Research on rock burst prevention technology of gob-side entry retaining by roof cutting in kilometer-deep coal mines
YU Huan
SHI Xianfeng
WANG Bingkun
ZONG Linlin
ZHAO Jichun
Abstract：To mitigate rock burst hazards in kilometer-deep coal mines,a comparative analysis was conducted between the conventional coal pillar method and the Gob-side Entry Retaining by Roof Cutting(GERRC)technique.The rock burst prevention mechanism of GERRC was elucidated,which operates through three pri-mary aspects:reduction of static load,attenuation of dynamic load,and elimination of potential shock-prone rock masses.Taking the No.103 workface of the 3#lower coal seam at a burial depth of 1,000-1,063m in a representative mine as the engineering background,key technical parameters were systematically designed and optimized.These parameters included pre-splitting blasting of the immediate roof,reinforced support for the roof and ribs,temporary roadway support,and specifications for the gangue-retention and sealing system.The design was implemented on siteand field monitoring demonstrated that the optimized GERRC method effectively controlled strata movement,minimized roof separation,and maintained the integrity of deep roof strata.In com-parison with the conventional gob-side entry driving approach that utilizes 5-m protective coal pillars,the GERRC technique significantly reduced both the risk level and spatial extent of rock burst-prone zones.The results confirm the feasibility of applying the roof cutting and pressure relief method for rock burst prevention in deep coal mines.
Keywords：kilometer-deep minesgob-side entry retaining by roof cutting and pressure reliefrockburst pre-ventioncritical operational parametersfield monitoring
Publication Date：2026-02-28
Online Publishing Date：2026-03-12(First online date of this platform, not the publication date of the document)
Pages：8( 205-212 )