CN1800585A - Coal mine gas explosion preventing method - Google Patents
Coal mine gas explosion preventing method Download PDFInfo
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- CN1800585A CN1800585A CN 200510037653 CN200510037653A CN1800585A CN 1800585 A CN1800585 A CN 1800585A CN 200510037653 CN200510037653 CN 200510037653 CN 200510037653 A CN200510037653 A CN 200510037653A CN 1800585 A CN1800585 A CN 1800585A
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- methane
- coal mine
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- explosion
- mine gas
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Abstract
The invention relates to a method for avoid fire damp explosion of coal mine, which is formed by a nitrogen channel and a methane processing storeroom. By feeding nitrogen gas in high purity to the under-well channel of coal mine and the methane collector on the well open, the methane and air in the well can be extracted to avoid the explosion completely with saved energy, simple design and improved safety.
Description
Technical field: the present invention relates to a kind of new method that prevents coal mine gas from explosion.
Background technology: coal mine gas from explosion, be actually gas in the colliery (methane) concentration and reach explosion limit (5%-16%) back and airborne oxygen and meet the naked light violent chemical reaction that emits light and heat in a short period of time, act on and cause that people's lives and properties incur loss thereby damage.This explosive reaction has three principal elements: 1, methane, and its concentration will reach the limit of blast; 2, air (oxygen) is arranged; 3, naked light (being thermal source) is arranged.In coal mine roadway, take care and prevent naked light, generation that can the minimizing accident, but it is absolutely not fundamentally stopping, because blown out spark, frictions such as mechanical digging, instrument digging have generation of static electricity, sending out has spark, plant equipment has been grown the duration of runs, can produce a large amount of heat energy, when temperature reaches certain value, coal dust in the tunnel can spontaneous combustion by heating and produce blast, so that naked light is kept away is unavoidable.The concentration of methane adopts the method that extracts to control, methane is danger, also be a kind of resource simultaneously, can adopt air exhauster to extract as industrial chemicals or fuel, extraction can reduce concentration certainly, but can not tackle the problem at its root, because methane is to be in the same place with coal, oil (in the ore deposit that has oil being arranged) symbiosis, when mining, methane also just overflows, and the methane outburst amount of the mine working face that has is up to 41m
3/ min also can produce carbon monoxide as the accident of blasting in addition, and this also is a kind of imflammable gas of colorless and odorless, and the limit chance naked light that this kind gas concentration reaches blast also can set off an explosion, and the poisonous meeting of carbon monoxide is poisoned the people.So the method for depending merely on extraction methane, carbon monoxide can not prevent the generation of explosion accident fully.The best way is exactly the content of control oxidation, does not have oxygen (air), and blast just can not take place.Purpose of the present invention just provides a kind of new method that prevents coal mine gas from explosion, and it can control the content of the air in the coal mine roadway effectively, thereby thoroughly stops potential safety hazard.
Summary of the invention: the object of the present invention is achieved like this.A kind of new method that prevents coal mine gas from explosion, it is made up of defeated nitrogen pipeline, system nitrogen factory, methane processing depots, it is characterized in that: an end of described defeated nitrogen pipeline is connected the work plane of system nitrogen factory, other end feeding coal mine roadway; Be provided with the methane collection device at well head, its other end connects methane processing depots.Simplicity of design of the present invention, easy to operate, the generation that can thoroughly stop accident.
Description of drawings: Fig. 1 is a structural representation of the present invention
1, system nitrogen factory 2, defeated nitrogen pipeline 3, work plane 4, methane collection device 5, methane processing depots
The specific embodiment: the invention will be further described below in conjunction with accompanying drawing.
In the drawings, a kind of new method that prevents coal mine gas from explosion, it is made up of input nitrogen pipeline 2, methane processing depots 5, it is characterized in that: an end of described defeated nitrogen pipeline 2 is connected to system nitrogen factory 1, and the other end feeds the work plane 3 of coal mine roadway; Be provided with methane collection device 4 at well head, its other end connects methane processing depots 5.During concrete enforcement, the nitrogen that will have certain pressure is from the defeated nitrogen pipeline 2 of system nitrogen factory 1 warp, be sent to mine laneway work plane 3 and mine bottom, replace air with nitrogen, because of the density (1.25 grams per liter) of nitrogen bigger than the density (0.714 grams per liter) of methane, nitrogen has occupied work plane 3 and mine bottom, methane is up caught up with, whole tunnel has been full of the mist of methane and nitrogen, constantly fill nitrogen into, constantly go up earthward through well head methane collection device 4 simultaneously and extract methane, make work plane 3 and well degree have only methane and nitrogen and do not have oxygen, singly methane is arranged and do not have oxygen just can not to burn and explode, even naked light was arranged originally or have the coal dust burning also can extinguish.Pour nitrogen, reduced the concentration of shaft bottom methane and no longer had oxygen, in fact under the situation of no oxygen, no matter how much concentration of methane and nitrogen is, ratio how, can not produce blast.Methane gas from well head is collected through methane collection device 4 though be mixed with nitrogen, can not set off an explosion as making industrial chemicals and fuel after treatment yet.During underground work, the miner can have the oxygen bag of capacity and have the sodium peroxide apparatus of oxygen supply that carbon dioxide can be changed into oxygen.
Claims (1)
1, a kind of new method that prevents coal mine gas from explosion, it is made up of input nitrogen pipeline (2), methane processing depots (5), it is characterized in that: an end of described defeated nitrogen pipeline (2) is connected to system nitrogen factory (1), and the other end feeds the work plane (3) of coal mine roadway; Be provided with methane collection device (4) at well head, its other end connects methane processing depots (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510037653 CN1800585A (en) | 2005-01-07 | 2005-01-07 | Coal mine gas explosion preventing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510037653 CN1800585A (en) | 2005-01-07 | 2005-01-07 | Coal mine gas explosion preventing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1800585A true CN1800585A (en) | 2006-07-12 |
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ID=36810758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510037653 Pending CN1800585A (en) | 2005-01-07 | 2005-01-07 | Coal mine gas explosion preventing method |
Country Status (1)
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| CN (1) | CN1800585A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146803A (en) * | 2011-02-14 | 2011-08-10 | 包月祥 | Collection and utilization system outside coal mine gas well |
| CN102536305A (en) * | 2012-03-06 | 2012-07-04 | 中国矿业大学 | Method for increasing permeability of inert gas and extracting gas |
| CN111219203A (en) * | 2020-03-19 | 2020-06-02 | 中铁二院工程集团有限责任公司 | Gas discharge system of supplementary gallery |
| CN113250736A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN114753878A (en) * | 2022-06-14 | 2022-07-15 | 山西中能华信矿业技术有限公司 | Colliery mine gas transfinites and detects ventilation unit |
-
2005
- 2005-01-07 CN CN 200510037653 patent/CN1800585A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102146803A (en) * | 2011-02-14 | 2011-08-10 | 包月祥 | Collection and utilization system outside coal mine gas well |
| CN102536305A (en) * | 2012-03-06 | 2012-07-04 | 中国矿业大学 | Method for increasing permeability of inert gas and extracting gas |
| CN111219203A (en) * | 2020-03-19 | 2020-06-02 | 中铁二院工程集团有限责任公司 | Gas discharge system of supplementary gallery |
| CN111219203B (en) * | 2020-03-19 | 2024-07-02 | 中铁二院工程集团有限责任公司 | Gas emission system of auxiliary tunnel |
| CN113250736A (en) * | 2021-05-24 | 2021-08-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN113250736B (en) * | 2021-05-24 | 2024-02-13 | 华北科技学院(中国煤矿安全技术培训中心) | Gas explosion shock wave pipe network test system capable of detecting concentration in real time |
| CN114753878A (en) * | 2022-06-14 | 2022-07-15 | 山西中能华信矿业技术有限公司 | Colliery mine gas transfinites and detects ventilation unit |
| CN114753878B (en) * | 2022-06-14 | 2022-08-26 | 山西中能华信矿业技术有限公司 | Ventilation device for gas overrun detection of coal mine |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |