标题：Model test on failure and control mechanism of surrounding rocks in tunnels with super large sections
作者：Pan, Rui; Wang, Qi; Jiang, Bei; Li, Shucai
作者机构：[Pan, Rui] Anhui Jianzhu Univ, Anhui Prov Key Lab Bldg Struct & Underground Engn, Hefei 230601, Anhui, Peoples R China.; [Pan, Rui; Wang, Qi; Jiang, 更多
通讯作者：Jiang, B;Jiang, B;Jiang, B
通讯作者地址：[Jiang, B]Shandong Univ, Res Ctr Geotech & Struct Engn, Jinan 250061, Shandong, Peoples R China;[Jiang, B]China Univ Min & Technol Beijing, State Key 更多
来源：ARABIAN JOURNAL OF GEOSCIENCES
关键词：Tunnel with super large section; High strength support; Geo-mechanical; model test; Twin side heading method; Deformation and failure mechanism
摘要：This paper aims to explore the deformation and failure mechanism of surrounding rock of small spacing tunnel with super large sections. A geo-mechanical model test was carried out with the Ganggou Tunnel in China as engineering background. Tunnel excavation with and without high strength support were simulated in the experimental test. The effect of high strength support on rock displacement, stress evolution, and mechanical characteristics of support components were analyzed. Afterward, an overloading test was conducted for different overburden depths. Conclusions regarding the deformation and failure mechanism of surrounding rock are developed by comparing with and without high strength support.