Research of inversion problem of coal mine fire hidden based on the method of regularization


ABSTRACT:

The spontaneous combustion of coal mine is one of the five natural disasters in coal mine, and the coal spontaneous combustion concealed fire location is the key to solve the problem of coal spontaneous combustion. The theory of heat transfer and fluid flow in porous media theory, combined with the actual fire location problem is reduced to the heat conduction equation of the search for the source of the inverse problem in this paper. The mathematic model was established to analyze the source point. The mine hidden fire location for inversion and numerical simulation, reduce the occurrence of coal spontaneous combustion. Firstly, according to the characteristics of mine concealed fire, attributing the problem to determine the fire location for the heat conduction equation for source identification. Secondly, we suppose fire as line fire in the ideal situation and using the discrete regularization method to mine the hidden line source inversion. The inversion results show that: this method can accurately show the characteristics of anti fire and method by solving the heat source inversion is an effective way to solve the mine concealed fire ignition characteristics of mine fire prevention and it has high research value both in theory and practice.


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