Difficult Production Problems and Management and Control of the"Three Soft"Coal Seam Large Inclination Angle Fully Mechanized Caving Face
In Wangjiashan Coal Mine of Jingmei Company,the large inclination angle extra thick coal seam horizontal-circular arc transition fully mechanized caving face is aimed at addressing the problems in production management,such as fast deformation of the roadway within the two advanced support ranges,upward and downward movement of the working face equipment,difficulty in adding hydraulic supports,and frequent equipment impact,etc,an engineering practice method is adopted.Detection of top and bottom coal in the working face and drawing of a ten day survey profile map of the working face are conducted in advance,timely checking and acceptance and adjustment of engineering quality issues in the working face,control of hydraulic support and prevention of forward and backward sliding up and down and chain breakage,implementation of anti flying gangue measures,management of upper and lower ends and corners,and a series of control and management measures effectively control various prominent problems in the production process of the large inclination angle fully mechanized caving face,and achieve safe and efficient stoping of the large inclination angle fully mechanized caving face in Wangjiashan Coal Mine.
large inclination angle extra thick coal seam horizontalcircular arc transition fully mechanized caving facequality management
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