Transformation and Upgrading of Mining Technology of Fully-mechanized Coal Mining Face through Geological Structure
The fault problems encountered in the mining process of a working face in YW Coal Mine were taken as the research object.Before the mining process of the working face was optimized,obvious problems such as difficult rock breaking and serious equipment damage appear at the working face.Combined with the actual geological conditions,the mining process of deep-hole pre-split blasting was adopted,and the composite support scheme of"deep-hole grouting+pipe shed support+anchor shed support"was put forward,in order to ensure the safety of the working face mining process.After the targeted optimization of the working face mining technology,the difficulty of rock breaking of the shearer was reduced,the mining efficiency of the working face was increased to 6 m/d,and the equipment failure rate has decreased significantly compared with the previous one,with a decrease of nearly 70% .By adopting the method of joint support to the fault area,the effective control of the deformation of the surrounding rock in the fault area was realized,and the application effect was obvious.
fully-mechanized coal mining facegeological structuremining technologytransformation and upgrading
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