Pressure relief support scheme and practice of goaf roadway
Taking the ZC1102 belt mining lane in the Yadian coal mine as the engineering background,the roadway is goaf-arranged,and the roof and floor are all consisted of mudstone.Due to the influence of the mining pressure of the ZC1101 working face,the deformation of the roadway is significant.In order to control the deformation,a pressure relief support scheme for the deep goaf roadway is proposed.The scheme adopts hydraulic fracturing technology and reinforcement support of the roadway,thereby reducing the stress of the surrounding rock,maintaining its stability,reducing the maintenance,and ensuring the safe use of the roadway.By analyzing the on-site stress monitoring and roadway deformation,the results show that the pressure relief support scheme is feasible.
goaf roadwayhydraulic fracturingreinforcement supportsurrounding rock stress
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