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Stability assessment of surrounding rock in downward mining route supported by slab-wall backfill structure
Yu Yin1,2,3, Shijiao Yang1, Yan He4
1School of Resources Environment and Safety Engineering, University of South China, Hengyang, 421001, Hunan, People's Republic of China.
Abstract:
Characteristic of ground pressure in surrounding rock is generally considered as the theoretical basis of parameter optimization for stope structure and technology. To explore the feasibility of efficient method for the second-step downward route backfill stopes in Shanjin gold mine, various numerical simulation methods were used to investigate the effect of slab-wall backfill structure on stability of surrounding rock in downward route mining system. The maximum principal stress, artificial false roof stress, and displacement were analyzed to evaluate the level of ground pressure in different mining areas. These results indicate the optimized structural parameters for backfill stopes, which may also provide a low-cost way to achieve a high safety for downward route mining system.
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