Calculation of gas content in coal seam influenced by in-situ stress grads and ground temperature

摘要

On the basis of the analysis of coal-bed gas pressure in deep mine, and the coal-bed permeability (k) and the characteristic of adsorption parameter (b) changing with temperature, the author puts forward a new calculating method of gas content in coal seam influenced by in-situ stress grads and ground temperature. At the same time, the contrast of the measuring results of coal-bed gas pressure with the computing results of coal-bed gas pressure and gas content in coal seam in theory indicate that the computing method can well reflect the authenticity of gas content in coal seam, and will further perfect the computing method of gas content in coal seam in theory, and have important value in theory on analyzing gas content in coal seam and forecasting distribution law of gas content in coal seam in deep mine.