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本文详细阐述了曹庄煤矿 -2 80 m井底车场六号交岔点冒顶事故发生的原因、处理过程及应吸取的经验教训
This paper elaborates the causation, treatment process and lessons to be learned of the roof fall accident at No.6 intersection of Caozhuang Coal Mine -280 m