Research and Application of Small-angle Oblique Adjustment Technology of Fully-mechanized Caving Face
Aiming at the triangle coal remaining near the stop-mining line of 2201 fully-mechanized caving face of Heilong Coal Industry Co.,Ltd.,in order to maximize the recovery of coal resources near the stop-mining line,a theoretical analysis was conducted based on on-site research and the properties of the surrounding rock of 2201 fully-mechanized caving face,and the technical characteristics of oblique adjustment with real center and oblique adjustment with virtual center were discussed.Based on the actual engineering conditions of 2201 fully-mechanized caving face,the oblique adjustment with virtual center was finally determined to be used,and the safety mining guarantee technology for the working face was proposed.On site industrial tests have shown that the use of oblique adjustment and safe mining techniques has resulted in the extraction of 2.65×104 t of coal resources,achieving significant economic and social benefits.
triangular coaloblique adjustment of working facereal centervirtual center
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