Gao, Chao, Yufeng Huang, Qi Geng, Xiaowu Han, Huijian Zhang, Rucheng Hu, and Fei Liu. “Study on the Influence of TBM Disc Cutter on the Penetration of Extremely Hard Rock in Zijing Tunnel”. Electronic Journal of Structural Engineering 24, no. 2 (June 23, 2024): 30–37. Accessed December 3, 2024. https://ejsei.com/EJSE/article/view/626.