The practical application of the automatic roadway formation mining technology for roof cutting and pressure relief in coal mining faces
TAI Weiwei
Abstract：In response to the stability control issues of the surrounding rock during the automatic road-way formation for the 12201 working face of roof cutting and pressure relief,a research method com-bining theoretical analysis and on-site measurement was adopted to study the cutting-top pressure re-lief parameters and the supporting technology.A bidirectional energy-concentrated tension forming blasting technology,combined with constant-resistance large-deformation anchor cables,W-shaped steel belts,single hydraulic props combined with I-beam frames,and grouted rock bolt for anchoring support were proposed.Through the optimization design of the end support and the roof mesh,a com-plete automatic tunneling process for roof cutting pressure relief was formed.This reduced the re-source waste caused by the setting of coal pillars and achieved green mining without coal pillars.
Keywords：roof cutting and pressure reliefgob-side entry retainingpresplit blastingsupport parame-tergrouted rock bolt
Publication Date：2025-06-15
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 7-12,30 )