TY - Journal of Yangtze River Scientific Research Institute A1 - SI Fu-an, LI Kun, DUAN Shi-wei T1 - Comprehensive Classification of Surrounding Rock of Deep BuriedLong Hydraulic Tunnel Constructed with Tunnel Boring Machine Y1 - 2020-08-01 JF - Journal of Yangtze River Scientific Research Institute JO - Journal of Yangtze River Scientific Research Institute SP - 150 EP - 154 VL - 37 IS - 8 UR - http://ckyyb.crsri.cn N1 - 10.11988/ckyyb.20200567 ER -