Responses of the magnetic susceptibility and chromaticity of loess to temperature in a coal fire area

Spontaneous combustion of coal seams can produce very high temperature (generally between 600 and 850 °C, even reach to 1000 °C), which greatly changes the properties of the surface loess layer, such as its magnetic susceptibility and chromaticity. In order to study a fast, effective and nondestructive method to determine the influence range of coal seam spontaneous combustion zone, and to provide important clues for the development and...