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| 2020, Vol. 57(6): 214-218 DOI: | ||
| Application of T76S Self-drilling and Grouting Spiral Pipe-roof in Tunnel Collapse Treatment and Evaluation on Support Effect | ||
| (1 Poly Changda Engineering Co., Ltd., Guangzhou 510620; 2 Beijing Jiaotong University, Beijing 100044) | ||
| Received null Revised null | ||
| Supporting info | ||
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