Mohalik, N.K. and Mishra, Debashish and Ray, Santosh Kumar and Varma, N.K. and Khan, A.M. and Sahay, N. (2019) Laboratory Investigation to Assess Spontaneous Combustion/Fire During Extraction of Thick Coal Seam. Journal of The Institution of Engineers (India): Series D. pp. 1-14. ISSN 2250-2122 (In Press)

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Spontaneous combustion/fire and explosions occurring in the goaf area due to depillaring of thick coal seam (5–8 m) experiences significant loss to the mining industry. This ultimately causes destruction of natural resources and fatal accidents in India. Thus, it is threatening the safety of underground coal mines. This paper includes various laboratory studies to determine the cause of spontaneous combustion/fire during depillaring of panels in thick coal seams. The laboratory investigation comprises of proximate analysis, critical oxidation temperature study, differential scanning calorimetric analysis, fire ladder study, and goaf ignition temperature. The field investigation comprises of hygrometric survey to determine moisture loss and ventilation survey of the working seam to reveal that the goaf of the working panel is highly prone to spontaneous combustion/fire. The results of the above studies will help to develop suitable technique, i.e., partial stowing in goaf areas with the application of water mist spraying to prevent spontaneous combustion/fire during depillaring of thick coal seam. The above studies were carried out during depillaring panels (B2A and B2B) of a thick seam (5.4 m) at Khottadih Colliery, M/s Eastern Coalfields Limited of Raniganj coalfield of India.

Item Type: Article
Uncontrolled Keywords: Spontaneous combustion Thick coal seam Critical oxidation temperature Differential scanning calorimetric (DSC) study Fire ladder
Subjects: Mine Ventilation
Depositing User: Mr. B. R. Panduranga
Date Deposited: 30 Oct 2019 04:33
Last Modified: 30 Oct 2019 04:33

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