Author

Xiang-Yang Zhang

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Open access Aug 2026

Macroscopic load-bearing characteristics, energy evolution, and pre-splitting control of coal-rock mass under immediate hard roof

The load-bearing and damage characteristics of coal seams vary under different geological conditions. To investigate the failure characteristics of coal bodies under hard roof conditions, this study is set against the backdrop of the Zhangji Coal Mine's 11,129 work face. By employing a combination of physical exper...

Jiaxin Dang, Jian-Wei Li, Min Tu et al. · Geomechanics and Geophysics... · 0 citations

Open access Aug 2026

Fractal Characterization of Stress–Energy Response and Progressive Damage in Coal–Rock Mass Before and After Pre-Splitting Blasting of Hard Roof: From Laboratory Fragmentation to Field Fractures

Hard roof strata in deep coal mines commonly cause rib failure and roof collapse, restricting extraction efficiency. This study employs theoretical analysis, numerical simulation, and field experiments to investigate the fractal evolution of damage in coal–rock mass under loading and blasting disturbances, with the aim...

Jiaxin Dang, Jian-Wei Li, Min Tu et al. · Fractal and Fractional · 0 citations

Open access Aug 2026

Dynamic Progressive Failure and Energy-Driven Damage Evolution of Coal–Sandstone Composite Specimens Under Impact Loading: Coupling Effects of Component Ratio

Overburden rotation and mining disturbance promote deep coal fracture and spalling, potentially inducing dynamic hazards, while the coal–rock thickness ratio largely governs the composite’s dynamic response and failure severity. Based on the geological conditions of a typical deep coal mine, SHPB tests were performed o...

Jiaxin Dang, Jian-Wei Li, Min Tu et al. · Fractal and Fractional · 0 citations