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Explosives and Explosive Ordnance Disposal
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surrounding rock stability
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stability classification of roadway surrounding rock
巷道围岩稳定性分类
根据围岩自稳能力和顶底板移近速度,将巷道分为非常稳定、稳定,中等稳定、不稳定和极不稳定 5 类
stability of surrounding rock
围岩稳定性
在无支护的条件下,巷道围岩依靠自身的强度保持相对稳定的能力
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