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.
关键词
水力压裂/悬顶/巷道围岩
Key words
hydraulic fracturing/suspended roof/surrounding rock of roadway
维普
万方数据