Pressure characteristics and dynamic response of coal mine refuge chamber with underground gas explosion

2014 ◽  
Vol 30 ◽  
pp. 37-46 ◽  
Author(s):  
Boyi Zhang ◽  
Wei Zhao ◽  
Wei Wang ◽  
Xinghua Zhang
Keyword(s):  
Dynamic Response ◽  
Coal Mine ◽  
Gas Explosion ◽  
Pressure Characteristics

scholarly journals A Novel Design of Rescue Capsule considering the Pressure Characteristics and Thermal Dynamic Response with Thermomechanical Coupling Action Subjected to Gas Explosion Load

2017 ◽  
Vol 2017 ◽  
pp. 1-12 ◽  
Author(s):  
Xiaowei Zhai ◽  
Shibo Wu ◽  
Kai Wang ◽  
Xiaokun Chen ◽  
Haitao Li
Keyword(s):  
Dynamic Response ◽  
Coal Mine ◽  
Coupling Effect ◽  
Design Method ◽  
Thermomechanical Coupling ◽  
Structural Safety ◽  
Coupling Mechanism ◽  
Gas Explosion ◽  
Explosion Load ◽  
Mine Rescue

To ensure the structural safety and reliability of coal mine rescue capsule in disastrous surroundings after gas explosion, in this paper, the thermomechanical coupling effect on a certain structure subjected to gas explosion was analyzed, and then a novel rescue capsule with a combination of radius and square features was designed according to the underground surroundings and relevant regulations on mine rescue devices. Foremost, the coupling mechanism of thermal-fluid-solid interaction between gas explosion shock wave and rescue capsule and the thermal dynamic response of the capsule subjected to explosion load of gas/air mixture was investigated and revealed by employing LS-DYNA. The variation laws and characteristics of stress field, displacement field, and temperature field of the capsule were analyzed based on the simulation results. Results show that the structural safety, tightness, and reliability of the capsule meet the requirements of the national safety regulations. The design method presented in this work provides a new thought for design of coal mine rescue capsule.

scholarly journals Sartre as prosecutor of occupational murder: notes from a People's Tribunal in a French mine (1970)

2021 ◽  
Vol 99 ◽  
pp. 167-176
Author(s):  
Pascal Marichalar ◽  
Gerald Markowitz ◽  
David Rosner
Keyword(s):  
Coal Mine ◽  
Public Prosecutor ◽  
Gas Explosion ◽  
The Public ◽  
Northern France ◽  
Publicly Owned

On February 4, 1970, in the Fouquières-lès-Lens coal mine in northern France, sixteen miners were killed in a gas explosion (“firedamp,” grisou in French). This was an accident like many others before it, yet with a relatively high number of fatalities. The public prosecutor concluded, as usual, that there was no case against the publicly owned mine. No investigation was to be carried out. The accident had been the work of fate, of bad luck.

Influence of Initial Position of Sliding Device on Premixed Methane/air Gas Explosion Flame at Driving Face in Coal Mine

2021 ◽  
pp. 1-23
Author(s):  
Yulong Duan ◽  
Yanling Yang ◽  
Yuanbing Li ◽  
Jun Xu ◽  
Yuzhu Zhang ◽  
...  
Keyword(s):  
Coal Mine ◽  
Initial Position ◽  
Gas Explosion

Numerical Analysis of Water Mist Flow Field for Gas Explosion Suppression in Upper Corner

2011 ◽  
Vol 71-78 ◽  
pp. 4848-4851
Author(s):  
Fan Mao Meng ◽  
Zhi Chao Liu ◽  
Zhi Zhong Liu
Keyword(s):  
Numerical Analysis ◽  
Flow Field ◽  
Coal Mine ◽  
Water Mist ◽  
Gas Explosion ◽  
Gas Concentration ◽  
Methane Gas ◽  
Gas Accumulation ◽  
Explosion Suppression ◽  
Mist Flow

The water mist is an economical and environmental agent for gas explosion suppression. It can be applied in the commonly gas concentration zones and the gas accumulation zones which is difficult to reduce the concentration of methane gas. By numerical analysis, this paper studies the effect of the direction and the number of the nozzles, and the distance form the nozzles to the wall at X direction in upper corner in coal mine. For gas explosion suppression in upper corner, it can use one nozzle which direction is same as the wind and the distance is 2m.

Sign in / Sign up

Export Citation Format

Share Document