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Maximum temperature of ceiling jet flow in longitudinal ventilated tunnel fires with various distances between fire source and cross-passage

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

Maximum temperature rise is an important parameter in tunnel fires. It is noted that classical models of maximum temperature rise in previous studies ......

Experimental and numerical study on polymer grouting pretreatment technology in void and corroded concrete pipes

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

For old pipes that have been in service for a long time in disrepair conditions, it is common to find internal and external defects in the pipelines. ......

Centrifuge and theoretical study on tunnel-raft interaction in clay

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 115 ()

Tunnelling induced ground movement may affect adjacent raft foundations. A series of centrifuge model tests was performed to investigate the settlemen......

ESPAC-based 2D mini-array microtremor method and its application in urban rail transit construction planning

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 115 ()

Conventional geophysical methods face many challenges in urban areas from limited site accessibility to severe industrial interferences. With the fast......

Mitigating rock burst hazard in deep coal mines insight from dredging concentrated stress: A case study

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 115 ()

Concentrated stress in deep coal seam is the decisive factor leading to the occurrence of rock burst, and the different stress sources cause high stre......

Behavior of precast segmental utility tunnel under ground surface Explosion: A numerical study

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 115 ()

Over the past few decades, a large number of precast segmental utility tunnels have been constructed. Intensive research efforts have been devoted to ......

Experimental study of different sealing ratios on the self-extinction of tunnel fires

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 112 ()

Firefighting in a long tunnel with large fires is quite difficult as the hot smoke and radiation prevent firefighters from approaching the fire seat. ......

Centrifuge modeling of effectiveness of protective measures on existing tunnel subjected to nearby excavation

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 112 ()

Various countermeasures are adopted to mitigate nearby excavation-induced deformations and internal forces of an existing tunnel. The effectiveness an......

Analysis on the excavation management system of slurry shield TBM in permeable sandy ground

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

Slurry shield TBMs with full-face mechanized excavation and active face support using slurry suspension are increasingly being employed for the constr......

Characteristics of driver fatigue and fatigue-relieving effect of special light belt in extra-long highway tunnel: A real-road driving study

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 114 ()

To study the characteristics of driver fatigue and effect of a special light belt to relieve driver fatigue in an extralong highway tunnel, real-road ......

Effective method for adjusting the uplifting of shield machine tunneling in upper-soft lower-hard strata

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 115 ()

The control and treatment of excessive uplifting of a shield machine during tunneling in the upper-soft lowerhard strata is challenging. This is becau......

Study on the exit-selecting behavior in underground indoor space with fire using a virtual experiment

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 112 ()

The fires in underground indoor space often result in limited field of vision, thus revealing the characteristic of exit-selecting behavior under the ......

A fly-wing smoke screen to improve the smoke exhaustion performance of a vertical shaft in road tunnel

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

A series of numerical simulations were carried out to investigate the effectiveness of a fly-wing smoke screen in improving smoke exhaustion performan......

Control and prevention of gas explosion in soft ground tunneling using slurry shield TBM

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

For biogenic gas-rich ground tunneling, control and prevention of gas explosion is an arduous task. Until now, there is still a lack of reliable techn......

A novel treatment method and construction technology of the pipeline gushing water geohazards in karst region

期刊: TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY, 2021; 113 ()

Due to the complex geological structure and abundant groundwater system in karst areas, the gushing water disasters of mines in karst areas are charac......

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