Research on ground behavior law of fully mechanized caving mining face in deep inclined seam of Wangjiashan Mine

In combined with the seam geology,gateway layout,coal mining technology and other certain conditions of No.44407 fully mechanized caving mining face in the deep inclined seam of Wangjiashan Mine,with the simulated material simulation experiment and finite element numerical calculation method,as well as the research on the full systematic ground behavior monitoring and measurement of the coal mining face,the top coal initial caving,the large area falling,the initial falling distance of the direct roof,the initial falling distance of the basic roof,periodical falling distance,strata pressure strength,and the related ground behavior features and laws of the fully mechanized longwall caving face in the deep inclined seam ware obtained.The paper had a research on the ground behavior features of the fully mechanized longwall caving mining face,which could provide the guidance references to the hydraulic powered support selection.