TUNNELS

作品数：162被引量：509H指数：10
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Study on the influence factors of HST running in the tunnels at 400 km/h
《Railway Sciences》2025年第2期213-230,共18页Lei Liu Gengjie Sun Ziwei Zhang Jiaqiang Han 
Purpose–The paper aims to clarify the operation rationality of high speed trains(HSTs)under tunnel condition with the speed of 400 km/h through representative aerodynamic factors including running drag,eardrum comfor...
关键词：400 km/h high-speed railway operating condition Train-tunnel aerodynamic effects Coupling analysis Engineering optimization 
Volcanoes Rock
《China Weekly》2025年第4期60-61,共2页Mina Yan 
For a different side of tropical Hainan,journey to the center of the Earth on a trip to a magical volcano park,with lush forests,peaks and lava tunnels,When I moved to Haikou a few months ago,I didn't know much about ...
关键词：tropical island adventure volcanoes lava tunnels nature exploration tropical hainan 
An Investigation into Dust Migration Patterns in Small-Section Tunnels and Large Steep-Sloped Inclined Shafts
《Fluid Dynamics & Materials Processing》2025年第3期555-571,共17页Baoli Zang Liyang Shao Yang Li Hao Ran Liangwen Wei 
supported by the National Natural Science Foundation of China under the Youth Project(Grant No.52204087);Additional support was provided by the Science and Technology Research Program of the Chongqing Municipal Education Commission(Grant No.KJQN202200746).
This study focuses on addressing ventilation and dust removal challenges during the construction of small-section tunnels using drilling and blasting techniques.Specifically,the research examines the shale gas gatheri...
关键词：Small cross-section tunnels tunnel ventilation dust movement patterns 
Parametric design for the valve seat of a high-temperature and high-pressure valve inside wind tunnels
《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》2025年第3期266-276,共11页Fengwei HOU Haifeng SHU Binbin WU Chengliang YU Zhehui MA Wenqing LI Jinyuan QIAN 
supported by the National Natural Science Foundation of China(No.52175067);the Zhejiang Key Research&Development Project(No.2021C01021);the Natural Science Foundation of Zhejiang Province(No.LY20E050016);the Postdoctoral Fellowship Program of China Postdoctoral Science Foundation(CPSF)(No.GZC20241478)。
A high-temperature and high-pressure valve is the key equipment of a wind tunnel system;it controls the generation of high-temperature and high-pressure gas.To reduce the adverse impact of high-temperature and high-pr...
关键词：Control valve Valve seat OPTIMIZATION Parametric design 
Analysis of Reinforcement Techniques for Newly Built Tunnel Defects
《Journal of Architectural Research and Development》2025年第1期1-7,共7页Yike Wei 
Newly built tunnels often encounter a series of defects within the first few years of operation.If not promptly addressed and reinforced,these defects threaten the tunnel's durability and stability and bring severe ch...
关键词：Newly built tunnels Defect treatment and reinforcement Initial support deformation Lining cracking 
Unified elastoplastic solution for the stress and displacement of tunnel lining and surrounding rock in cold areas considering heterogeneous characteristics
《Research in Cold and Arid Regions》2024年第6期278-291,共14页Bin Wang ZiHao Zhang XiuLing Liang ChuanXin Rong HaiBing Cai 
supported by the Natural Science Foundation of Anhui Province(2408085ME147);Engineering Research Center of the Ministry of Education for Underground Mining Engineering(JYBGCZX2022103);the Key Laboratory of Building Structure and Underground Engineering of Anhui Province(KLBSUE-2023-02);the Key Laboratory of Underground Engineering and Disaster Prevention and Control of Henan Province(KFKT 2023-06);supported by National Natural Science Foundation of China(No.52378384);Natural Science Foundation of Anhui Province(No.2308085ME188).
The lining and surrounding rock around tunnels constructed in cold areas exhibit nonuniform material properties due to the existence of a temperature field.This study considered the effects of these properties on the ...
关键词：TUNNELS Cold regions Heterogeneous characteristics Elastoplastic analysis Mechanical model Strength criterion 
Optimal intensity measures for longitudinal seismic response of tunnels
《Journal of Southeast University(English Edition)》2024年第4期346-354,共9页Zhao Xu Yang Yujie Huang Jingqi Zhao Mi Cao Shengtao 
National Key Research and Development Program of China(No.2022YFC3004300);the National Natural Science Foundation of China(No.52378475).
To study the ground motion intensity measures(IMs)suitable for the design of seismic performance with a focus on longitudinal resistance in tunnel structures,21 different seismic intensity parameters are selected for ...
关键词：seismic intensity measures tunnel longitudinal direction probabilistic seismic demand model soil-tunnel interaction improved ground-beam model 
The role of polyurethane foam compressible layer in the mechanical behaviour of multi-layer yielding supports for deep soft rock tunnels
《Journal of Rock Mechanics and Geotechnical Engineering》2024年第11期4554-4569,共16页Haibo Wang Fuming Wang Chengchao Guo Lei Qin Jun Liu Tongming Qu 
supported by the National Key Research and Development Program of China (Grant No.2021YFB2600800);the National Key Research and Development 451 Program of China (Grant No.2021YFC3100803);the Guangdong Innovative and Entrepreneurial Research Team Program (Grant No.2016ZT06N340).
The polyurethane foam(PU)compressible layer is a viable solution to the problem of damage to the secondary lining in squeezing tunnels.Nevertheless,the mechanical behaviour of the multi-layer yielding supports has not...
关键词：Multi-layer yielding supports Polyurethane foam compressible layer Synergistic mechanism Large-scale model test Deep soft rock tunnels 
Dynamic performance assessment of shallow buried circular tunnels under explosion hazard
《Journal of Central South University》2024年第11期3868-3884,共17页ZHANG Chen-long ZHANG Dong-ming HUANG Zhong-kai HUANG Zhen 
Project(22dz1201202)supported by the Shanghai Science and Technology Committee Program,China;Projects(52108381,52090082)supported by the National Natural Science Foundation of China;Project(2023QNRC001)supported by the Young Elite Scientists Sponsorship Program by CAST,China;Project(TSY2022QT161)supported by the Damage Database for Urban Rail Transit Underground Structures and Resilience Evaluation Algorithm Research。
In recent years,the escalation in accidental explosions has emerged as a formidable threat to tunnel infrastructures.Therefore,it is of great significance to conduct a dynamic performance analysis of the tunnels,to im...
关键词：TUNNELS explosion hazard dynamic performance assessment parametric analysis numerical study 
Negative Poisson's ratio anchor cable support for fault tunnels with different inclination angles under earthquake
《Journal of Mountain Science》2024年第11期3814-3831,共18页YANG Xiaojie ZHANG Xiaoyu FENG Yuxiang ZHAO Yi TAO Zhigang WEN Lifan TIE Jingjing 
funded by the National Natural Science Foundation of China(Grant No.42377154).
It is inevitable to encounter fault zones in tunnel construction.These faults can lead to significant deformations and potential collapses of the surrounding rock in the tunnel.Therefore,it is crucial to study the inf...
关键词：Different dip angles Fault areas NPR anchor cable Physical model test 
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