Abstract
In order to solve the technical problems of coal spontaneous combustion and fire prevention in goaf, gel fire prevention materials in coal mine have been developed. This study introduces an innovative gel-based fire extinguishing material, formulated by integrating two distinct substances, to effectively mitigate the issue of spontaneous coal combustion. Systematic variations in the material compositions and concentrations were employed to observe changes in gelation dynamics, including gelation time and efficacy. Additionally, key technical parameters, notably the rate of dehydration, were meticulously quantified. The findings indicate a significant dependency of gel formation time and dehydration rate on the specific ratios and concentrations of the constituent materials. Optimal gelation performance necessitates precise calibration of these variables. This investigation holds substantial importance in advancing the technology of gel-based fire extinguishing systems for mining applications. The optimum ratio of the two base materials is 5:1, and the optimum concentration is 80%–95% according to 1:1 or 1:2 dilution ratio.
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