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Subject: yielding pillars mining. In Mine 2, the majority of the pillars are yielding pillars, rather than the stiff pillars used in Mine 4. Although yielding pillars may allow a higher extraction ratio than stiff pillars because of the narrower pillars, it also creates fissures in the roof.
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| yielding = flexible |
| нашел - податливые и жесткие целики. Или гибкие? |
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stiff = жесткие yielding = гибкие |
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Однозначно "податливый целик" stress control yield pillar податливый целик, снижающий концентрацию напряжений |
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