Research on Directional Hydraulic Fracturing Technology for Softening Rock Mass Through Faults
Based on the engineering background of passing through faults in the 2-105 working face of Dujiagou Coal Mine,this paper explores the role of hydraulic fracturing technology in softening rock masses.Based on the geological conditions of the working face,theoretical calculations are conducted to obtain the hydraulic fracturing initiation pressure and crack propagation radius,determine the drilling layout parameters,and implement drilling fracturing on site.The results indicate that hydraulic fracturing technology can promote the expansion of internal cracks in rock masses,reduce rock integrity,improve the efficiency of coal mining machine rock breaking,and shorten the time of working face passing through faults.
fully mechanized mining facepassing through faultshydraulic fracturingroof management
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