The theory and technology of enclosure dust-laying model in speeded advance of coal road

In order to solve the problem of the high dust concentration which caused by the speeded advance of coal road using the ABM20 development machine,a kind of method which was suitable to China's speeded advance of coal road was proposed.By using the mathematic model method to contrast the wind current field,dust field of the drivage face which using the enclosure dust-laying system under different drivage velocity,an optimized drivage velocity of the fully-mechanized development machine was got.On the optimized drivage velocity,put their theories into industry experiment.On the analysis of the data which collected by the experiment,the result indicates that the enclosure dust-laying system proposed can significantly lower the dust concentration of the heading face.Also it has some advantages in the accomplishment of the effective advance of coal mines.