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本文首先给出了冠山矿井筒保护煤柱的留设方案，然后介绍了用相似材料模型检验其合理性的原理，过程和结果。
In this paper, we first give a proposal for the preservation of coal pillar in Guan Shan mine shaft, and then introduce the principle, process and result of testing its rationality with similar material model.