title: Application of Foam-gel Technique to Control CO Exposure Generated During Spontaneous Combustion of Coal in Coal Mines.
abstract: In China, 47.3% of state-owned coal mines are located in coal seams that are prone to spontaneous combustion. The spontaneous combustion of coal is the main cause of the generation of a large amount of carbon monoxide, which can cause serious health issues to miners. A new technique using foam-gel formation was developed to effectively control the spontaneous combustion of coal. The gel can capture more than 90% of the water in the grout and at the same time the foam can cover dangerous areas in the goaf by stacking and cooling of foam in all directions. In this study, a mechanism of foam-gel formation was introduced and the optimal proportions of additives were defined based on experiments of different foaming properties, gelling time and water loss rate as the main index parameters. The results of a field application in a coal mine promise that this new technique would effectively prevent coal oxidation in the goaf and reduce the generation of carbon monoxide.
authors.affiliation: a Faculty of Safety Engineering, China University of Mining & Technology , Xuzhou , China.
authors.forename: Xing W
authors.initials: XW
authors.lastname: Ren
authors.affiliation: a Faculty of Safety Engineering, China University of Mining & Technology , Xuzhou , China.
authors.forename: Feng Z
authors.initials: FZ
authors.lastname: Wang
authors.affiliation: a Faculty of Safety Engineering, China University of Mining & Technology , Xuzhou , China.
authors.forename: Qing
authors.initials: Q
authors.lastname: Guo
authors.affiliation: a Faculty of Safety Engineering, China University of Mining & Technology , Xuzhou , China.
authors.forename: Zhao B
authors.initials: ZB
authors.lastname: Zuo
authors.affiliation: b Faculty of Mining Engineering, China University of Mining & Technology , Xuzhou , China.
authors.forename: Qi S
authors.initials: QS
authors.lastname: Fang
mesh_terms: D002248:Carbon Monoxide; D002681:China; D003031:Coal; D003032:Coal Mining / Q000379:methods*; D016273:Occupational Exposure / Q000517:prevention & control*; D010084:Oxidation-Reduction; D018605:Spontaneous Combustion
chemical_list: D003031:Coal; D002248:Carbon Monoxide
keywords: carbon monoxide; coal mines; foam-gel; spontaneous combustion of coal