• A novel control method combining roof cutting and confined concrete columns effectively stabilizes roadways in extremely close-distance coal seams.
• The proposed roof structure model of 'voussoir beam of upper layer + short cantilever beam of lower layer' provides a theoretical basis for stability analysis.
• Field tests demonstrate significant reduction in support stress and high-strength support in dynamic influence zones, meeting safety deformation requirements.
• The method offers effective guidance for practical application in extremely close-distance coal seams, addressing large deformation failures.