Severe Deformation Mechanism of Surrounding Rock in Deep Grade Ⅵ Water-Rich Soft Rock Tunnels and Analysis of Double-Layer Primary Support Construction Process: A Case Study of Shanyang Tunnel on Dali-Ruili Railway

LU Chen, ZHANG Shuai, LIU Yanlong, LI Jieyong, LAI Yong, NIE Jianxing, LU Chunxue

Tunnel Construction . 2026, (S1): 153 -163 . DOI: 10.3973/j.issn.2096-4498.2026.S1.013