To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background. Through theoretical analysis, numerical simulation, and field testing, the distribution characteristics of stress sources, deformation mechanisms of surrounding rock, and control technologies for GED in extra‐thick coal seams are systematically investigated. The results show that the gob roof forms a “stress arch–fracture arch” structure, and the surrounding rock stress originates from a “dual stress source” system. The transmission mechanism of the dual stress sources and their impact on the stability of the roadway surrounding rock are revealed. The deformation mechanism of the surrounding rock is analyzed, demonstrating that with increasing coal seam thickness, the overlying strata structure evolves from a hinged beam to a cantilever beam, intensifying the composite load and causing severe deformation of narrow 6 m coal pillar under dual stress source action. Based on these findings, a coordinated control technology combining hydraulic fracturing + shaped charge blasting + reinforced support is proposed. This method weakens the integrity of the thick hard roof and interrupts the transmission paths of the dual stress sources, achieving effective control of the dual stress source effects on roadway surrounding rock. Field applications show effective deformation control of the surrounding rock, with final coal rib and roof deformations stabilized at approximately 230 and 170 mm, respectively. The research outcomes provide a reliable theoretical basis and engineering technical support for GED with narrow coal pillars in extra‐thick coal seams.
Jiang et al. (Thu,) studied this question.