About Lüliang Tunnel pneumatic
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6 FAQs about [Lüliang Tunnel pneumatic]
What is Lüliangshan Tunnel?
Lüliangshan Tunnel ( Chinese: ; pinyin: Lǚliáng Shān Suìdào; lit. 'Lüliang Mountain Tunnel') is built to allow the Taiyuan–Zhongwei–Yinchuan railway to cross the Lüliang Mountains. The tunnel is located between Wucheng (a town in Lüliang City) and Fenyang in Shanxi province. It is a dual bores, double track rail tunnel.
How do tunnel construction problems relate to the ventilation outlet?
Zhang, Sun, Lin, and Wang (2017) evaluated tunnel construction problems related to the shaft being used as the ventilation outlet. They also determined the optimal position of the fan in the tunnel through numerical simulation to accomplish the rapid discharge of CO and other contaminants.
Can a jet fan improve tunnel ventilation?
In this study, we simulated the flow and concentration distributions of air and CO in a tunnel during construction under two common ventilation methods: forced ventilation and air extraction. Based on the simulation results, we then proposed adding a jet fan for improved tunnel ventilation.
What is the air current model in tunnel ventilation?
Air is the principal medium in tunnel ventilation; thus, the movement of air currents during ventilation is emphasized. The air current model based on the Navier–Stokes equation is applied to the ventilation simulations, assuming 3D isothermal and incompressible Newtonian flow.
How is The Lianghekou hydropower station traffic engineering tunnel used?
The traffic engineering tunnels of the Lianghekou Hydropower Station are used as a reference for the numerical simulations to simulate both forced ventilation and air extraction during tunnel construction. The Lianghekou tunnel is currently being excavated by deep-hole full-section blasting.
How is Lianghekou tunnel excavated?
The Lianghekou tunnel is currently being excavated by deep-hole full-section blasting. The litho logy of the tunnel is silty shale slate and metamorphic sandstone. Because the organic matter content is not high, the potential for the release of harmful gases such as CH 4 is low.