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- W1997466215 abstract "Fires in underground mines pose unique problems typically not encountered in other industries. The underground tunnels and entries may be lined with coal or heavily laden with wood for support providing an almost endless supply of fuel while the forced ventilation airflow provides a constant supply of oxygen to fuel the fires that occur while, at the same time, transporting smoke and toxic gases to distances far-removed from the affected fire area. Other fuels exist such as conveyor belts or liquid diesel fuel that may also contribute to the overall fire hazard if consumed as part of a spreading fire. Fires in mines may often be of spontaneous origin when coal is oxidized resulting in self-heating and a smoldering fire that is difficult to prevent and to control. To address these types of fires, Pandey et al. [1] describe the development of chemical retardants that can inhibit, if not prevent, the oxidation and subsequent self-heating of coal. Regardless of the type of fire or combustibles involved, escape-ways and means of egress are often limited placing a high burden on early detection and warning systems in order to rapidly start the evacuation and control measures when fire prevention techniques have not been successful. Understanding the characteristics of the smoke and toxic gases produced can aid in the development of better detection and monitoring systems as well as provide a better understanding of the hazards of toxicity and obscuration that mine fires produce. To aid in this understanding, Perera and Litton [2] discuss the results of experiments to define and quantify the physical and optical properties of aerosols produced from both smoldering and flaming fires from a variety of combustible mine materials. When preventive and detection measures are unsuccessful and the resultant large fires cannot be extinguished locally and burn out of control, the common technique in mines is to seal portions of the underground mine and let the fire consume the available oxygen, eventually self-extinguishing. But in underground coal mines, this practice may produce additional problems due to the liberation of methane from the coal strata and while methane/air mixtures in normal air have well-recognized flammability limits, in sealed areas with a depleting supply of oxygen, determining these limits is not often straightforward. In instances such as these, developing techniques to assess the explosibility of the sealed atmosphere becomes of paramount importance. Eventually, when sealed fires are extinguished, the sealed area needs to be recovered and ventilation restored to the affected area." @default.
- W1997466215 created "2016-06-24" @default.
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- W1997466215 date "2015-02-13" @default.
- W1997466215 modified "2023-09-27" @default.
- W1997466215 title "Guest Editorial: Fire Safety in Mines" @default.
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- W1997466215 doi "https://doi.org/10.1007/s10694-014-0447-9" @default.
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