2021
DOI: 10.1088/1755-1315/632/2/022075
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Technologies on Safe Construction Ventilation of Long-large Shield Tunnel with Low Gas in Metro

Abstract: Taking the project of long-large shield tunnel with low gas in Xingtian section of Chengdu Metro Line 18 as an example, A new construction ventilation method is established, which includes: the main tunnel ventilation with axial fans installed at the entrance of the tunnel and the local ventilation with jet fans installed in the shield and at the upper part of the bridge and the top of the 4# trailer for the rear supporting system; the connecting passage ventilation with a jet fan installed on the wall; the cr… Show more

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“…With the continuous improvement of the urban transportation system, rail transportation planning and construction have become an important part of the metropolitan transportation system [1]. The shield method has become one of the main methods of urban underground rail transit construction due to its unique advantages [2]. The construction technology of shield tunneling through existing infrastructure has also become a key control object in engineering construction [3].…”
Section: Introductionmentioning
confidence: 99%
“…With the continuous improvement of the urban transportation system, rail transportation planning and construction have become an important part of the metropolitan transportation system [1]. The shield method has become one of the main methods of urban underground rail transit construction due to its unique advantages [2]. The construction technology of shield tunneling through existing infrastructure has also become a key control object in engineering construction [3].…”
Section: Introductionmentioning
confidence: 99%