Research on Intelligent Working Face of Thin Coal Seam Passing Through Complex Geological Structural Zone
The 11503 working face of Zhaizhen Coal Mine is the first intelligent mining working face on the east wing of the 15th floor.During the promotion process,the F19 fault(123° ∠ 70°,H=15 m)is exposed on the working face,and the F16 fault(136°∠70°,H=1.8～2.8 m)is exposed on the transportation roadway.There are a series of problems such as large on-site fault drop,broken transportation roadway roof,large difficulty in anti-skid of heavy equipment,high risk of personnel safety positioning and others.Through methods of theoretical research,on-site experiments,scheme optimization and so on,reasonable roof lifting schemes,blast hole optimization schemes,transportation roadway grouting schemes,and large-scale heavy equipment anti-skid technologies,etc,are developed to achieve stable and safe efficient pushing of the working face and transportation roadway roof through the fault.The drilling construction efficiency is improved by 40%,the regular circulation is increased by 100%,and the propulsion speed is guaranteed at 1.2 m/d,solving the difficult technical problems of anti-skid and electro-hydraulic control equipment protection for heavy equipment.
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