Abstract: As mining in the Sanxin Gold-Copper Mine extends to deeper levels, the engineering geological conditions and orebody occurrence have worsened, with increasing in-situ stress and intensified ground pressure manifestations. This study utilized field investigation data on ground pressure phenomena, in-situ stress measurements, and laboratory-derived physical and mechanical rock parameters. Using Flac_{3 D} software for numerical simulation, the overall distribution pattern of ground pressure was analyzed. The study determined the reasonable safety distance from the orebody boundary to along-the-vein drifts in the hanging wall and footwall. It also optimized stope structural parameters and surrounding rock support methods during extraction to control issues such as roof caving and collapses, thereby preventing excessive ore dilution and rock mass displacement in both walls. A threshold for non-contact between the backfill and roof was proposed to avoid overall movement of the stope roof or backfill, which could result in surface cracking or subsidence. The research provides several conclusive recommendations for ground pressure control in deep mining, offering technical support and theoretical basis for the safe and efficient extraction of deep orebodies in the Sanxin Gold-Copper Mine.