CN111894657A - Gas treatment method - Google Patents
Gas treatment method Download PDFInfo
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- CN111894657A CN111894657A CN202010685138.5A CN202010685138A CN111894657A CN 111894657 A CN111894657 A CN 111894657A CN 202010685138 A CN202010685138 A CN 202010685138A CN 111894657 A CN111894657 A CN 111894657A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000009423 ventilation Methods 0.000 claims abstract description 87
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000007921 spray Substances 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000003245 coal Substances 0.000 claims description 12
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000007774 longterm Effects 0.000 claims description 4
- 238000009825 accumulation Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000011900 installation process Methods 0.000 claims description 3
- 238000005065 mining Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 238000005422 blasting Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims description 2
- 239000002023 wood Substances 0.000 claims description 2
- 241000883990 Flabellum Species 0.000 claims 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 66
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 206010003497 Asphyxia Diseases 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005067 remediation Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F7/00—Methods or devices for drawing- off gases with or without subsequent use of the gas for any purpose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention belongs to the field of gas treatment methods, and particularly relates to a gas treatment method, which comprises the following treatment equipment and structures: the device comprises ventilation equipment, a ventilation pipeline, branch pipelines, air quantity detection equipment, a dispersing sprayer, a bearing seat, fan blades and an exhaust hole, wherein the equipment for gas control and the structure installation method comprise the following steps: s1, firstly, fixedly installing ventilation pipelines at a certain height in a roadway in advance, and during installation, selecting and arranging the ventilation pipelines at positions where the pipelines are not easy to damage. The method for controlling the gas is reasonable in design, particularly the installed dispersion spray heads and the branch pipelines installed at all points can disperse the gas in a large range, the gas concentration is reduced, and when one ventilation device cannot work, the standby ventilation device can be started in time, so that fresh air can be continuously sent into a roadway, the possibility of gas accidents is better prevented, the two ventilation devices are used alternately, the device can be prevented from heating for a long time, and the service life of the device is shortened.
Description
Technical Field
The invention belongs to the field of gas treatment methods, and particularly relates to a gas treatment method.
Background
Mine gas is harmful gas which is inevitably encountered in coal mine production, and during the coal mine production process, along with the production, the gas is gushed out to a production space, so that the underground production is threatened, and no matter how much the gas is gushed out, the gas is always the most main hazard source of the mine production and is positioned at the head of five natural disasters of the coal mine.
The gas is a general name of harmful and toxic gas mainly comprising methane in a roadway underground and is a mixed gas, the methane accounts for more than 90%, the methane usually refers to the methane alone, the property of the methane is 'three-free' gas, namely colorless, tasteless and odorless, the relative density of the methane and air is 0.554, the methane is slightly soluble in water and is not toxic, but the concentration of the gas is very high, so that the concentration of oxygen in the air can be reduced, the gas has suffocation property, combustion and explosiveness, under the condition that the pressure is not changed, CH4 is increased to 43%, and the oxygen is reduced to 12%, so that people are difficult to breathe; when CH4 is increased to 57%, oxygen is reduced to 9%, suffocation is performed for a short time, and death occurs, when gas and air are mixed to reach a certain concentration, the gas is combusted and exploded, the gas concentration is 5% -16% exploded according to regulation, and the gas is combusted when the gas concentration exceeds 15% -16%.
However, in the existing gas control method, the control effect is poor, the gas in each upper corner and each goaf cannot be better dispersed and discharged in an all-around manner, the air volume of each point cannot be monitored in real time to ensure that the air volume circulates in real time to blow away the gas, in addition, a ventilation device is often installed in the work, so that the device works for a long time and is easy to damage, the device cannot be maintained in time after being damaged, and the roadway gas accumulation is easy to cause potential safety hazards.
Disclosure of Invention
The invention provides a gas treatment method aiming at the problems.
In order to achieve the purpose, the invention adopts the technical scheme that the invention provides a gas treatment method, which is characterized by comprising the following steps: the gas treatment comprises the following treatment equipment and structures: the device comprises ventilation equipment, a ventilation pipeline, branch pipelines, air quantity detection equipment, a dispersing sprayer, a bearing seat, fan blades and an exhaust hole, wherein the equipment for gas control and the structure installation method comprise the following steps:
s1, firstly, fixedly installing ventilation pipelines at a certain height in a roadway in advance, and selecting and arranging the ventilation pipelines at positions where the pipelines are not easy to damage in the installation process;
s2, extending one end of the ventilation pipeline out of the roadway to an external space with good ventilation, and connecting the extended end of the ventilation pipeline with ventilation equipment for introducing fresh air into the ventilation pipeline;
s3, carefully checking the number of upper corners and goaf boundaries of a coal face in the roadway, the number of the coal face near a coal mining machine, the number of the roof falling in the air, the number of the roof near a low-wind-speed roadway and the number of the blind roadways stopping wind by workers;
s4, preparing branch pipes, connecting the branch pipes to corners where gas is easy to butt joint and is counted, aligning discharge ports of the branch pipes to butt joint positions of the gas, and connecting ports of the branch pipes to a dispersing nozzle after butt joint;
and S5, after the dispersed nozzles are butted, connecting air volume detection equipment to each branch pipeline, transmitting an information output end of the air volume detection equipment to a control department through a data wire for display and reading, and then correspondingly controlling the ventilation equipment by a worker.
S6, after the corresponding treatment equipment and structure are installed, external ventilation equipment can be started, and the ventilation equipment absorbs external fresh air into the corresponding filtering structure to be filtered and then is discharged into a ventilation pipeline;
s7, dispersing the fresh air by the branch pipelines after the fresh air is discharged, measuring the air flow by the air quantity detection equipment, feeding the measured data back to the corresponding manual control department for display, and increasing the working electric power of the ventilation equipment by the staff when the flow velocity in part of the branch pipelines is small so as to improve the fresh air intake, and properly reducing the working power of the equipment when the air velocity in the branch pipelines is large so as to prevent the pipeline equipment from blasting;
s8, after the air quantity is adjusted, the air entering the branch pipeline is blown to the dispersing spray heads, the dispersing spray heads are driven to rotate through the fan blades and the bearing seats, so that the fresh air is discharged through the air exhaust holes, the fresh air is uniformly blown to all corners in the rotating process during discharging, the gas at all corners is dispersed, the fresh air carries the gas to gush out of the roadway at a certain air speed, and the gas prevention and control effect is achieved.
As preferred, ventilation equipment's quantity is total two, and the during operation used in turn, ventilation equipment all communicates with air pipe through the tee bend connecting pipe, two ventilation equipment's new trend output all is equipped with the solenoid valve, air pipe's surface connection installs the lateral conduit, and the lateral conduit carries out erection joint according to the position that needs of checking ventilate, the fixed surface of lateral conduit connects and installs amount of wind check out test set, the other end movable mounting of lateral conduit has dispersion shower nozzle, dispersion shower nozzle passes through the discharge port swing joint of bearing frame with the lateral conduit, dispersion shower nozzle's inside fixed mounting has the fan blade, the surface of dispersion shower nozzle is located the top of fan blade and has seted up the hole of airing exhaust.
Preferably, the ventilation duct in S1 is fixed by being attached to a position 1.5 m or more from the floor surface.
Preferably, the wind speed for preventing the gas from being accumulated in the layered manner in S7 is more than 0.5 to 1 m/S, and if the cracks of the roof plate continuously have more gas gushes, the roof plate can be tightly backed by wood plates and filled with loess.
Preferably, S6 well ventilation equipment is equipped with two, and all is connected with the air pipe, and when a ventilation equipment can not work in time start reserve ventilation equipment, alright incessant new trend of sending into to the tunnel like this for better prevent the emergence possibility of gas accident, and two ventilation equipment alternate use, can prevent that equipment long-term work from leading to generating heat to reduce its life.
Preferably, the gas control needs to timely connect a fresh air pipeline to blow away and discharge gas aiming at the boundary of the goaf in the process of construction and tunneling, so that potential safety hazards caused by the increase of the concentration of accumulated gas are prevented.
Compared with the prior art, the invention has the advantages and positive effects that,
1. the overall treatment method is reasonable in design, and particularly, when the dispersion spray head is arranged in work, external fresh air is introduced to blow fan blades, so that the dispersion spray head is driven to rotate, the exhaust holes in the rotation discharge fresh air to corresponding upper corners and goafs to disperse gas, and the fresh air is discharged out of a roadway along with airflow of the roadway, so that the dispersion spray head and branch pipelines arranged at each point can disperse gas in a large range, the concentration of dangerous gas is reduced, and the flow speed of the fresh air at each position is detected through air quantity detection equipment to prevent and control the safety problem of the gas;
2. and through being equipped with two ventilation equipment, and two ventilation equipment all are connected with air pipe, start reserve ventilation equipment that can be timely when a ventilation equipment can not the during operation, alright incessant new trend is sent into to the tunnel like this for better prevent the emergence possibility of gas accident, and two ventilation equipment alternate use can prevent that equipment long-term work from leading to generating heat to reduce its life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.
Fig. 1 is a schematic view of a roadway and a treatment device installation of a gas treatment method provided in embodiment 1;
FIG. 2 is a schematic partial cross-sectional view of a divergent nozzle of the method for gas remediation as provided in example 1;
FIG. 3 is a schematic cross-sectional view of a dispersion nozzle of the method for gas remediation as provided in example 1;
FIG. 4 is a treatment flow chart of a gas treatment method according to example 1;
FIG. 5 is a schematic diagram of the gas distribution of a gas treatment method provided in example 1;
in the above figures, 1, a ventilation device; 2. a ventilation duct; 3. a branch pipe; 4. air quantity detection equipment; 5. dispersing the spray heads; 501. a bearing seat; 502. a fan blade; 503. and air exhaust holes.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the present invention is not limited to the specific embodiments of the present disclosure.
Embodiment 1, as shown in fig. 4, the invention provides a method for gas control, which comprises the following control equipment and structures: the device comprises ventilation equipment, a ventilation pipeline, branch pipelines, air quantity detection equipment, a dispersing sprayer, a bearing seat, fan blades and an exhaust hole, wherein the equipment for gas control and the structure installation method comprise the following steps: firstly, fixedly installing ventilation pipelines at a certain height in a roadway in advance, selecting and arranging the positions of the pipelines which are not easy to damage in the installation process, wherein the ventilation pipelines are installed at the positions which are more than 1.5 meters away from the ground for fixing, and are fixed on wall plates on the side surfaces of the roadway in a welding mode for ensuring the fixing, then extending one end of each ventilation pipeline out of the roadway to an external space with good ventilation, connecting the extending end of each ventilation pipeline with ventilation equipment for introducing fresh air into the ventilation pipeline, wherein the external space must ensure that the air is at a circulating position to ensure that the fed fresh air does not contain any harmful gas, then carefully checking the corners and the number of goaf boundaries on a coal face in the roadway, the number of goaf boundaries near a coal mining machine of the coal face, the space where a top plate falls, the vicinity of a top plate of a low-wind-speed roadway and a, checking and confirming for more than three times to ensure no dead angle, preparing branch pipelines after checking, connecting branch pipelines to the corners of the checked gas which are easy to be butted, aligning the discharge ports of the branch pipelines to the butted positions of the gas, connecting the ports of the branch pipelines to dispersion nozzles after butting, connecting air quantity detection equipment to each branch pipeline after the dispersion nozzles are butted, transmitting the information output ends of the air quantity detection equipment to a control department through a data wire for display and reading, and then correspondingly controlling ventilation equipment by a worker, wherein when the dispersion nozzles work, external fresh air is introduced to blow fan blades so as to drive the dispersion nozzles to rotate, and when the exhaust holes rotate, the fresh air is discharged to the corresponding upper corner angles and the mined-out area and is discharged out of a tunnel along with the air flow of the tunnel, the dispersion nozzles installed in this way and the branch pipelines installed at each point, the device can disperse gas in a large range, reduce the concentration of dangerous gas, detect the flow speed of fresh air at each position through the air volume detection device to prevent and treat the safety problem of the gas, after corresponding treatment equipment and structures are installed, external ventilation equipment can be started, the ventilation equipment absorbs the external fresh air, filters the external fresh air through a corresponding filtering structure and discharges the filtered fresh air into a ventilation pipeline, wherein two ventilation equipment are arranged and are connected with the ventilation pipeline, when one ventilation equipment cannot work, standby ventilation equipment can be started timely, so that the fresh air can be sent into a roadway uninterruptedly, the possibility of gas accidents can be prevented, the two ventilation equipment can be used alternately, the heat generation caused by the long-term work of the equipment can be prevented, the service life of the equipment can be shortened, after the fresh air is discharged, the fresh air is dispersed through a branch pipeline, and then the size of air flow is measured through the air volume detection device, the tested data is fed back to a corresponding manual control department for display, when the flow velocity in part of the branch pipelines is small, the working power of the ventilation equipment is increased by workers, so that the fresh air intake is improved, when the air velocity in the branch pipelines is large, the working power of the equipment can be properly reduced, the explosion of the pipeline equipment is prevented, the air volume and the air velocity are more than 0.5 to 1 m/s, after the air volume is adjusted, the air entering the branch pipelines blows to the dispersion spray heads, the dispersion spray heads are driven to rotate through fan blades and bearing seats, so that the fresh air is discharged through the air exhaust holes, the fresh air is uniformly blown to all corners in the rotating process during the discharge, so that the gas at all corners is dispersed, the fresh air carries the gas to flow out of a roadway at a certain air velocity, the effect of gas prevention and control is achieved, the fresh air pipelines are timely connected to the boundary of a goaf to blow away and discharge the gas in the process of gas control in the construction, and potential safety hazards caused by the increase of the concentration of accumulated gas are prevented.
As shown in fig. 1-3, the invention provides a method for gas control, wherein two ventilation devices are provided, and are used alternately during operation, the ventilation devices are communicated with a ventilation pipeline through a three-way connecting pipe, the fresh air output ends of the two ventilation devices are provided with electromagnetic valves, the electromagnetic valves can be opened and closed according to the opening and closing of the ventilation devices, the ventilation devices are opened and closed when opened, the surface of the ventilation pipeline is connected and provided with branch pipelines, the branch pipelines are installed and connected according to the positions needing ventilation of inventory, the ventilation pipeline is installed and extended along with the excavation engineering, the air volume is increased along with the excavation depth, the surface of the branch pipeline is fixedly connected and provided with an air volume detection device, the other end of the branch pipeline is movably provided with a dispersion nozzle, and the dispersion nozzle is movably connected with the discharge end of the branch pipeline through a bearing seat, the fan blades are fixedly installed inside the dispersing nozzle, and the surface of the dispersing nozzle is located above the fan blades and provided with air exhaust holes.
The inventor installs air quantity detection equipment in order to make the gas control method more intelligent, and the equipment improves the monitoring effect on the air quantity and prevents the harm caused by gas accumulation.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in other forms, and any person skilled in the art may apply the above modifications or changes to the equivalent embodiments with equivalent changes, without departing from the technical spirit of the present invention, and any simple modification, equivalent change and change made to the above embodiments according to the technical spirit of the present invention still belong to the protection scope of the technical spirit of the present invention.
Claims (6)
1. A method for gas control is characterized in that: the gas treatment comprises the following treatment equipment and structures: the device comprises ventilation equipment, a ventilation pipeline, branch pipelines, air quantity detection equipment, a dispersing sprayer, a bearing seat, fan blades and an exhaust hole, wherein the equipment for gas control and the structure installation method comprise the following steps:
s1, firstly, fixedly installing ventilation pipelines at a certain height in a roadway in advance, and selecting and arranging the ventilation pipelines at positions where the pipelines are not easy to damage in the installation process;
s2, extending one end of the ventilation pipeline out of the roadway to an external space with good ventilation, and connecting the extended end of the ventilation pipeline with ventilation equipment for introducing fresh air into the ventilation pipeline;
s3, carefully checking the number of upper corners and goaf boundaries of a coal face in the roadway, the number of the coal face near a coal mining machine, the number of the roof falling in the air, the number of the roof near a low-wind-speed roadway and the number of the blind roadways stopping wind by workers;
s4, preparing branch pipes, connecting the branch pipes to corners where gas is easy to butt joint and is counted, aligning discharge ports of the branch pipes to butt joint positions of the gas, and connecting ports of the branch pipes to a dispersing nozzle after butt joint;
s5, after the dispersed nozzles are butted, air quantity detection equipment needs to be connected to each branch pipeline, the information output end of the air quantity detection equipment is transmitted to a control department through a data wire to be displayed and read, and then a worker controls the ventilation equipment correspondingly;
s6, after the corresponding treatment equipment and structure are installed, external ventilation equipment can be started, and the ventilation equipment absorbs external fresh air into the corresponding filtering structure to be filtered and then is discharged into a ventilation pipeline;
s7, dispersing the fresh air by the branch pipelines after the fresh air is discharged, measuring the air flow by the air quantity detection equipment, feeding the measured data back to the corresponding manual control department for display, and increasing the working electric power of the ventilation equipment by the staff when the flow velocity in part of the branch pipelines is small so as to improve the fresh air intake, and properly reducing the working power of the equipment when the air velocity in the branch pipelines is large so as to prevent the pipeline equipment from blasting;
s8, after the air quantity is adjusted, the air entering the branch pipeline is blown to the dispersing spray heads, the dispersing spray heads are driven to rotate through the fan blades and the bearing seats, so that the fresh air is discharged through the air exhaust holes, the fresh air is uniformly blown to all corners in the rotating process during discharging, the gas at all corners is dispersed, the fresh air carries the gas to gush out of the roadway at a certain air speed, and the gas prevention and control effect is achieved.
2. The method for gas control according to claim 1, wherein: the quantity of ventilation equipment is total two, and the during operation uses in turn, ventilation equipment all communicates with air pipe through the tee bend connecting pipe, two ventilation equipment's new trend output all is equipped with the solenoid valve, air pipe's surface connection installs the lateral conduit, and the lateral conduit carries out erection joint according to the position that needs of checking ventilate, the fixed surface of lateral conduit connects and installs amount of wind check out test set, the other end movable mounting of lateral conduit has dispersion shower nozzle, dispersion shower nozzle passes through the discharge port swing joint of bearing frame with the lateral conduit, dispersion shower nozzle's inside fixed mounting has the flabellum, the air exit hole has been seted up to the surface that dispersion shower nozzle is located the top of flabellum.
3. The method for gas control according to claim 1, wherein: the ventilation duct in the S1 is fixed by being installed at a position more than 1.5 meters away from the ground.
4. The method for gas control according to claim 1, wherein: in the S7, the wind speed for preventing the gas from accumulating in a layered mode is more than 0.5-1 m/S, and if more gas continuously flows out of cracks of the top plate, the top plate can be tightly backed by wood plates and filled with loess.
5. The method for gas control according to claim 1, wherein: ventilation equipment is equipped with two among S6, and all is connected with the air pipe, and when a ventilation equipment can not the during operation start reserve ventilation equipment in time, alright incessant new trend is sent into to the tunnel like this for better prevent the emergence possibility of gas accident, and two ventilation equipment alternate use can prevent that equipment long-term work from leading to generating heat to reduce its life.
6. The method for gas control according to claim 1, wherein: the gas management needs to be timely connected with a fresh air pipeline to blow away and discharge gas aiming at the boundary of the goaf in the construction and tunneling process, so that potential safety hazards caused by the rising of gas accumulation concentration are prevented.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685138.5A CN111894657A (en) | 2020-07-16 | 2020-07-16 | Gas treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010685138.5A CN111894657A (en) | 2020-07-16 | 2020-07-16 | Gas treatment method |
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| CN111894657A true CN111894657A (en) | 2020-11-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544908A (en) * | 2022-04-24 | 2022-05-27 | 山西和运能源服务有限公司 | Coal mine low-concentration gas heating device |
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| CN205189929U (en) * | 2015-11-19 | 2016-04-27 | 中国矿业大学(北京) | A ventilation unit that is used for high gas long distance to combine digging tunnel |
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| CN108798744A (en) * | 2018-03-15 | 2018-11-13 | 成都兰腾科技有限公司 | A kind of safety of coal mines energy-saving ventilation system |
| CN109252884A (en) * | 2018-09-13 | 2019-01-22 | 辽宁工程技术大学 | A kind of gob side entry retaining working face Y type ventilation anti-disaster method of pressure regulation |
| CN111022110A (en) * | 2020-01-14 | 2020-04-17 | 山西晋城无烟煤矿业集团有限责任公司 | Method for controlling gas in one-end roadway of wind-cut driving working face during mine windward period |
-
2020
- 2020-07-16 CN CN202010685138.5A patent/CN111894657A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1438405A (en) * | 2003-01-27 | 2003-08-27 | 张朝喜 | Method for preventing coal-mine underground gas and coal-dust from explosion |
| CN201810334U (en) * | 2010-09-28 | 2011-04-27 | 江苏省矿业工程集团有限公司第四工程处 | Air return corner gas system utilizing compressed air spray |
| CN205189929U (en) * | 2015-11-19 | 2016-04-27 | 中国矿业大学(北京) | A ventilation unit that is used for high gas long distance to combine digging tunnel |
| CN106761878A (en) * | 2015-11-19 | 2017-05-31 | 成都九十度工业产品设计有限公司 | A kind of mine ventilation system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544908A (en) * | 2022-04-24 | 2022-05-27 | 山西和运能源服务有限公司 | Coal mine low-concentration gas heating device |
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Application publication date: 20201106 |