Experimental simulation study of rockburst characteristics of Sichuan–Tibet granite: A case study of the Zheduoshan tunnel

• Published in: Engineering geology Vol. 305; p. 106701
• Main Authors: Liu, Dongqiao, Ling, Kai, Guo, Changbao, He, Pengfei, He, Manchao, Sun, Jie, Yan, Xiaohai
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.08.2022
• Subjects: Acoustic emission; acoustics; case studies; deformation; Digital image correlation; digital images; granite; High geostress; railroads; Rockburst; Sichuan–Tibet railway; Δu; βt; •; u(x, y); Sichuan–Tibet railway; E; ∇; M; N; High geostress; td; M(x, y); Rockburst; t; η; Acoustic emission; v(x, y); σH, σh, and σv; Digital image correlation; M'(x’, y’); Ed

Rockburst poses a great threat to the construction safety of deep tunnels under high geostress conditions. Recently, numerous deeply buried tunnels have been constructed in China, especially in the Sichuan–Tibet railway area. In this study, two rockburst experiments (strainbursts and impact-induced...