采空区矿柱_顶板体系流变力学模型研究_王金安 - 久久建筑网 关键词:采矿工程;采空区;蠕变;伯格斯体;塌陷 [gap=1058]Key words:mining engineering;mined-out area;creep;Burgers body;collapse
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Ms O'Neill said Eurest's parent body, Compass, had withdrawn the burgers.
BBC: Northern Ireland
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