scholarly journals Focusing on the patterns and characteristics of extraordinarily severe gas explosion accidents in Chinese coal mines

2018 ◽  
Vol 117 ◽  
pp. 390-398 ◽  
Author(s):  
Jinjia Zhang ◽  
David Cliff ◽  
Kaili Xu ◽  
Greg You
Keyword(s):  
Coal Mines ◽  
Gas Explosion ◽  
Explosion Accidents ◽  
Chinese Coal

Fatal gas explosion accidents on Chinese coal mines and the characteristics of unsafe behaviors: 2000–2014

2017 ◽  
Vol 92 ◽  
pp. 173-179 ◽  
Author(s):  
Wentao Yin ◽  
Gui Fu ◽  
Chun Yang ◽  
Zhongan Jiang ◽  
Kai Zhu ◽  
...  
Keyword(s):  
Coal Mines ◽  
Gas Explosion ◽  
Unsafe Behaviors ◽  
Explosion Accidents ◽  
Chinese Coal

scholarly journals Experimental Study on Injuries to Animals Caused by a Gas Explosion in a Large Test Laneway

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Runzhi Li ◽  
Zhigang Zhang ◽  
Rongjun Si ◽  
Lei Wang ◽  
Shengnan Li ◽  
...  
Keyword(s):  
Coal Mines ◽  
Damage Mechanism ◽  
Test System ◽  
Sprague Dawley ◽  
Gas Explosion ◽  
Mixed Gas ◽  
Sd Rats ◽  
Underground Coal Mines ◽  
Hazardous Gases ◽  
Explosion Accidents

Gas explosion accidents in underground coal mines caused a significant number of casualties. By using a large laneway test system, the damage to Sprague-Dawley (SD) rats at locations at different distances from the source of ignition along the direction of propagation of an explosion was investigated after 100 m3 of the gas-air mixture was ignited and exploded. In this way, the data pertaining to explosion flames and explosion pressures at different propagation distances were obtained to investigate the propagation of explosion flames and explosion pressures along the laneway. Besides, the damage to SD rats at different propagation distances was statistically analyzed. Furthermore, the damage mechanism of explosion flames, explosion pressures, and hazardous gases on humans or animals was discussed. The results indicated that explosive blast injury induced by the gas explosion was the primary reason for the death of animals and SD rats at a distance equal to or greater than 80 m from the point of ignition under the effects of an explosive blast even though SD rats at a distance of 240 m were killed. During the explosion of 100 m3 of mixed gas, the explosion flames propagated 40 m from the point of ignition, and the SD rats in the cage located some 40 m from the point of ignition were subjected to combined damage involving being burned at high temperature and suffering the effects of the explosive blast. These findings provide a theoretical basis for emergency rescue and salvage after gas explosion accidents in underground coal mines.

A study on source identification of gas explosion in coal mines based on gas concentration

Fuel ◽  
2021 ◽  
Vol 290 ◽  
pp. 120053
Author(s):  
Baiwei Lei ◽  
Chenguang Zhao ◽  
Binbin He ◽  
Bing Wu
Keyword(s):  
Source Identification ◽  
Coal Mines ◽  
Gas Explosion ◽  
Gas Concentration

scholarly journals Application Runs the Show: What Can We Learn about the Future from the Past?

Proceedings ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. 53
Author(s):  
Nicolae Barsan
Keyword(s):  
Safety Issue ◽  
Gas Explosion ◽  
The Past ◽  
The Future ◽  
Explosion Accidents

SMOX-based sensors appeared as a response to a very serious safety issue in Japan, namely gas explosion accidents related to leakages of piped and bottled cooking gas. […]

Temperature rise characteristics of a new designed disc for inclined downward belt conveyor

2014 ◽  
Vol 66 (6) ◽  
pp. 671-677
Author(s):  
Qingrui Meng
Keyword(s):  
Temperature Rise ◽  
Coal Mines ◽  
Disc Brake ◽  
Belt Conveyor ◽  
Gas Explosion ◽  
Running Speed ◽  
Content Type ◽  
Practical Applications ◽  
Disc Surface ◽  
Braking Process

Purpose – The aim of this work is to reveal the temperature rise characteristics of the new designed disc during a braking process. In underground coal mines, the highest temperature of the disc brake used for inclined downward belt conveyors should be < 150 to prevent gas explosion during a braking process. To meet the requirements, a new type of disc was designed. Design/methodology/approach – By using ANSYS software, the disc surface and interior temperature rise variations, effect of braking time and running speed on temperature rise are analyzed numerically. Findings – The results show that the new designed disc can meet the coal mines’ requirements well, during the braking process the disc surface temperature increases at first and then decreases, there is an obvious temperature gradient in the axial direction; when running speed increases to two times of the rated one, the highest temperature nearly reaches 150; and a prolonged braking time can decrease the highest temperature effectively. Research limitations/implications – It indicates that the disc brake should act as earlier as possible to slow down the belt conveyor when overspeed occurs; and when the running speed increases to two times of the rated one, the braking time must be prolonged to prevent gas explosion. Originality/value – Research findings of this paper provides theoretical basis for the practical applications of the disc brake used for inclined downward belt conveyor.

CHl'IRACTERIZATION OF SUBSIDENCE LAND RECLAIMED,BY HYDRAULIC DREDGE PUMP IN CHINESE COAL MINES

1993 ◽  
Vol 1993 (2) ◽  
pp. 839-844 ◽  
Author(s):  
Zhenqi Hu ◽  
X.Y. Chen ◽  
Q.L. Li ◽  
J.L. Hu ◽  
Y.P. Ding
Keyword(s):  
Coal Mines ◽  
Chinese Coal
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