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MODERN TUNNELLING TECHNOLOGY 2015, Vol. 52 Issue (2) :180-185    DOI:
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Key Techniques for the Diffused Oxygen Supply of an Extra-Long Highway Tunnel in a High-Altitude Area
1 Key Laboratory of Transportation Tunnel Engineering, Ministry of Education, Southwest Jiaotong University 2 Department of Civil Engineering, Southwest Jiaotong University-E'mei Branch Campus
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Abstract Based on the construction of the Balangshan tunnel with an altitude of 3 800 m and a length of 8 km, a field test regarding the diffused oxygen supply was carried out for the first time, obtaining variation patterns of subjects' physiological symptoms, such as heart rate and blood oxygen concentration, as well as the oxygen concentration inside the tunnel. It was determined that the diffused oxygen supply, having obvious positive effects on the oxygen concentration and human body function in the tunnel, is a sound method for the construction of tunnels in high-altitude areas, and it is recommended for application in the Balangshan tunnel.
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Keywords： EXtra-long highway tunnel in high-altitude area     Oxygen supply during construction     Diffused oxygen supply     Field test     
Abstract： Based on the construction of the Balangshan tunnel with an altitude of 3 800 m and a length of 8 km, a field test regarding the diffused oxygen supply was carried out for the first time, obtaining variation patterns of subjects' physiological symptoms, such as heart rate and blood oxygen concentration, as well as the oxygen concentration inside the tunnel. It was determined that the diffused oxygen supply, having obvious positive effects on the oxygen concentration and human body function in the tunnel, is a sound method for the construction of tunnels in high-altitude areas, and it is recommended for application in the Balangshan tunnel.
Keywords： EXtra-long highway tunnel in high-altitude area  ,   Oxygen supply during construction  ,   Diffused oxygen supply  ,   Field test     
Cite this article:   
.Key Techniques for the Diffused Oxygen Supply of an Extra-Long Highway Tunnel in a High-Altitude Area[J]  MODERN TUNNELLING TECHNOLOGY, 2015,V52(2): 180-185
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