Application of Hydraulic Fracturing Initial Caving Technology in Thick Roof Fully Mechanized Mining Face
To address the problems encountered in the initial caving of thick roofs in coal mines,with Halagou Coal Mine of Guoneng Shendong Coal Group Co.,Ltd.as the engineering background,and taking into account the conditions of the roof at the working face,this article analyzes the necessity and basic principles of hydraulic fracturing caving.It designs a hydraulic fracturing roof breaking scheme and specifies the relevant parameters.The results demonstrate that after hydraulic fracturing,the roof of the working face can rapidly and layer by layer collapse,effectively controlling the occurrence of suspended roofs in the goaf,which ensures the safe production of the working face.
Hydraulic fracturingRoof cutting and pressure reliefGreen miningSuspended roof
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