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| 2020, Vol. 57(2): 117-126 DOI: | ||
| Study on Structural Stability of Mined Large-Span Tunnels Constructed by Two Arch-Cover Methods in Upper-Soft and Lower-Hard Rock Stratum of Qingdao Area | ||
| (China Railway Tunnel Consultants Co., Ltd. , Guangzhou 511400) | ||
| Received null Revised null | ||
| Supporting info | ||
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