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Field Test Study of Ventilation Results in Long Highway Tunnel Using Longitudinal Ventilation Technology

Author: WangCong
Tutor: ZengYanHua
School: Southwest Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Highway Tunnel Of longitudinal ventilation jet fan Ventilation basic parameters Field survey of the traffic flow Field measurement Ventilation operation effect
CLC: U453.5
Type: Master's thesis
Year: 2007
Downloads: 256
Quote: 1
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Abstract


Of road tunnel ventilation and lighting design specifications recommended : one-way traffic tunnel longitudinal ventilation jet fan suitable length of about 2500m . Long highway tunnel longitudinal ventilation project cost, lower operating costs , phased implementation , easier technical difficulty , so more and more length exceeds specifications recommended values ??using the jet fans longitudinal ventilation . Resulting in a highway tunnel ventilation calculation , the experience of the ventilation parameter values ??or norms recommended values ??are often discrepancies engineering and ventilation effect whether the specification is not very clear . Long highway tunnel has been in operation it is necessary to conduct a comprehensive ventilation measured . This thesis is based on Chongqing Beibei Tunnel specific based on the project , the first time in the country , operating tunnels longer than 4000m above measured . Beibei Tunnel Yu- He Highway has been built on a length of 4026m of the two-lane one - way long tunnel , and its ventilation jet fan base to boost the full- longitudinal ventilation . Elaborate field test syllabus before the test , and test the Outline prepare test equipment required . The test select Beibei left line slope tunnel as a test object , using field measurement by means of Beibei Tunnel traffic flow field surveys , ventilation basic parametric test . The measured data is then analyzed with a view to verify existing traffic flow conditions using the jet fans longitudinal ventilation mode length of more than 4000m highway tunnel ventilation operating effect , In addition , the article also tunnel jet fan speed and pressure field computer numerical simulation. According to the measured data to evaluate the effect of forward design traffic flow conditions in the tunnel ventilation operations . Field measurement data and the basis for this project grew up in a highway tunnel jet the longitudinal ventilation fan design , and accumulated sum up the experience , so long highway tunnel ventilation design to rationalize economic .

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CLC: > Transportation > Road transport > Tunnel project > Tunnel buildings and equipment > Ventilation, ventilation equipment
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