Abstract: The renovation and expansion gush deep coal seam gas pressure, the sturdy coefficient of the destruction of the coal type, coal, gas diffuse initial velocity, gas adsorption coefficient, the porosity of the coal seam gas content such as testing and assessment, forecasting the The outburst

Go off-hook through the hole you want to : Chuang extended deep coal seam gas pressure, and type of the destruction of the coal, gas, and solid factor in thermal velocities, gas adsorption coefficient, coal seam gas porosity, such as content of the test and the assessment and forecast of the ore out

Abstract: Through changes the extension depth portion coal bed gas pressure, the coal destruction type, the coal firm coefficient, the gas to the hole village coal mine diffuses the initial velocity, the gas adsorption coefficient, the coal factor of porosity, the coal bed gas content and so on the

Summary: by extension of kongzhuang coal mine deep seam gas pressure coefficient of strong, destructive type of coal, coal, methane diffusion in early speed, gas porosity, adsorption coefficients, coal seam gas content testing and evaluation, prediction of deep coal seam outburst hazard in the mine,

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