A system and method for preventing and controlling fires in coal mined-out areas
A goaf and coal technology, which is applied in fire prevention, dust prevention, mining equipment, etc., can solve problems such as difficult diffusion of inert gas, poor fire prevention and control effect in goaf, and poor inerting effect in goaf , to achieve precise prevention and control and improve the effect of fire prevention and control
Active Publication Date: 2021-04-13
CHINA UNIV OF MINING & TECH (BEIJING)
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The current drag pipe inert injection process system is mainly installed on the air inlet side. However, due to the "O" ring effect in the goaf, it is difficult for the inert gas injected by the hosting to diffuse to the air return side area, resulting in the mining area in the air return side area. The inerting effect of the goaf is not good, which causes the problem of poor fire prevention and control in the whole area of the goaf
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0031] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0032] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0033] figure 1 The system for preventing and controlling coal goaf fires provided by Embodiment 1 of the present invention, such as figure 1 As shown, the system includes: including: drag pipe inert injection device 6, which is connected with data processing device 4, and is used to inject inert gas into the goaf on the air inlet side; ground drilling inert injection device 8, which is connected with data processing device 4 , used to inject inert gas into the goaf on the return air side; the data acquisition d...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The embodiment of the invention discloses a system and method for preventing and controlling fires in coal mined-out areas, which relate to the technical field of coal mining research and can improve the fire prevention and control effect in the entire coal mined-out areas. The system includes a drag pipe inert injection device, which is used to inject inert gas into the goaf on the air inlet side; an inert injection device on the ground, used to inject inert gas into the goaf on the air return side; a data acquisition device on the air inlet side, Used to collect the first temperature and the first index gas concentration in the goaf on the air inlet side; the data acquisition device on the return air side is used to collect the second temperature and the second index gas concentration in the goaf on the return air side; data The processing device, the above-mentioned devices are connected respectively, is used to control the inert injection speed of the drag pipe inert injection device according to the first temperature and the first index gas concentration, and is also used to control the inert injection speed according to the second temperature and the second index gas concentration. Controlling the inert injection speed of the ground drilling inert injection device. The invention is mainly used for preventing and controlling fires in coal mined-out areas.
Description
technical field [0001] The invention relates to the technical field of coal mining research, in particular to a system and method for preventing and controlling fires in coal goafs. Background technique [0002] In the process of coal mining, as the degree of mining mechanization becomes higher and higher, the mining speed is faster and the mining intensity increases, a larger goaf is formed, and the accumulation of gas in the goaf leads to the return air flow and the working face. (Upper corner) Exceeding the limit of gas may easily cause spontaneous combustion of coal in the goaf, and may lead to a gas explosion accident in severe cases, which not only affects the economic benefits of the coal mine, but also seriously affects the safe production of the mine. [0003] For coal spontaneous combustion in goafs, technologies such as inert injection to prevent fire extinguishing, grouting to prevent fire extinguishing, and spraying inhibitors to prevent fire extinguishing are m...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21F5/00E21F7/00E21F17/18
CPCE21F5/00E21F7/00E21F17/18
Inventor 朱红青陆新晓胡林涛薛雪王成岩霍雨佳胡超
Owner CHINA UNIV OF MINING & TECH (BEIJING)