Experimental research of the influence of static electric field on the characteristics of coal gas emission
Abstract：Under the action of the electrostatic field, the mechanisms of causation and diffuse properties of coal contained gas were studied. The results show that the methane diffusion process between 45 and 60 s is the main effect of the electrostatic field. The initial speed of methane diffusion goes up as voltage rise, and reaches a maximum in a certain voltage, then approaches the gentle by gradually. The value of the initial speed of methane diffusion（△p） is pres- ented the tendency of increase in fluctuated up and down by the certain accumulative voltage. It can not drop back to initial value when closes electrostatic field. This memory effect maintaines a certain amount of time, may be due to the electrostatic field which makes coal plastic damage to happen. The cause of the phenomenon and mechanism is the change and competing between adsorption potential and electronegativity.
Keywords：electrostatic fieldinitial speed of methane diffusiontime memory effectsplastic damage
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 962-966 )