THE STUDY ABOUT THE PRIMITIVE GAS PRESSURE IN COAL

On the basis of the elastic-plastic theory and the themodynamics theory, this paper has set up the theoretical equation between the gas pressure (P) and the depth (H),and has further probed into the distributive pattern of the primitive gas pressure in a coal seam. Then we have demonstrated the above theory by the in-situ statistic result of the primitive gas pressure in the 6th coal seam of the Yutianbao coal mine, the verified result has made clear that both the theoretical analysis and the in-situ gas pressure survey was very identical.