Key Technology for Water Blocking and Grouting Construction in Chamber of Bottom Car Yard of Microcrack Vertical Shafts Under Extremely High Water Pressure: A Case Study of Vertical Shaft No. 1 of Gaoligongshan Tunnel on DaliRuili Railway

Key Technology for Water Blocking and Grouting Construction in Chamber of Bottom Car Yard of Microcrack Vertical Shafts Under Extremely

GAO Guangyi, ZHAI Kangbo, GU Qingtian

Tunnel Construction . 2024, (5): 1086 -1095 . DOI: 10.3973/j.issn.2096-4498.2024.05.016