What's Happening?
In China's western mining regions, particularly in the Ningdong and Huanglong coal bases, a new high-risk hazard involving dynamic water-sand inrush has been identified. This phenomenon occurs in deep, weakly cemented bedrock strata, posing significant threats to mining safety and environmental sustainability. The simultaneous occurrence of water-sand inrush and intense mine pressure increases the risk of catastrophic failures, leading to severe economic losses and casualties.
Why It's Important?
The identification of dynamic water-sand inrush hazards highlights the need for improved safety measures in mining operations. These events pose operational risks, including equipment loss and mine downtime, and emphasize the importance of understanding and preventing such disasters. The findings could lead to the development of new strategies for managing mining risks, potentially influencing industry practices and regulatory policies.
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What's Next?
To address these challenges, an integrated proactive prevention strategy has been proposed, including advanced techniques such as hard rock pre-splitting and grouting reinforcement. Future research will focus on analyzing the mechanical degradation of weakly cemented strata and understanding stress variations in upper hard rock. These efforts aim to develop targeted control measures to prevent dynamic water-sand inrush disasters.
