Application of Goaf Retaining Roadway Technology in Fully Mechanized Mining Face
In order to improve the recovery rate of coal resources in the mining face,alleviate the tense situation of mining and excavation succession,and reduce the cost of tunnel excavation,the technology of top cutting pressure relief and goaf retaining roadway is applied to the 3804 fully mechanized mining face.Based on the geological conditions and roof lithology of the 3804 fully mechanized mining face,this paper designs advanced support,roof cutting blasting,and temporary support schemes for the 3804 machine roadway.After on-site application,the maximum convergence values of the top,bottom,and two sides of the reserved roadway section in the 3804 machine roadway are 242 and 283 mm,respectively.The deformation of the surrounding rock in the reserved roadway section is relatively small,which can meet the needs of adjacent mining faces.
coal miningleaving lanes along the goafsurrounding rock controlcutting top pressure reliefdeep hole blasting
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