2015
DOI: 10.1007/s11069-015-1881-9
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Application of composite fly ash gel to extinguish outcrop coal fires in China

Abstract: This paper presents the application of composite fly ash gel injection technology, along with several other methods to help extinguish outcrop coal fires (excavation, blasting and sealing). The Haibaoqing coal fires extended for 6000-7000 m across *1000-m-wide area, part of which was simulated by Fluent to determine the distribution of high temperature and the situation of leakage. The radon-test method was used to accurately detect the extent of the burning area, along with the degree and tendency of burning.… Show more

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Cited by 84 publications
(30 citation statements)
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“…e spontaneous combustion of residual coal in gob as triggered by air leakage has posed major threats to the safety of miners and mine facilities [1][2][3]. Approximately 56% of mines have been threatened by spontaneous combustion in China's state-owned collieries, which account for 90-94% of Chinese coal mines [4][5][6].…”
Section: Introductionmentioning
confidence: 99%
“…e spontaneous combustion of residual coal in gob as triggered by air leakage has posed major threats to the safety of miners and mine facilities [1][2][3]. Approximately 56% of mines have been threatened by spontaneous combustion in China's state-owned collieries, which account for 90-94% of Chinese coal mines [4][5][6].…”
Section: Introductionmentioning
confidence: 99%
“…Chinese workers still use materials like wood, loess, cement grouting [11], and fly ash grouting in coal mines. Recent years have witnessed the development and application of new filling materials, including gel materials, fly ash composite colloid [12,13], paste backfilling [14], thickened mortar [15], rigid polyurethane foam [16], Marithan, and Igloneige [17]. However, all these filling materials have disadvantages.…”
Section: Introductionmentioning
confidence: 99%
“…After subsurface blasting, the composite gel is injected into the coal seam to extinguish the fire and prevent reignition. The combined method can effectively put out coalfield fire at a reasonable cost [20]. To prevent coalfield fire from occurring in the first place, some scholars have delved into the features of spontaneous combustion of coal.…”
Section: Introductionmentioning
confidence: 99%