Hydraulic Fracturing and Top Cutting Pressure Relief Technology for 90220 Working Face
A study was conducted on the problems of excessive suspended roof and severe pressure in 90220 working face of Jinpushan Coal Industry Co.,Ltd.Theoretical analysis,engineering experience,and underground testing were used to explain the technical principle of hydraulic fracturing,suitable equipment models were selected,and specific hydraulic fracturing top cutting plan was developed.Through underground test,the technical scheme can meet the demand of coal mining and has great popularization value.
hydraulic fracturingsuspended roofsurrounding rock of roadway
万方数据
维普
