Mechanics Principle and Implementation Technology of Surrounding Rock Pressure Release in Gob-Side Entry Retaining by Roof Cutting

Improving coal resource mining rates has long been a focus of industry research. The gob-side entry retaining by roof cutting (GERRC) is new technology that gained popularity in China due to its high rate and safety. Based on the GERRC technology, precise technical procedure elaborated, fundamental idea pressure relief explored through creating structural mechanics model surrounding rock this paper. results mechanical analysis show primary mechanism release weaken integrity roof, thereby reducing ultimate bending moment stratum. In addition, an additional strategy for suggested research, involving weakening creation dense pressure-released holes. engineering field experimentation demonstrate holes can completely replace conventional blasting past achieve effect releasing pressure, thus avoiding use hazardous challenging-to-obtain explosives demonstrating safety, reliability, feasibility.