A Classification Method for the Excavability of Small Diameter TBM Surrounding Rock Based on Rock-Breaking Specific Energy and Hierarchical Clustering

Feng Xing-yu, SHE Lei, ZHAO Yang, ZHANG Yin-bing, HAN Yong-sheng

China Rural Water and Hydropower . 2026, (4): 65 -70 . DOI: 10.12396/znsd.2500856