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MODERN TUNNELLING TECHNOLOGY 2019, Vol. 56 Issue (6) :11-18    DOI:
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Study on the Key Techniques for Improving Working Environment of the Extra-long Highway Tunnels in High Altitude Areas
(China Railway Southwest Research Institute Co., Ltd., Chengdu 611731; China Railway First Group Co., Ltd., Xi′an 710054)
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Abstract The extra-long Que′ershan road tunnel on the No. 317 national road has the characteristics of high alti? tude and geostress, low temperature, low atmospheric pressure and oxygen, and the working environment inside the tunnel is harsh due to low efficiency of ventilation at the initial stage of construction and the emitted hazardous gas from internal combustion engines, affecting health of the constructers and threatening the personal safety. A study on the construction ventilation, oxygen generating and supplying and the techniques for reducing hazardous gas emission from internal combustion engine is conducted. Finally the key techniques for improving the working environment of extra-long road tunnels in high altitude area are proposed.
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GAO Juru1 ZHANG Bo1 WANG Yao1 QU Haobo1 YAO Zhijun2
KeywordsTunnel in high altitude area   Extra-long road tunnel   Working environment   Construction ventilation   Oxygen supply   Exhaust purification     
Abstract: The extra-long Que′ershan road tunnel on the No. 317 national road has the characteristics of high alti? tude and geostress, low temperature, low atmospheric pressure and oxygen, and the working environment inside the tunnel is harsh due to low efficiency of ventilation at the initial stage of construction and the emitted hazardous gas from internal combustion engines, affecting health of the constructers and threatening the personal safety. A study on the construction ventilation, oxygen generating and supplying and the techniques for reducing hazardous gas emission from internal combustion engine is conducted. Finally the key techniques for improving the working environment of extra-long road tunnels in high altitude area are proposed.
KeywordsTunnel in high altitude area,   Extra-long road tunnel,   Working environment,   Construction ventilation,   Oxygen supply,   Exhaust purification     
Cite this article:   
GAO Juru1 ZHANG Bo1 WANG Yao1 QU Haobo1 YAO Zhijun2 .Study on the Key Techniques for Improving Working Environment of the Extra-long Highway Tunnels in High Altitude Areas[J]  MODERN TUNNELLING TECHNOLOGY, 2019,V56(6): 11-18
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