1. Li WT, Yang N, Yang B, et al. An improved numerical simulation approach for supporting arch-bolt supported tunnels with large deformation. Tunn Under grSp Tech 77:1–12.
2. LIU Guolei. Research on steel tube confined concrete supports capability and soft rock roadway compression ring strengthening supporting theory D Beijing: China University of Mining and Technology,2013 (in Chinese).
3. CHEN Quan-jian, YANG Shao-kun, ZHOU Wei-dong. Research on experiment about applying new type of concrete-filled steel tube stand into soft rock tunnel reinforcement. J Henan Polytech Univers (NAT SCI), 2014,33(5):582-589.
4. He Xiaosheng, Liu Keming, Zhang Lei,et al. Structural design and application of concrete-filled steel tube support at extremely soft rock roadway intersection J China Coal Soc 40(9):2040-2048.
5. Practical inferences from research on the design of tunnel support;Fairhurst;Underground Space,1980