硫化矿自燃过程的模拟和灾难检测

Wei Pan, Shuo Wang, Ruge Yi, Youqing Kang
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引用次数: 0

摘要

硫化矿在开采过程中的自燃会导致严重的火灾。为探究硫化矿自燃全过程中的状态转换,对硫化矿堆自燃全过程的非平稳性进行了模拟实验,并选取了最合适的小波函数,结合灾变检测等方法进行了数据挖掘和处理。结果表明,在硫化矿堆自燃的整个非稳定过程中,矿堆对环境温度变化的反应存在空间差异。靠近矿堆表面区域的反应更明显、更迅速,而靠近矿堆中心区域的反应持续时间更长。此外,在这一过程中必须至少有一个灾难点,而灾难温度必须在 108.2 ℃ 至 113.9 ℃ 之间。最后,硫化矿堆自燃的整个非稳定过程可分为四个区域。其中,区域(II)处于明显的自热/接近自燃阶段,是灾难阶段。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation and Catastrophe Detection of Spontaneous Combustion Processes in Sulfide Ores
Spontaneous combustion of sulfide ores during mining can lead to severe fires. To explore the transformation of state in the whole process of spontaneous combustion of sulfide ores, the simulation experiment of the whole unsteady process of spontaneous combustion of sulfide ore heap was carried out, and the most appropriate wavelet function was selected, combined with catastrophe detection and other methods for data mining and processing. The results indicate spatial differences in the response of the ore heap to environmental temperature changes during the whole unsteady process of spontaneous combustion of the sulfide ore heap. The reaction in the area near the surface of the heap is more prominent and faster, and the response in the area near the center of the heap is longer in duration. Moreover, there must be at least one catastrophe point in this process, and the catastrophe temperature must be between 108.2 °C and 113.9 °C. Finally, the whole unsteady process of the spontaneous combustion of the sulfide ore heap can be divided into four regions. Among them, region (II) is in a stage of obvious self-heating/near spontaneous combustion, and it is the catastrophe stage.
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