Study on Support Technology and Parameter Optimization for the Roof-Rib of Metal Mine Roadways


Huang Z. Q., Qin H., YILMAZ E., Cao S.

MINING METALLURGY & EXPLORATION, 2026 (SCI-Expanded, Scopus) identifier identifier

Özet

After the excavation of deep roadways, a plastic deformation zone was formed under the action of complex in-situ stress. To achieve low-cost, high-safety, and high-efficiency mine support, this study first screened candidate support mesh materials, then conducted theoretical strength calculations and numerical simulations to evaluate their mechanical performance. Static load tests were performed to validate the simulation results. Industrial field tests confirmed that optimized roadway support parameters significantly enhance performance. Notably, galvanized hexagonal woven wire mesh (GHWWM) outperforms conventional metal mesh (MM) in mechanical strength and durability. Specifically, the load-bearing capacity per unit weight of GHWWM is 1.11 times that of MM, while its maximum effective stress is increased by a factor of 1.15. Besides, the peak load and ultimate displacement of GHWWM reach 1.927 times and 1.5 times those of MM, respectively, signifying its enhanced strength, load-carrying capacity, and deformation tolerance. Both GHWWM and MM mainly exhibited combined compression-shear-tension failure. When support mesh measured 1.2 & times; 2.0 m, bolt-mesh system's extreme displacement was 3.56 mm. Based on these results, a full-section support configuration of 1.8 m bolts with 1.2 & times; 2.0 m mesh is recommended, providing a practical reference for mining operations under comparable geological and technical conditions worldwide.