Results 21 to 30 of about 2,727 (257)

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
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Application of Water-Plugging Grouting Material in Water-Rich Fracture Zone of Deep-Buried Tunnel

Renmin Zhujiang, 2022
Considering the water inrush disaster occurred in a deep-buried drill-and-blast tunnel passing through the water-rich fracture zone,this paper analyzes the characteristics of the water inrush disaster and the special requirements for the performance of ...
LI Xiaobing
doaj  

Identification of the karst water flow system and its application in the tunnel line selection of water diversion projects

地质科技通报, 2022
A critical water diversion project may face serious water inrush problems during tunnel construction when it crosses the carbonate rock formations of Julongshan syncline.Characteristics of karst water flow system in Julongshan syncline were identified by
Huiming Yan, Wei Chang, Xulei Guo, Zhengrong Deng, Kun Huang   +4 more
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Inversion and Analysis of the Initial Ground Stress Field of the Deep-Buried Tunnel Area

Applied Sciences, 2022
The detailed analysis of the initial ground stress distribution law is an important work for the safety of tunnel construction and operation. Especially, the high ground stress phenomenon in the deep-buried tunnel area is common, which has a great impact
Rongsen Yu, Zhongsheng Tan, Junpeng Gao, Xiuying Wang, Jinpeng Zhao   +4 more
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Experimental study on the effect of flexible joints of a deep-buried tunnel across an active fault under high in-situ stress conditions

Underground Space
During dislocation, a tunnel crossing the active fault will be damaged to varying degrees due to its permanent stratum displacement. Most previous studies did not consider the influence of the tunnel’s deep burial and the high in-situ stress, so the ...
Jiawei Zhang, Zhen Cui, Qian Sheng, Wanhua Zhao, Liang Song   +4 more
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Mechanical behaviors of surrounding rock and supporting structure of shallow-buried unsymmetrical pressure tunnel crossing soil–rock interface

Frontiers in Earth Science, 2023
Shallow bias tunnels are sensitive at the entrance section, where the existence of soil–rock interface (SRI) results in more complex deformation of surrounding rock and supporting structure.
Zhinan Hu, Ji Zhang, Yonggang Wang, Yunfei Wang   +3 more
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Stability of shallowly buried soft rock tunnel anchorage by in-situ model tests

Yantu gongcheng xuebao, 2017
To study the stability (strength characteristics, deformation laws and long-term stability) of the shallowly buried soft rock (mudstone) tunnel anchorage under heavy load, based on a Changjiang bridge tunnel anchorage project under construction, the 1:10
LI Dong-liang 1,3, LIU Xin-rong 1,3, LI Jun-jiang 1,3, WU Xiang-chao 1,2,3, LI Wei-shu 2, DU Ming-ze 4
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Monitoring and Analysis of Geotemperature during the Tunnel Construction

Energies, 2022
High geotemperatures are encountered during tunnel construction in areas with complex geological structures, which can seriously affect personnel and equipment in the process of tunnel construction and operation. The Nige tunnel, a deep-buried extra-long
Tao Wen, Zheng Hu, Yankun Wang, Zihan Zhang, Jinshan Sun   +4 more
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Stress and Displacement of Deep‐Buried Composite Lining Tunnel under Different Contact Conditions

Mathematical Problems in Engineering, 2023
Stress and displacement of the composite lining are important factors to be considered during tunnel design. By the complex variable method, analytical solutions for stress and displacement of surrounding rock, primary support and secondary lining satisfying the interface continuity and boundary conditions under far‐field stresses are derived.
Shuhong Liu, Jiajun Duan, Jinlu Fan, Yongquan Zhu   +3 more
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In-Situ Testing Technology and Its Application for External Water Pressure in Deep-Buried Tunnels Based on Directional Drilling [PDF]

长江科学院院报
[Objective] External water pressure is a critical parameter in the construction design of deep-buried tunnels. During the early investigation stage, it is difficult to obtain this parameter through traditional vertical borehole exploration.
FAN Shi-jie, WANG Zi-zhong, LI Long, CHEN Ying, YU Lei, MAI Gao-fei, WANG Bo, WANG Jun-chao
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