Experiment study on the propagation laws of gas and coal dust explosion in coal mine

2009 ◽  
Vol 15 (3) ◽  
pp. 262-266 ◽  
Author(s):  
Rong-jun Si ◽  
Run-zhi Li ◽  
Lei Wang ◽  
Zi-ke Wu
Keyword(s):  
Coal Mine ◽  
Coal Dust ◽  
Dust Explosion ◽  
Experiment Study

Study on Regularity of Coal Mine Blasting Accidents of China after 2000

2013 ◽  
Vol 368-370 ◽  
pp. 2014-2020
Author(s):  
Ji Ye Dong ◽  
Gui Fu ◽  
Ze Chen ◽  
Shuai Dong Jia
Keyword(s):  
Coal Mine ◽  
Main Type ◽  
Coal Dust ◽  
Dust Explosion ◽  
The Past ◽  
Coal Mine Gas ◽  
Working Face ◽  
Parabolic Trajectory ◽  
The Common ◽  
Coal Enterprises

In this article, 133 massive colliery blasting accidents were statistically analyzed in China after 2000, mainly from two aspects of the accident number and death number, three aspects such as the type of accidents, the time rule of accidents, and provincial were analyzed statistically; 72 massive colliery blasting accidents caused by blasters were analyzed statistically with regard to the unsafe act of blasters. The statistical results show that the accident and death number presents a downward opening parabolic trajectory by year; The time of the accident is more concentrated, and the fate casualties happened frequently around March, July, November and December, February is the least; Coal mine gas accident is the main type of blasting accidents, and the coal dust explosion accident causes most deaths averagely; The past statistical method seriously neglected the seriousness of blasting accidents; The coal mine underwent massive colliery blasting accidents distribute widely, but six provinces (Guizhou, Shanxi, Heilongjiang, Sichuan, Henan, Hunan, Liaoning) are the key places of blasting accidents; There are 22 species of unsafe act to blasters, the most common unsafe act is no working face environmental inspection, material and tools be used unsafely and improperly. Coal enterprises, government, and regulators should strengthen the prevention of the key time, accident style, region, and the common unsafe blasting act to the regularity of coal mine blasting accidents.

The Solid Barrier Explosion Device of the Gas Recoil Type of the Extracting Coal Face of the Coal Mine

2011 ◽  
Vol 121-126 ◽  
pp. 3015-3019 ◽  
Author(s):  
Chun Rong Wei ◽  
Min Qiang Xu ◽  
Jian Hua Sun ◽  
Xian Wei Zhang
Keyword(s):  
Shock Wave ◽  
High Temperature ◽  
Coal Mine ◽  
Coal Dust ◽  
Structure Design ◽  
Dust Explosion ◽  
Gas Explosion ◽  
Coal Face

Aiming at the limitation of the roadway-type barrier explosion device which is being used in the coal mine, this paper suggests to establish the gas recoil type barrier explosion device. Using the mechanism of the gas recoil type, it made the structure design of the solid barrier explosion device of the circle-arch roadway. The device has the better effect on the elimination of the damage and the influence of the high-temperature flame of the gas and coal dust explosion and the overpressure damage of the shock wave. Especially, it can have a more realistic function for the secondary explosion or multiple explosions of the underground gas explosion.

Preparation and performance of novel APP/NaY–Fe suppressant for coal dust explosion

2021 ◽  
Vol 69 ◽  
pp. 104374
Author(s):  
Qingxi Wei ◽  
Yansong Zhang ◽  
Kun Chen ◽  
Bo Liu ◽  
Xiangbao Meng ◽  
...  
Keyword(s):  
Coal Dust ◽  
Dust Explosion ◽  
And Performance

scholarly journals Evaluation of the Risk Factors on Coal Dust Explosion in Warehouse

2016 ◽  
Vol 77 ◽  
pp. 06014
Author(s):  
Latana Chanthaphasouk ◽  
Kreangkrai Maneeintr ◽  
Pinyo Meechumna ◽  
Suteera Luengwattanapong ◽  
Chantamanee Poonjarernsilp
Keyword(s):  
Risk Factors ◽  
Coal Dust ◽  
Dust Explosion

scholarly journals Theoretical basis for the formation of damaging factors during the coal aerosol explosion

2021 ◽  
Vol 15 (4) ◽  
pp. 130-138
Author(s):  
Olena Zavialova ◽  
Viktor Kostenko ◽  
Natalia Liashok ◽  
Mykola Grygorian ◽  
Tetiana Kostenko ◽  
...  
Keyword(s):  
Mine Working ◽  
Gaseous Medium ◽  
Coal Dust ◽  
Theoretical Research ◽  
Dust Explosion ◽  
Characteristic Points ◽  
Explosion Mechanism ◽  
Mine Workings ◽  
Negative Factors ◽  
Dust Deposits

Purpose. Assessing the process of damaging factors formation during the coal aerosol explosion in mine workings on the basis of theoretical research of the explosion of coal dust deposits in order to substantiate promising methods of protecting miners from their impact. Methods. An integrated approach is used, which includes a critical analysis of literature data on the occurrence and development of coal aerosol explosions in mine workings; theoretical research into the state of the gaseous medium at the characteristic points of the development diagram of the coal dust deposits explosion as a result of mining operations based on the laws of classical physics and chemistry. Findings. The main aspects of the explosion mechanism of dust in a powdery state, accumulated on the surfaces along the mine working perimeter, and the formation of such negative factors as the effect of gaseous medium accelerated movement, have been revealed; high temperature formed during coal and methane detonative combustion; increased gas pressure. The revealed aspects of the dust explosion mechanism make it possible to determine the main directions for protection of miners caught in the explosion. The diagram of the development of settled coal dust explosion along the mine working with normal ventilation conditions, taking into account the influence of seismic waves, has been improved. Originality. Analytical dependences, reflecting the value of gas energy at characteristic points of the diagram, have been determined, and the dynamics of the formation of negative factors caused by the explosion have been revealed. Practical implications. Possible ways of protecting miners from the impact of negative factors caused by the coal aerosol explosion and reducing the severe consequences of such accidents are proposed.

scholarly journals Experimental Study on Inhibiting the Gas and Coal Dust Explosion by Water Mist in Tube with Obstacle

2011 ◽  
Vol 26 ◽  
pp. 1851-1856 ◽  
Author(s):  
Li Zhen-feng ◽  
Cao Shao-long ◽  
An An ◽  
Hu Peng
Keyword(s):  
Experimental Study ◽  
Coal Dust ◽  
Water Mist ◽  
Dust Explosion
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