Effect of the periodic air leakage on spontaneous combustion in the gob of coal mine

Shi, Lianzeng; Gao, Ke; Liu, Yujiao; Shang, Wentian

doi:10.1016/j.csite.2024.104082

Cited by 6 publications

(1 citation statement)

References 26 publications

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“…Coal body is a kind of porous medium, and its internal pore structure is very complex. Under the influence of mining, cracks will occur in the coal body, and the cracks will connect with the pores inside the coal body, forming complex air leakage channels, resulting in spontaneous combustion of coal pillars or goaf, which brings adverse effects on roadway excavation [4]. Therefore, it is necessary to take shotcrete treatment for the 2304 upper transport tank of the mine.…”

Section: Introductionmentioning

confidence: 99%

Application of Roadway Spray Material to Fire Prevention in Goaf Excavation

Rong

2024

WJET

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In order to reduce the risk of spontaneous combustion in goaf during goaf excavation process, polymer modified cement mortar spraying material was used to spray and seal the roadway surface. The experimental application was carried out in the upper channel 2304 of a mine in Henan Province. The test results showed that polymer modified cement mortar spraying material could effectively support the roadway and greatly reduce the deformation rate of the roadway. The best spraying thickness is 5 mm. Through the monitoring of tunnel air leakage, it is concluded that the polymer modified cement mortar spraying material can reduce the tunnel air leakage and play a better sealing effect.

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Section: Introductionmentioning

confidence: 99%