Experimental study of the burning characteristics of coal mine tapes and cables
In order to prevent fires caused by the burning of min-ing belts and cables,the article used FTT cone calorimeter to test and study their combustion characteristics and analyzed their fire hazard indicators.The combustion characteristics of the belt,cable sheath and cable insulation under 30,40 and 50 kW/m2 thermal radiation intensity were tested,and an empirical predic-tion model of heat release rate was established to study the heat release law.The results indicate that the heat release rate curve exhibits power function and exponential function patterns in the rising and falling stages,respectively.The increase in thermal ra-diation intensity accelerates the thermal decomposition of materi-als,shortens the combustion reaction process,shortens the igni-tion time,weakens the fire resistance performance,and increases the fire hazard.
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