Rapid Measuring Method and Device of Working Face Residual Gas Parameters

Concerning on the problems of poor reliability and long measurement cycle of residual gas parameters, a new method of rapidly determining residual gas parameters is proposed. The amount and pressure of the residual gas at different measuring points can be calculated accurately by determining gas desorption quantity before and after the smashed coal sample and combining with laboratory pre-fitted different equilibrium pressure of coal adsorption of methane and desorption volume and methane content curve equation.