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Expandable Metal Mesh: The Advantages of Flexible Support in Zimbabwe’s Polymetallic Mines

2026-06-17


The deep shafts at the Chirundu polymetallic mine are subject to high rock stresses. By combining expandable metal mesh with shape-memory alloy bolts, a dynamic cushioning support system’ has been created. This system absorbs 90% of the stress when rock strata deform, thereby preventing rock bursts. A pilot section has demonstrated a 40% improvement in support efficiency, making it suitable for deep mining operations.

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