CN113217108A - Early warning system for coal and gas outburst monitoring - Google Patents
Early warning system for coal and gas outburst monitoring Download PDFInfo
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- CN113217108A CN113217108A CN202110620518.5A CN202110620518A CN113217108A CN 113217108 A CN113217108 A CN 113217108A CN 202110620518 A CN202110620518 A CN 202110620518A CN 113217108 A CN113217108 A CN 113217108A
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- monitoring
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- coal seam
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
Abstract
The invention discloses an early warning system for monitoring coal and gas outburst, which relates to the technical field of coal and gas outburst monitoring and comprises the following components: the coal seam monitoring assembly is preset in a coal seam and used for monitoring the stress of the coal seam near a mining face and the gas concentration; the mining surface monitoring component can synchronously move in the same direction along with the progress of tunneling so as to keep a fixed range distance for remote compensation monitoring, and a monitoring sensor is arranged at the bottom of the mining surface monitoring component; and the control monitoring center is respectively in data transmission with the coal bed monitoring assembly and the mining surface monitoring assembly through the wireless communication module.
Description
Technical Field
The invention relates to the technical field of coal and gas outburst monitoring, in particular to an early warning system for coal and gas outburst monitoring.
Background
Coal and gas outburst are one of the comparatively serious natural disasters in the pit of colliery, an extremely complicated power phenomenon, when taking place, broken coal and gas are spout in a large number to the mining space by the internal quick of coal, harm is very big, if can not make the early warning in advance, then cause casualties easily, consequently, need establish effectual early warning system and carry out the real-time supervision early warning, and current coal and gas outburst monitoring system utilizes stress monitoring mechanism to monitor coal seam stress mostly, when the rupture strength of coal seam between high stress region and the mining face is close to the outstanding stress, then send the early warning, consequently this type of monitoring system only can monitor coal seam stress, when because of the coal body, when the rock mass changes and leads to the monitor to become invalid, then unable normal work, the reliability is general.
Therefore, there is a need for a pre-warning system for coal and gas outburst monitoring to solve the above-mentioned problems in the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a warning system for coal and gas outburst monitoring, comprising:
the coal seam monitoring assembly is preset in a coal seam and used for monitoring the stress of the coal seam near a mining face and the gas concentration;
the mining surface monitoring component can synchronously move in the same direction along with the progress of tunneling so as to keep a fixed range distance for remote compensation monitoring, and a monitoring sensor is arranged at the bottom of the mining surface monitoring component; and
and the control monitoring center is used for carrying out data transmission with the coal bed monitoring assembly and the mining surface monitoring assembly through the wireless communication module respectively.
Further, preferably, the coal seam monitoring assembly comprises:
a monitoring cylinder;
the anchoring rods are distributed along the axial direction of the monitoring cylinder and fixed at one end of the monitoring cylinder;
at least three groups of protection lugs, wherein each group of protection lugs is three blocks which are circumferentially distributed on the outer surface of the monitoring cylinder; and
and the stress sheet is fixedly embedded on one side of the protection lug and is connected with the control monitoring center through the wireless communication module.
Further, preferably, the monitoring device also comprises at least three groups of suction holes, wherein each group of suction holes are three hole bodies circumferentially arranged on the outer circumference of the monitoring cylinder;
the one end that anchor pole was kept away from to the monitoring section of thick bamboo is fixed with the suction pump for through the gas in the suction hole suction coal seam, just the one end that is close to the suction pump in the monitoring section of thick bamboo is provided with gas monitoring sensor one, gas monitoring sensor one links to each other with control monitoring center through wireless communication module.
Preferably, an electromagnetic valve is disposed inside each of the suction holes, and the electromagnetic valves corresponding to the same group of suction holes are in one group.
Further, preferably, an air-permeable net pad is disposed inside each of the suction holes.
Further, preferably, in the initial monitoring stage, each electromagnetic valve is opened, and when the gas concentration is monitored to exceed a threshold value, only one group is sequentially opened to screen the gas section; and then further screening the gas direction through the three electromagnetic valves in the same group.
Further, preferably, the mining face monitoring assembly comprises: two sets of components of crawling, and two sets of be provided with screw-nut pair structure between the component of crawling.
Further, as preferred, the telescopic link is installed to the output below of screw-nut pair structure adoption mount pad, the output of telescopic link adopts the damping plate to link to each other with the horizontal regulator, the output of horizontal regulator is provided with the rotating ware, the output of rotating ware links to each other with monitoring sensor.
Further, preferably, the creeper assembly includes:
a first crawling claw;
the crawling controllers are two groups and are symmetrically embedded at two sides of the first crawling claw;
the second crawling claw is fixed at the output end of one crawling controller; and
the third crawling claw is fixed at the output end of the other crawling controller;
the first crawling claw, the second crawling claw and the third crawling claw are provided with at least one fastening assembly;
and when crawling, two fastening components in the first crawling claw, the second crawling claw and the third crawling claw keep a fastening shape.
Further, preferably, the fastening component is an electromagnetic adsorption mechanism or a drilling anchoring mechanism.
Compared with the prior art, the invention provides an early warning system for monitoring coal and gas outburst, which has the following beneficial effects:
in the embodiment of the invention, a coal seam monitoring assembly is preset in a coal seam, so that the stress and the gas concentration of the coal seam near a mining surface can be monitored, wherein the pressure of the coal seam in the area can be continuously monitored by using a strain gauge, the change of the gas concentration in the coal seam in the area can be monitored in an auxiliary manner by using a gas monitoring sensor I, in the initial monitoring stage, each electromagnetic valve is opened, and when the gas concentration is monitored to exceed a threshold value, only one group of the electromagnetic valves is sequentially opened to screen a gas section; and then, the gas position is further screened through the three electromagnetic valves in the same group, so that data guidance can be effectively provided for subsequent actions, and in addition, the mining surface monitoring component can synchronously move in the same direction along with the advancing, so that the distance in a fixed range is kept for remote compensation monitoring, and the defect that the coal seam monitoring component cannot comprehensively monitor is overcome.
Drawings
FIG. 1 is a schematic diagram of an overall structure of an early warning system for monitoring coal and gas outburst;
FIG. 2 is a schematic diagram of a face monitoring assembly in an early warning system for coal and gas outburst monitoring;
FIG. 3 is a first schematic diagram of a coal seam monitoring assembly of an early warning system for coal and gas outburst monitoring;
FIG. 4 is a schematic structural diagram of a coal seam monitoring module in an early warning system for monitoring coal and gas outburst;
FIG. 5 is a schematic diagram of a drilling anchoring mechanism in an early warning system for coal and gas outburst monitoring;
in the figure: 1. a coal seam monitoring assembly; 2. a mining face monitoring assembly; 3. monitoring a sensor; 4. controlling a monitoring center; 11. a monitoring cylinder; 12. an anchoring rod; 13. a protection bump; 14. stress sheets; 15. a suction hole; 16. an electromagnetic valve; 17. a first gas monitoring sensor; 18. a suction pump; 19. a breathable net pad; 21. a first crawling claw; 22. a crawling controller; 23. a second crawling claw; 24. a third crawling claw; 25. a guide carrier bar; 26. a fastening assembly; 27. a T-shaped slider; 28. a nut seat; 29. a lead screw; 210. a telescopic rod; 211. a vibration damping plate; 212. a lateral adjuster; 213. a rotator; 31. a second gas monitoring sensor; 261. a chute; 262. a drilling machine; 263. a drill stem; 264. and feeding into the column.
Detailed Description
Referring to fig. 1 to 5, in an embodiment of the present invention, an early warning system for monitoring coal and gas outburst includes:
the coal seam monitoring system comprises at least one coal seam monitoring assembly 1, wherein the coal seam monitoring assemblies 1 are preset in a coal seam and used for monitoring the stress and the gas concentration of the coal seam near a mining surface, when one coal seam monitoring assembly 1 is used, the coal seam monitoring assembly can be placed in a key monitoring area, and when a plurality of coal seam monitoring assemblies 1 are used, the coal seam monitoring assemblies can be placed at intervals as required, so that the monitoring effect is improved;
the mining surface monitoring components 2 can synchronously move in the same direction along with the progress of excavation, so that the distance is kept in a fixed range for remote compensation monitoring, the defect that the coal seam monitoring components 1 cannot be comprehensively monitored is overcome, in addition, when one mining surface monitoring component 2 is adopted, the mining surface monitoring component can be placed in a key monitoring area, when a plurality of mining surface monitoring components 2 are adopted, the mining surface monitoring components can be placed at intervals as required, each mining surface monitoring component 2 is responsible for the respective monitoring area, the bottom of each mining surface monitoring component is provided with a monitoring sensor 3, and the monitoring sensor 3 can comprise a second gas monitoring sensor 31; and
and the control monitoring center 4 is used for respectively carrying out data transmission with the coal seam monitoring component 1 and the mining face monitoring component 2 through a wireless communication module.
In this embodiment, as shown in fig. 3, the coal seam monitoring assembly 1 includes:
a monitoring cylinder 11;
the anchoring rods 12 are distributed along the axial direction of the monitoring cylinder 11 and are fixed at one end of the monitoring cylinder 11;
at least three groups of protection lugs 13, wherein each group of protection lugs 13 is three blocks circumferentially distributed on the outer surface of the monitoring cylinder 11; and
As a preferred embodiment, the monitoring device further comprises at least three groups of suction holes 15, wherein each group of suction holes 15 is three hole bodies circumferentially arranged on the outer circumference of the monitoring cylinder 11;
one end that anchor pole 12 was kept away from to monitoring section of thick bamboo 11 is fixed with suction pump 18 for through the gas in the suction hole 15 suction coal seam, just the one end that is close to suction pump 18 in the monitoring section of thick bamboo 11 is provided with gas monitoring sensor 17, gas monitoring sensor 17 links to each other with control monitoring center 4 through wireless communication module, consequently can also assist the gas concentration change in this regional coal seam of monitoring through gas monitoring sensor 17, and can feed back gas concentration data to control monitoring center in real time, judge and make the early warning by control monitoring center.
In a preferred embodiment, a solenoid valve 16 is disposed inside each of the suction holes 15, and the solenoid valves 16 corresponding to the same group of suction holes 15 are in one group.
In a preferred embodiment, as shown in fig. 4, an air-permeable net pad 19 is disposed inside each of the suction holes 15, and the air-permeable net pad can effectively prevent the suction holes from being blocked.
In a preferred embodiment, in an initial stage of monitoring, each electromagnetic valve 16 is opened, and when the monitored gas concentration exceeds a threshold value, only one group is sequentially opened to screen the gas section; and then, carrying out further gas position screening through the three electromagnetic valves in the same group, specifically, if the monitored gas concentration exceeds a threshold value, only sequentially starting one group of the electromagnetic valves 16 to screen a gas section, and further carrying out position screening on the section when the gas concentration exceeds the threshold value, so as to provide a basis for the subsequent next action.
In this embodiment, as shown in fig. 2, the mining face monitoring assembly 2 includes: two sets of subassemblies of crawling, and two sets of be provided with screw nut substructure between the subassembly of crawling, screw nut substructure in this embodiment includes:
the connecting arm is connected between the two groups of crawling assemblies;
the T-shaped sliding block 27 is arranged in the connecting arm in a limiting sliding mode; and
and the screw seat 28 is fixed below the T-shaped sliding block 27 and is in transmission connection with the screw 29, the screw 29 is rotatably arranged between two bearing seats (not shown in the figure), the bearing seats are fixed below the connecting arm, and the rotation of the screw is driven by an external motor.
In addition, the telescopic link 210 is installed to the output below of screw-nut pair structure adoption mount pad, the output of telescopic link 210 adopts damping plate 211 to link to each other with horizontal regulator 212, the output of horizontal regulator 212 is provided with rotating ware 213, the output of rotating ware 213 links to each other with monitoring sensor 3.
In this embodiment, the crawling assembly includes:
a first crawling claw 21;
the crawling controllers 22 are two groups and are symmetrically embedded at two sides of the first crawling claw 21;
a second crawling claw 23 fixed to an output end of one of the crawling controllers 22; and
the third crawling claw 24 is fixed at the output end of the other crawling controller 22, and guide bearing rods 25 capable of extending into the second crawling claw or the third crawling claw are further fixed on two sides of the first crawling claw 21;
moreover, at least one fastening component 26 is arranged on each of the first crawling claw 21, the second crawling claw 22 and the third crawling claw 24;
and, during crawling, two fastening components 26 in the first crawling claw 21, the second crawling claw 22 and the third crawling claw 24 keep a fastening state, specifically, when crawling to being close to the tunneling surface, the fastening components on the third crawling claw 24 keep a releasing state, the fastening components 26 on the first crawling claw 21 and the second crawling claw 22 keep a fastening state, after the crawling controller 22 in contact with the third crawling claw 24 extends to a specified length, the fastening components on the third crawling claw and the second crawling claw keep a fastening state, the fastening components on the first crawling claw keep a releasing state, and the crawling controller 22 controls the first crawling claw to move to the position of the third crawling claw 24, so on, and finally the second crawling claw moves.
In this embodiment, as shown in fig. 1 and 5, the fastening component 26 is an electromagnetic adsorption mechanism or a drilling anchoring mechanism, specifically, when the fastening component 26 is an electromagnetic adsorption mechanism, it at least includes an electromagnet, and when the electromagnet is powered on and powered off, it can realize adsorption for roof support, and when the fastening component 26 is a drilling anchoring mechanism, as shown in fig. 5, it includes a sliding slot 261, a drilling machine 262, a drilling rod 263 and a feeding column 264, where the drilling machine is fixed inside the sliding slot, an output end of the drilling machine is connected to the drilling rod, and the sliding slot slides through the first crawling claw 21, the second crawling claw 22 and the third crawling claw 24 and is controlled by the feeding column 264 to perform sliding motion.
When the method is specifically implemented, the coal seam monitoring component 1 is firstly buried in a key monitoring area placed in a coal seam and used for monitoring the stress and the gas concentration of the coal seam near a mining surface, then the mining surface monitoring component 2 is arranged on a top plate near the mining surface and synchronously moves in the same direction along with the progress of tunneling, so that the distance is kept in a fixed range for remote compensation monitoring, and the defect that the coal seam monitoring component 1 cannot monitor comprehensively is overcome.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (10)
1. The utility model provides a warning system for coal and gas outburst monitoring which characterized in that: the method comprises the following steps:
the coal seam monitoring system comprises at least one coal seam monitoring assembly (1), wherein the coal seam monitoring assembly (1) is preset in a coal seam and is used for monitoring the stress of the coal seam near a mining face and the concentration of gas;
the monitoring device comprises at least one mining surface monitoring component (2), wherein the mining surface monitoring component (2) can synchronously move in the same direction along with the advancing process so as to keep a fixed range distance for remote compensation monitoring, and a monitoring sensor (3) is arranged at the bottom of the monitoring component; and
the coal seam monitoring system comprises a control monitoring center (4), wherein the control monitoring center (4) is respectively in data transmission with a coal seam monitoring assembly (1) and a mining surface monitoring assembly (2) through a wireless communication module.
2. The early warning system for coal and gas outburst monitoring of claim 1, wherein: the coal seam monitoring assembly (1) comprises:
a monitoring cylinder (11);
the anchoring rods (12) are distributed along the axial direction of the monitoring cylinder (11) and are fixed at one end of the monitoring cylinder (11);
at least three groups of protection lugs (13), wherein each group of protection lugs (13) are three blocks which are circumferentially distributed on the outer surface of the monitoring cylinder (11); and
and the stress sheet (14) is fixedly embedded on one side of the protection bump (13) and is connected with the control monitoring center (4) through a wireless communication module.
3. The early warning system for coal and gas outburst monitoring of claim 2, wherein: the device also comprises at least three groups of suction holes (15), wherein each group of suction holes (15) are three hole bodies which are circumferentially arranged on the outer circumference of the monitoring cylinder (11);
one end that anchor pole (12) were kept away from in monitoring section of thick bamboo (11) is fixed with suction pump (18) for through the gas in suction hole (15) suction coal seam, just the one end that is close to suction pump (18) in monitoring section of thick bamboo (11) is provided with gas monitoring sensor (17), gas monitoring sensor (17) link to each other with control monitoring center (4) through wireless communication module.
4. A warning system for coal and gas outburst monitoring according to claim 3, wherein: the inner side of each suction hole (15) is provided with an electromagnetic valve (16), and the electromagnetic valves (16) corresponding to the suction holes (15) in the same group form a group.
5. A warning system for coal and gas outburst monitoring according to claim 3, wherein: an air-permeable net pad (19) is arranged on the inner side of each suction hole (15).
6. An early warning system for coal and gas outburst monitoring according to claim 4 or 5, wherein: in the initial monitoring stage, all the electromagnetic valves (16) are opened, and when the gas concentration is monitored to exceed a threshold value, only one group is opened in sequence to screen the gas section; and then further screening the gas direction through the three electromagnetic valves in the same group.
7. The early warning system for coal and gas outburst monitoring of claim 1, wherein: the mining face monitoring assembly (2) comprises:
two sets of components of crawling, and two sets of be provided with screw-nut pair structure between the component of crawling.
8. The early warning system for coal and gas outburst monitoring of claim 7, wherein: the utility model discloses a lead screw nut auxiliary structure's output, including lead screw nut auxiliary structure, the output below adopts the mount pad to install telescopic link (210), the output of telescopic link (210) adopts damping plate (211) to link to each other with horizontal regulator (212), the output of horizontal regulator (212) is provided with rotates ware (213), the output that rotates ware (213) links to each other with monitoring sensor (3).
9. The early warning system for coal and gas outburst monitoring of claim 7, wherein: the creeper assembly includes:
a first crawling claw (21);
the crawling controllers (22) are divided into two groups and symmetrically embedded into two sides of the first crawling claw (21);
the second crawling claw (23) is fixed at the output end of one crawling controller (22); and
a third crawling claw (24) fixed at the output end of the other crawling controller (22);
moreover, the first crawling claw (21), the second crawling claw (22) and the third crawling claw (24) are respectively provided with at least one fastening assembly (26);
and, when crawling, two fastening components (26) in the first crawling claw (21), the second crawling claw (22) and the third crawling claw (24) keep a fastening state.
10. A warning system for coal and gas outburst monitoring according to claim (1), characterized in that: the fastening component (26) is an electromagnetic adsorption mechanism or a drilling anchoring mechanism.
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| CN202110620518.5A CN113217108B (en) | 2021-06-03 | 2021-06-03 | Early warning system for monitoring coal and gas outburst |
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| CN202110620518.5A CN113217108B (en) | 2021-06-03 | 2021-06-03 | Early warning system for monitoring coal and gas outburst |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241330A (en) * | 2023-03-28 | 2023-06-09 | 黑龙江泰平隆矿业科技有限公司 | Early warning method and device for gas danger in coal mine and electronic equipment |
| CN117027953A (en) * | 2023-09-18 | 2023-11-10 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718212A (en) * | 2009-10-09 | 2010-06-02 | 西安西科测控设备有限责任公司 | Device for tracking and early warning outburst danger of mine coal and gas in real time |
| CN102426073A (en) * | 2011-09-05 | 2012-04-25 | 重庆派腾机械设备有限责任公司 | Coal and gas outburst stress collector and manufacturing method thereof |
| CN102434208A (en) * | 2011-10-14 | 2012-05-02 | 陈洪凯 | Method and system for forecasting coal and gas bursting |
| CN106355295A (en) * | 2016-10-02 | 2017-01-25 | 山东科技大学 | Method for predicting gas emission quantity of single coal seam mining area |
| US20170122822A1 (en) * | 2014-08-04 | 2017-05-04 | China University Of Mining And Technology | Multipoint Coal and Rock Mass Stress Real-Time Monitoring Device and Method |
| CN107939449A (en) * | 2018-01-12 | 2018-04-20 | 河南理工大学 | A kind of old sky of short range seam mining lets out intelligent early-warning system and method for early warning under water |
| WO2019071756A1 (en) * | 2017-10-12 | 2019-04-18 | 中国矿业大学 | Measurement-while-drilling method and device for obtaining coal seam gas parameter |
| CN209510394U (en) * | 2018-12-29 | 2019-10-18 | 煤炭科学技术研究院有限公司 | A kind of getting working face coal and gas prominent real-time system for monitoring and pre-warning |
| CN212428947U (en) * | 2020-05-15 | 2021-01-29 | 兖矿集团有限公司 | High-efficient monitoring devices of high-gas outburst coal seam working face front stress |
| CN112302722A (en) * | 2020-11-17 | 2021-02-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Coal mine roadway multi-azimuth stress and deformation wireless monitoring and early warning method and system |
-
2021
- 2021-06-03 CN CN202110620518.5A patent/CN113217108B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101718212A (en) * | 2009-10-09 | 2010-06-02 | 西安西科测控设备有限责任公司 | Device for tracking and early warning outburst danger of mine coal and gas in real time |
| CN102426073A (en) * | 2011-09-05 | 2012-04-25 | 重庆派腾机械设备有限责任公司 | Coal and gas outburst stress collector and manufacturing method thereof |
| CN102434208A (en) * | 2011-10-14 | 2012-05-02 | 陈洪凯 | Method and system for forecasting coal and gas bursting |
| US20170122822A1 (en) * | 2014-08-04 | 2017-05-04 | China University Of Mining And Technology | Multipoint Coal and Rock Mass Stress Real-Time Monitoring Device and Method |
| CN106355295A (en) * | 2016-10-02 | 2017-01-25 | 山东科技大学 | Method for predicting gas emission quantity of single coal seam mining area |
| WO2019071756A1 (en) * | 2017-10-12 | 2019-04-18 | 中国矿业大学 | Measurement-while-drilling method and device for obtaining coal seam gas parameter |
| CN107939449A (en) * | 2018-01-12 | 2018-04-20 | 河南理工大学 | A kind of old sky of short range seam mining lets out intelligent early-warning system and method for early warning under water |
| CN209510394U (en) * | 2018-12-29 | 2019-10-18 | 煤炭科学技术研究院有限公司 | A kind of getting working face coal and gas prominent real-time system for monitoring and pre-warning |
| CN212428947U (en) * | 2020-05-15 | 2021-01-29 | 兖矿集团有限公司 | High-efficient monitoring devices of high-gas outburst coal seam working face front stress |
| CN112302722A (en) * | 2020-11-17 | 2021-02-02 | 山西潞安环保能源开发股份有限公司常村煤矿 | Coal mine roadway multi-azimuth stress and deformation wireless monitoring and early warning method and system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241330A (en) * | 2023-03-28 | 2023-06-09 | 黑龙江泰平隆矿业科技有限公司 | Early warning method and device for gas danger in coal mine and electronic equipment |
| CN116241330B (en) * | 2023-03-28 | 2024-02-23 | 黑龙江泰平隆矿业科技有限公司 | Early warning method and device for gas danger in coal mine and electronic equipment |
| CN117027953A (en) * | 2023-09-18 | 2023-11-10 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
| CN117027953B (en) * | 2023-09-18 | 2024-03-12 | 四川蜀能矿山开发技术咨询有限公司 | Colliery gas concentration detects and safety precaution device |
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| CN113217108B (en) | 2022-08-16 |
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