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, the scientists explain that coal pillars from multi-coal seams mining, when unstable, pose significant risks during both the production and closure stages. Their failure can exert intense dynamic pressure on lower coal seams, resulting in substantial deformation and damage to support structures and mining tunnels.
Comprehensive monitoring area and method of linkage instability of residual coal pillar and rock strata.Using fuzzy comprehensive evaluation, the researchers assessed the medium-risk level of disaster stemming from coal pillar-rock strata linkage instability in a 307-panel area during multi-seam mining. Pressure relief techniques like blasting seemed to be effective in reducing stress, and validating the accuracy of risk assessment.
In Ma’s view, it is essential to customize the application of these findings to suit the specific production and geological conditions of individual mines., China is the world’s largest coal producer, with the Shanxi province, located in the North China region, leading the way and accounting for 23% of the country’s coal reserve.
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