Results 1 to 10 of about 2,442 (257)

Model test study on the mechanical response of the deep buried tunnel lining [PDF]

Scientific Reports
Deep-buried tunnels with weak surrounding rock are frequently encountered issues in traffic engineering. It plays an important role in the excavation process and the project operation.
Longyan Duan, Jimeng Feng, Jiadai Song, Shiyu Yao   +3 more
doaj   +4 more sources

Mechanical mechanism analysis of rockburst in deep-buried tunnel with high in-situ stress [PDF]

Scientific Reports
The Qinling water conveyance tunnel has a large buried depth and high in-situ stress level, and rockburst disasters frequently occurred during excavation.
Chao Zhou, Zhihong Dong, Chunhua Zhou, Ping Fu, Sheng Luo   +4 more
doaj   +4 more sources

Unloading damage evolution and rockburst risk assessment of Xuefengshan No.1 tunnel by combining multiple approaches [PDF]

Scientific Reports
Large-scale rock burst disasters often occur in high-stress and deep-buried tunnels, due to challenges in accurate forecasting and the lack of clarity regarding the underlying mechanisms largely. This study combined on-site stress drilling tests, coupled
Guo Xiang, Xiaohua Zhang, Shengnian Wang, Zhijian Wu, Xinming Pan, Dehui Xu   +5 more
doaj   +2 more sources

Optimization of the single-side drift method for shallow-buried tunnels under large eccentric pressure based on the BiDoseResp settlement model [PDF]

Scientific Reports
Taking a twin-tunnel project in Qinghai Province as a case study, this research investigates the excessive vault settlement of 14.8 cm observed at the right portal section. A three-dimensional finite element model was established to simulate the complete
Ruijie Sun, Bin Gao, Chuan Gan, Jian Zhu, Dongming Cai, Lingbing Yi   +5 more
doaj   +2 more sources

Study on construction mechanic characteristics and construction optimization of super-large cross-section tunnel portal under shallow buried depth and asymmetrical loading: A case study in Southwest China. [PDF]

PLoS ONE
The excavation of the super-large cross-section tunnel portal section is prone to causing serious engineering distresses. The key factors to ensure the safe construction of portal section are to clarify the construction mechanic characteristics and ...
Hao Chen, Haozan Zheng, Bolong Liu, Man Huang, Jiawei Liu   +4 more
doaj   +2 more sources

Study on progressive failure mode of surrounding rock of shallow buried bias tunnel considering strain-softening characteristics [PDF]

Scientific Reports
Mountain tunnels portal often have to pass through slope terrain unavoidably, thus forming a shallow buried bias tunnel. During the construction of shallow buried bias tunnel, disasters such as slope sliding and tunnel collapse frequently occur.
Xiaoxu Tian, Zhanping Song, Xiaole Shen, Qinsong Xue   +3 more
doaj   +2 more sources

Research on Stress Characteristics of Rockburst in Over-Length Deep-Buried Tunnel

Buildings
As a unique geological hazard in a high-geo-stress environment, rockburst happens with strong suddenness, randomness, and destructiveness, but the mechanism of its occurrence in a deep-buried tunnel in a high-geo-stress environment needs further study ...
Chun Luo, Shishu Zhang, Bihua Tang, Jun Chen, Chonglin Yin, Huayun Li   +5 more
doaj   +2 more sources

Analysis of Ultimate Support Pressure for Deep Buried Shield Tunnel in Sand Soil

Advances in Civil Engineering
The reasonable setting of support pressure stands as an important factor in ensuring the stability of the shield tunnel excavation face. Due to the presence of the soil arching effect, the methodology for definitively establishing the ultimate support ...
Minkang Li, Yuan Wang, Qi Dong, Sijin Liu   +3 more
doaj   +2 more sources

Analytical Elastoplastic Solutions for Deep-buried Circular Tunnels Under Asymmetric Load [PDF]

American Journal of Civil Engineering, 2021
The elastoplastic analysis of the surrounding rock of a circular tunnel is a very classic rock and soil mechanics problem. Previous scholars usually studied the situation under axisymmetric load, and they usually did not take the non-axisymmetric load distribution under the influence of ground stress and lateral pressure into account, which greatly ...
Zhang Xin, Zhang Xiangping, Wang Zhang, Lang Min, Zhao Suzhi, Du Yuxiang, Sun Jinshan   +6 more
openaire   +1 more source

Study on Deformation Characteristics of Surrounding Rock in Deep-Buried Tunnels of Plateau Railroads

Advances in Civil Engineering
Regarding the deformation problem of surrounding rock in deep-buried tunnels of high-altitude railways, this article adopted a combination of numerical simulation and in situ monitoring analysis methods relying on a new plateau railroad tunnel.
Ziguang Zhang, Meng Zhang, Yahui Wang, Lin Wei, Lei Zhang, Biao Leng, Yong He   +6 more
doaj   +2 more sources