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| 2022, Vol. 59(1): 200-206 DOI: | ||
| Excavation Technology of Shield Tunnels with Ultra-small Spacing in Complex Environment | ||
| (1. China Railway Tunnel Group Co., Ltd., Guangzhou 511458; 2. College of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000) | ||
| Received 2021-05-07 Revised 2021-08-20 | ||
| Supporting info | ||
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