煤矿井下隐蔽火源反演研究

煤矿井下由于煤炭自燃引发的火灾是煤矿生产过程中一大突出灾害,一旦发生火灾将严重影响煤矿的正常生产,这不仅威胁着井下人员的生命安全,还会给国家带来巨大的经济损失。由于矿井下隐蔽火源是引发火灾的重大因素之一,所以要更好的解决煤炭自燃而引发火灾的问题,重中之重就是对煤炭自燃隐蔽火源位置的确定。只有准确的确定了火源的位置,才能有的放矢地进行灭火。本文结合煤矿井下煤炭自燃发火的特点,建立数学模型,把煤矿井下隐蔽火源位置确定问题归纳为热传导方程的寻源反问题,利用离散正则化方法求解热传导方程,克服了反演问题的不适定性,并应用matlab进行了反演数值模拟,验证了利用离散正则化反演方法的实用性,为防火、灭火采取措施提供了依据,在理论上也具有一定的研究与应用价值。

Inversion study of concealed fire in coal mine

The fires caused by coal spontaneous combustion is one of prominent disasters in coal mine underground production process.Once a fire disasters happen,it will seriously affect the normal production.It not only threatens the life safety of coal mine personnel,but also bring a huge economic losses.Because of concealed ignition is major factor to cause fire,so to better solve the fires problem caused by coal spontaneous combustion,the most important thing is determine the position of concealed fire which cause the coal spontaneous combustion.Only an accurate determination of the fire position was conducted,in can be performed to put out the fire.Combining self-ignition characteristics in underground coal mine,the mathematical model was established,the problem of determining the coal mine underground concealed fire position was inducted to the inverse problem of the heat conduction equations source,the discrete regularization method was applied to solve the heat conduction equations,which overcame the discomfort of inverse problem,and matlab was applied to inverse numerical simulation,and verified using of discrete regularization inversion method.It provides the basis for take measures to prevention and extinguishing,and it also has a certain research and application value in theory.