of the coal body, measuring point selection, production process and the like particularly under the complex condition of the site, the development stage of the oxidation spontaneous combustion of the coal is difficult to determine, the accuracy and precision of prediction and forecast are reduced, and the change of the air quantity has great influence on the gas concentration. In the field application, considering the specific environment of the field, particularly that most of spontaneous combustion of coal occurs in goaf or coal pillar, the influence of air leakage condition is extremely large, so that the prediction of spontaneous combustion becomes complex, the oxidation stage of the coal is not easy to be accurately judged, and false alarm or missing alarm is generated.
Disclosure of Invention
The utility model provides a spontaneous combustion risk measuring device and a spontaneous combustion risk monitoring method for a goaf of a coal face, which can monitor the temperature of the goaf of the coal face in the stoping process of the coal face, discover temperature abnormality in time, inhibit the coal naturally in an early stage, have great significance for controlling and preventing the goaf (the working face) from spontaneous ignition, and solve the problems in the technical background.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model relates to a spontaneous combustion risk measuring device for a goaf of a coal face, which comprises a temperature monitoring device, a gas monitoring device, an industrial ring network and a ground data workbench;
the gas monitoring device comprises a laser beam pipe laid on a transportation roadway of a coal face, an air pumping station is arranged at the right end of the laser beam pipe system, the laser beam pipe is used for pumping ambient air at the position, a monitoring substation is arranged at one end of the air pumping station, one end of the monitoring substation is coupled with an industrial looped network, and one end of the industrial looped network is connected with a ground data workstation;
the temperature monitoring device comprises distributed temperature measuring optical cables arranged on the top, the bottom, a transportation lane and four paths of a track lane of the coal face, the distributed temperature measuring optical cables are connected to optical fiber distributed regulators, mining optical fiber distributed regulators are arranged on a substation near the coal face, and one end of each mining optical fiber distributed regulator is coupled with an industrial ring network;
the gas monitoring device and the temperature monitoring device are coupled at an industrial ring network access part, and the industrial ring network is connected to a ground data workbench.
Preferably, the monitoring substation is internally provided with a beam pipe system host, a mining flameproof and intrinsically safe direct current stabilized power supply, a mining intrinsically safe beam pipe monitoring gas pretreatment control box, a mining intrinsically safe Ethernet switch and a gas sampling pump for monitoring the underground beam pipe of the coal mine, the underground laser beam pipe of the coal mine is connected with the gas sampling pump, the gas sampling pump is connected with the beam pipe system host, the mining intrinsically safe beam pipe monitoring gas pretreatment control box controls the beam pipe system host to analyze the collected gas, the data input of the mining intrinsically safe beam pipe monitoring gas pretreatment control box is connected with the mining intrinsically safe Ethernet switch, the mining intrinsically safe Ethernet switch is coupled with an industrial ring network,
the mining flameproof and intrinsically safe direct current stabilized power supply provides power for a beam pipe system host, a mining intrinsically safe beam pipe monitoring gas pretreatment control box, a mining intrinsically safe Ethernet switch and a gas sampling pump for coal mine underground beam pipe monitoring.
Further preferably, the mining distributed temperature measuring device and the optical fiber sensor are arranged on the distributed temperature measuring optical cable, and the distributed temperature measuring optical cable is an armored 2-core temperature measuring optical cable.
Preferably, the industrial ring network comprises two ring network switches connected with each other, and the display terminals of the ground data workstations are respectively arranged in a data display scheduling room and a data display general protection department.
Preferably, the monitoring substation is disposed in the vicinity of the goaf.
The utility model discloses a method for monitoring spontaneous combustion risk by utilizing a spontaneous combustion risk measuring device of a goaf of a coal face,
including gas monitoring, temperature monitoring and data processing,
wherein in the step of monitoring the gas,
1) Starting a gas monitoring device for monitoring, and extracting gas in the underground environment through distributed laser beam pipes;
2) The extracted gas enters a beam pipe system host for analysis;
3) The analysis result is uploaded to a ground data workbench through a mining intrinsic safety Ethernet switch and an industrial ring network;
4) The ground data workbench gathers and counts the environmental gases at all positions in the well;
a step of monitoring the temperature of the molten steel,
1) The mining distributed temperature measuring device and the optical fiber sensor on the distributed temperature measuring optical cable detect the ambient temperature;
2) The distributed temperature measuring optical cable uploads the detected temperature data to the optical fiber distributed regulator;
3) The optical fiber distributed regulator transmits the gas data to a ground data workbench through an industrial ring network;
4) The ground data workbench gathers and counts the temperatures of all positions in the well;
the data is processed in such a way that,
1) The ground data workbench gathers and compares the temperature parameter and the gas parameter number of the underground environment,
2) Determining natural risk levels of underground environment at various positions according to the temperature and gas numerical table;
3) Natural risk levels for various locations of the downhole environment are entered and a warning is raised.
The utility model has the advantages that:
1. the utility model can realize real-time online monitoring. The goaf temperature monitoring is combined with the marking gas, the ignition symptom is determined through the marking gas, and the ignition position is determined through the goaf temperature and the hot spot distribution, so that the problem that the goaf temperature monitoring can only be sampled and cannot be positioned in the past is solved.
2. The method is suitable for disaster monitoring in the goaf of the coal mine, eliminates faults and accidents at the bud through analysis and prediction of data, and therefore has wide application range and market popularization prospect.
3. Compared with the traditional electronic temperature sensor, the optical fiber sensor has the advantages of being intrinsically safe, corrosion-resistant, free of electromagnetic interference and the like, and the optical cable is laid on the underground working surface gateway along the trend, so that the long-distance and large-range environmental temperature information is continuously monitored.
4. Compared with the traditional coal mine safety monitoring system, the monitored environmental parameters, equipment range and space area are greatly improved, the problem of direct on-line monitoring of the coal mine blind area is solved, the system is rich and improves the disaster monitoring level, the guarantee capability of safe and efficient production is improved, and decision basis is provided for efficient scientific and safe production.
Drawings
FIG. 1 is a schematic diagram of the present utility model after modification;
fig. 2 is a schematic diagram of the present utility model prior to retrofitting.
Reference numerals: 1. the system comprises a ground data workbench, a data display scheduling terminal, a data display general-prevention terminal, 2, the ground, 3, a ring network exchanger, 4, a mining optical fiber distributed regulator, 5, a distributed temperature measuring optical cable, 6, a coal face, 7, a roadway air pumping station, 8, a monitoring substation, 9 goafs, 10 and a roadway.
Detailed Description
The following description of preferred embodiments of the present utility model is given in conjunction with the accompanying drawings, it being understood that the preferred embodiments described herein are merely for the purpose of illustration and explanation of the present utility model, and not for the purpose of limiting the same.
It should be noted that, the directions or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are directions or positional relationships based on the drawings, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the indicated shape or elements must have a specific direction, be constructed and operated in a specific direction, and thus are not to be construed as limiting the present utility model.
Fig. 1 to 2 show an embodiment of the present utility model.
The spontaneous combustion risk measuring device for the goaf of the coal face comprises a temperature monitoring device, a gas monitoring device, an industrial ring network and a ground data workbench; the coal face comprises a conveying roadway arranged above the coal face and a track roadway arranged below the coal face; the gas monitoring device comprises a laser beam pipe system laid on a transportation roadway of the coal face, an air pumping pump station is arranged at the right end of the laser beam pipe system, a monitoring substation is arranged at one end of the air pumping pump station, one end of the monitoring substation is coupled with an industrial looped network, and one end of the industrial looped network is connected with a ground data workstation; the temperature monitoring device comprises distributed temperature measuring optical cables arranged on the top, the bottom, a transportation lane and four paths of a track lane of a coal face, a mining optical fiber distributed regulator is arranged on a substation near the coal face, the temperature of a goaf of the coal face is monitored, the temperature is abnormal in time, and the natural ignition risk point of the goaf is determined through temperature change; one end of the mining optical fiber distributed regulator is coupled with the industrial ring network; the gas monitoring device and the temperature monitoring device are coupled at the industrial ring network access, the abnormal ignition condition of the goaf is analyzed and early-warned, the potential safety hazard position is determined, the gas and the temperature can be measured, and the gas monitoring device and the temperature monitoring device are mutually matched and mutually coupled.
The monitoring substation comprises a beam pipe system host, a mining flameproof and intrinsically safe direct current stabilized power supply, a mining intrinsically safe beam pipe monitoring gas pretreatment control box, a mining intrinsically safe Ethernet switch and a gas sampling pump for monitoring the underground beam pipe of the coal mine, shortens the length of the beam pipe line compared with the traditional ground analysis mode, and has the characteristics of high gas transmission speed, simplicity in maintenance and the like; the industrial ring network comprises two ring network switches connected, a ground data workstation passes through a data display dispatching room to reach a data display general defense department, a monitoring substation is arranged near a goaf, a temperature monitoring device comprises a plurality of detection means such as laser detection, infrared detection, spectrum detection and the like, full-range and high-precision analysis is carried out on the marked gas, the industrial ring network has the characteristics of strong anti-interference performance, convenient maintenance, automatic correction, high analysis speed and the like, a distributed temperature measuring device and an optical fiber sensor for a substation are respectively arranged on a distributed temperature measuring optical cable, the optical fiber sensor takes light waves as carriers, the optical fiber is a novel sensor for sensing and transmitting external measured signals, and the optical fiber is uncharged, small in volume, light in weight, easy to bend, good in electromagnetic interference resistance and radiation resistance, and particularly suitable for being used in severe environments such as inflammable, explosive, severely limited space, strong electromagnetic interference and the like, and the existing safety monitoring and production automation level are greatly improved; the aspiration pump station comprises an air delivery pump, the laser beam pipe system comprises a beam pipeline, and the distributed temperature measuring optical cable is an armored temperature measuring optical cable: 2 cores.
The laser beam pipe system is arranged on the coal face to replace the traditional negative pressure on the beam pipe system for ground analysis, when the system works, the pumping pump station is started firstly, negative pressure is formed in the beam pipe, namely the pressure outside the well is larger than the pressure in the beam pipe, underground gas is sucked into the beam pipe and then is input into the monitoring substation, the monitoring substation is arranged near a goaf, the underground gas transmission pump pumps gas from multiple monitoring points through the beam pipe, the monitoring point gas is continuously analyzed through the monitoring substation by utilizing various detection means such as laser, infrared, spectrum and the like, the monitoring data is transmitted to the ground data workstation through the industrial ring network, and the ground data workstation further analyzes and processes the collected data to realize prediction and forecast of natural fire of the coal mine.
The utility model relates to a spontaneous combustion risk monitoring method for a spontaneous combustion risk measuring device of a goaf of a coal face.
Wherein the gas monitoring step is that,
1) And starting a gas monitoring device for monitoring, specifically extracting gas in the underground environment through the distributed laser beam pipes. The laser beam tubes are distributed in the underground environment, so that the number of the laser beam tubes is large, and synchronous detection of each position is realized;
2) The pumping gas enters a beam pipe system host through a pumping pump, the beam pipe system host analyzes the gas at each position respectively, and sampling and analysis are carried out synchronously, so that the purpose of real-time detection is achieved;
3) The analyzed data result is uploaded to a ground data workbench through a mining intrinsic safety Ethernet switch and an industrial ring network;
4) The data display dispatching room and the data display general protection department of the ground data workbench can see the gas data of each position in real time and collect and count the environmental gas of each position.
The process realizes real-time analysis of gas types, and if flammable gas is accumulated, the process gives an alarm in time to start the ventilation system.
Wherein in the step of monitoring the temperature, the temperature is monitored,
1) The mining distributed temperature measuring device and the optical fiber sensor on the distributed temperature measuring optical cable detect the ambient temperature;
2) The distributed temperature measuring optical cable uploads the detected temperature data to the optical fiber distributed regulator;
3) The optical fiber distributed regulator transmits the gas data to a ground data workbench through an industrial ring network;
4) The ground data workbench gathers and counts the temperatures of all positions in the well;
finally, data processing, in particular
1) The ground data workbench gathers and compares the temperature parameter and the gas parameter number of the underground environment,
2) Determining natural risk levels of underground environment at various positions according to the temperature and gas numerical table;
3) Natural risk levels for various locations of the downhole environment are entered and a warning is raised.
The foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but may be modified or substituted for part of the technical features described in the foregoing embodiments by those skilled in the art, even though the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (5)
1. The spontaneous combustion risk measuring device for the goaf of the coal face is characterized by comprising a temperature monitoring device, a gas monitoring device, an industrial ring network and a ground data workbench;
the gas monitoring device comprises a laser beam pipe laid on a transportation roadway of a coal face, an air pumping station is arranged at the right end of the laser beam pipe system, the laser beam pipe is used for pumping ambient air at the position, a monitoring substation is arranged at one end of the air pumping station, one end of the monitoring substation is coupled with an industrial looped network, and one end of the industrial looped network is connected with a ground data workstation;
the temperature monitoring device comprises distributed temperature measuring optical cables arranged on the top, the bottom, a transportation lane and four paths of a track lane of the coal face, the distributed temperature measuring optical cables are connected to optical fiber distributed regulators, mining optical fiber distributed regulators are arranged on a substation near the coal face, and one end of each mining optical fiber distributed regulator is coupled with an industrial ring network;
the gas monitoring device and the temperature monitoring device are coupled at an industrial ring network access part, and the industrial ring network is connected to a ground data workbench.
2. The coal face goaf spontaneous combustion risk measurement device according to claim 1, wherein the device is characterized by
The monitoring substation is internally provided with a beam pipe system host, a mining flameproof and intrinsically safe type direct current stabilized power supply, a mining intrinsically safe type beam pipe monitoring gas pretreatment control box, a mining intrinsically safe type Ethernet switch and a gas sampling pump for monitoring the coal mine underground beam pipe, wherein the coal mine underground laser beam pipe is connected with the gas sampling pump, the gas sampling pump is connected with the beam pipe system host, the mining intrinsically safe type beam pipe monitoring gas pretreatment control box controls the beam pipe system host to analyze collected gas, the data input of the mining intrinsically safe type beam pipe monitoring gas pretreatment control box is connected with the mining intrinsically safe type Ethernet switch, the mining intrinsically safe type Ethernet switch is coupled with an industrial ring network,
the mining flameproof and intrinsically safe direct current stabilized power supply provides power for a beam pipe system host, a mining intrinsically safe beam pipe monitoring gas pretreatment control box, a mining intrinsically safe Ethernet switch and a gas sampling pump for coal mine underground beam pipe monitoring.
3. The spontaneous combustion risk measuring device for the goaf of the coal face according to claim 2, wherein the distributed temperature measuring optical cable is provided with a mining distributed temperature measuring device and an optical fiber sensor, and is an armored 2-core temperature measuring optical cable.
4. The spontaneous combustion risk measuring device for the goaf of the coal face according to claim 1, wherein the industrial looped network comprises two looped network switches connected with each other, and display terminals of ground data workstations are respectively arranged in a data display scheduling room and a data display general defense department.
5. A coal face goaf spontaneous combustion risk measurement device as claimed in claim 1 wherein the monitoring substation is located in the vicinity of the goaf.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321100518.3U CN220251867U (en) | 2023-05-09 | 2023-05-09 | Spontaneous combustion risk measuring device for goaf of coal face |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202321100518.3U CN220251867U (en) | 2023-05-09 | 2023-05-09 | Spontaneous combustion risk measuring device for goaf of coal face |
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| CN220251867U true CN220251867U (en) | 2023-12-26 |
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| CN202321100518.3U Active CN220251867U (en) | 2023-05-09 | 2023-05-09 | Spontaneous combustion risk measuring device for goaf of coal face |
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- 2023-05-09 CN CN202321100518.3U patent/CN220251867U/en active Active
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