Research on technology of gas extraction collaborative presplitting blasting for roof cutting and pressure releasing
XUAN Xiao
ZHANG Yong
Abstract：In response to the serious deformation of exposed roadway in mining working face,taking the actual mining situation of the Ⅱ948 comprehensive caving mining face in a certain mine as the background,the stress distribution characteristics of the mining area are studied before and after roof cutting and pressure releasing in the experimental face.This study adopts the technology of presplitting blasting for roof cutting and pressure releasing,and conducts theoretical analysis and numerical simulation.Based on the research results,a presplitting blasting roof cutting plan for the experimental working face is formulated.The field test results show that carrying out presplitting blasting for roof cutting and pressure releasing on the exist gas extraction holes can significantly reduce the stress of the surrounding rock of the roadway,with deformation reduced by 30%.Therefore,in gas management and exposed roadway deformation control in mines under conditions similar to the experimental face,the relationship between gas extraction boreholes and presplitting blasting for roof cutting shall be fully considered.
Keywords：presplitting blastingroof cutting and pressure releasinggas extractioncomprehensive caving working facetunnel deformation
Publication Date：2025-03-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 33-38 )