Browse

The coal samples were fractured by using high-energy solid fuel (propellants) in the lab rocket motor (LRM) adapted to investigate the impact of propellant gases pressure on rocks. The combustion of the propellant generates large quantities of gases at high pressure, which are able to produce a secondary system of fractures in the coal - potential pathways for methane migration. Values of pressure and time generated during combustion of propellants in the standard system of a laboratory rocket motor are controlled...