Research on Rock Deformation Rule and Stability with Chamber Mining near Coal Pocket

Shaft coal pocket mining deformation is taken as the project application background on No.8 Coal Mine of Hebi Coal Industry(Group)Co.,Ltd.,the methods of theoretical analysis,numerical simulation and field test were used to more systematically research and analyze the movement and deformation predicted theory and technology of rock.Finally,the optimal mining program were used.Measurement showed that the coal pocket and chambers were not affected after 2202 working face finished near it,which stopping 102,000 tons coal,increasing output value 51 million Yuan,to bring good economic benefit to the coal mine.