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Extremely hard rock mass excavation using rock breakdown methods to assist TBM in a deep, long diversion tunnel in the Qinling Mountains https://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2022.25.035
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Extremely hard rock mass excavation using rock breakdown methods to assist TBM in a deep, long diversion tunnel in the Qinling Mountains https://jst.tsinghuajournals.com/EN/10.16511/j.cnki.qhdxxb.2022.25.035
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