Matter-elements model and application for prediction of coal and gas outburst

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The theory and method of extenics were applied to establish classical field mat-ter elements and segment field matter elements for coal and gas outburst. A mat-ter-element model for prediction was established based on five matter-elements, which in-cluded gas pressure, types of coal damage, coal rigidity, initial speed of methane diffusion and in-situ stress. Each index weight was given fairly and quickly through the improved analytic hierarchy process, which need not carry on consistency checks, so accuracy of assessment can be improved.
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