A gradient weighted extended finite element method (GW-XFEM) for fracture mechanics

Feng, Shizhe; Bordas, Stéphane P.A.; Han, Xu; Wang, G; Li, Zhixiong

doi:10.1007/s00707-019-02386-y

Cited by 20 publications

(1 citation statement)

References 35 publications

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“…e application of coal mining machinery in mining areas is more and more extensive [2,3]. Although relevant mechanics research has been carried out [4], the intensity of coal mining has increased, and the amount of dust generated in coal mining face has increased. In semiclosed or closed spaces, coal dust tends to form dust clouds which, once exposed to ignition sources (electric sparks, open flames, or high-temperature heat sources), would explode and produce destructive shock waves which would raise the surrounding deposited coal dust and trigger a secondary explosion.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Meng

Zhang

et al. 2019

Shock and Vibration

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is 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. A G-G furnace, a Hartmann tube, and a 20 L explosion tank are used to test MIT, MIE, P max , (dp/dt) max , and other parameters of three different ranks of coal dust. SEM analysis is carried out on the coal dust before and after explosion to compare and trace their microstructure changes. e results indicate that the lower the rank of the coal, the more likely the dust cloud to be ignited, the faster the explosion flame propagated, and the greater the explosion severity. e main drivers behind the ignition sensitivity and explosion severity differences among different ranks of coal dust are the volatile content and pyrolytic property of the coal.

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Section: Introductionmentioning

confidence: 99%