为了扼制该类火灾的发生，煤自燃火灾指标气体的早期预测预报功能越来越受到人们的重视。

For the control of such fire, more and more attention has been paid to the early prediction and forecasting function of fire indication gases.

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正确预测开采煤层自燃发火的趋势与危险性，对煤矿安全生产具有重要的指导意义。

Accurate prediction of the tendency of spontaneous combustion risk in mining coal layers is of great importance in production safety of coal mine.

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因此，研究硫化矿自热过程是研究硫化矿自燃早期预测预报方法的前提。

So studying the self-heating process of sulfide ore pile is a precondition to develop the forecasting method of the spontaneous combustion of sulfide ore at the early stage.

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