Prevention Measures and the Influence of Up-dip Mining on Rib Spalling in Complicated Geological Condition

The high yield and high efficiency of large mining height mine can not leave reasonable control and prevention of rob spalling and roof falling. Taking 1306 working face in Zhaozhuang Coal Company of Shanxi Coal Group as background, considering the complicated geological conditions, this article focuses on the influence laws of coal seam dip on rib spalling and its prevention measures during up-dip mining.