Results 21 to 30 of about 632,462 (160)

Characterization of explosion propagation of coal dust deposited by gas explosion convolutions in closed pipelines [PDF]

open access: yesMeitan xuebao
To explore the propagation characteristics of gas explosion-induced coal dust detonations in enclosed pipelines, a custom-developed experimental system was employed for gas explosions involving accumulated coal dust.
Bingyou JIANG   +6 more
doaj   +2 more sources

Experimental Study on the Ignition Sensitivity and Explosion Severity of Different Ranks of Coal Dust

open access: yesShock and Vibration, 2019
This study is conducted to examine the ignition sensitivity and explosion severity differences among different ranks of coal dust and reveal the causes underlying these differences.
Junfeng Wang   +4 more
doaj   +2 more sources

Ignition temperature and explosion pressure of suspended coal dust cloud under different conditions and suppression characteristics

open access: yesScientific Reports, 2023
The ignition and explosion processes of suspended coal dust clouds and their suppression characteristics are important aspects of dust prevention and control.
Tianqi Liu   +5 more
doaj   +2 more sources

Sound identification method of coal mine gas and coal dust explosion based on wavelet scattering transform [PDF]

open access: yesMeitan kexue jishu
To solve the problems of high false alarm rate and leakage rate of coal mine gas and coal dust explosion disaster alarm methods, and improve the accuracy of coal mine gas and coal dust explosion perception, sound identification method of coal mine gas ...
Xingchen YU, Xiaowei LI
doaj   +2 more sources

Explosion Characteristics and Flame Propagation Behavior of Mixed Dust Cloud of Coal Dust and Oil Shale Dust

open access: yesEnergies, 2019
Coal and oil shale are often mined and utilized together, and mixed dust is easily formed in these processes. In order to ensure safe production in these processes, the explosion characteristics of mixed dust were studied. Using a Godbert-Greenwold (G-G)
Junfeng Wang   +5 more
doaj   +2 more sources

Study on the Explosion Mechanism of Low-Concentration Gas and Coal Dust

open access: yesFire
In coal mines, the mixture of coal dust and gas is more ignitable than gas alone, posing a high explosion risk to workers. Using the explosion tube, this study examines the explosion propagation characteristics and flame temperature of low-concentration ...
Li Liu   +4 more
doaj   +2 more sources

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

High Prevalence of Respiratory Symptoms Among Workers in the Development Section of a Manually Operated Coal Mine in a Developing Country: A Cross Sectional Study. [PDF]

open access: yes, 2007
Few studies of miners have been carried out in African countries; most are from South Africa, where the working conditions are assumed to be better than in the rest of Africa.
Mamuya, Simon H D   +9 more
core   +1 more source

Research of influence factors on characteristic parameters of coal dust explosio

open access: yesGong-kuang zidonghua, 2014
Influence of particle size, concentration and ignition energy of coal dust on the maximum pressure and its rising rate of coal dust explosion were researched by use of 20 L spherical explosion equipment. The research results show that under the condition
LIU Zhentang, GUO Rulin, XI Runze
doaj   +1 more source

Effect of coal dust parameters on gas-coal dust explosions in pipe networks

open access: yesGeomatics, Natural Hazards & Risk, 2022
To study the effects of coal dust particle size and mass of coal dust on gas-coal dust hybrid explosions, we conducted sedimentary gas-coal dust explosion experiments using a pipe network system that included multiple components and individual ...
Jia Jinzhang, Wang Fengxiao, Li Jie
doaj   +1 more source

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