Mechanical-characteristic evaluation of excavation unloading rock mass subject to high-temperature conditions

• Published in: Engineering failure analysis Vol. 130; p. 105757
• Main Authors: Chen, Xingzhou, Chen, Lili, Ma, Bin, Zhang, Xu, Du, Wei, Wang, Xu, Yang, Chong
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.12.2021
• Subjects: Excavation unloading; Experimental study; High temperature effect; Highway tunnel; Unlined tunnel surrounding rock; Unlined tunnel surrounding rock; Excavation unloading; Experimental study; Highway tunnel; High temperature effect

•Effect of unloading and temperature on properties of unlined tunnel surrounding rock.•Considering the state of unlined tunnel rock undergoing excavation and then fire.•High temperature tests and reloading tests were performed on unloaded samples.•Tunnel excavation caused different stress release le...