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A platform for research: civil engineering, architecture and urbanism
Study on the utilization of non-mechanical ventilation power in extra-long highway tunnels with shafts
https://orcid.org/0000-0002-3964-0000
https://orcid.org/0000-0002-1593-7141
Abstract The conventional design of tunnels includes the low utilization rate of non-mechanical ventilation power, and is not suitable for the ventilation design of extra-long highway tunnels. The main purpose of this paper is to study the allowance of the non-mechanical wind pressure in each part of an extra-long highway tunnel with shafts, and to propose a tunnel ventilation method with a higher utilization rate of the non-mechanical wind pressure. Based on the ventilation network, the loop division method of a common shaft ventilation tunnel is first established, and the pressure modules in the tunnel are calculated. Then, each module is input into the ventilation network model, the non-mechanical wind pressure margin of each loop is calculated, and the distribution method of the required air volume is adjusted to ensure that the non-mechanical wind pressure margin is reasonable. Finally, according to the distribution results, the tunnel fan can be configured, and the shaft resistance can be adjusted if necessary to ensure the maximum utilization rate of non-mechanical ventilation power in the tunnel. According to the design results of the Funiushan tunnel in China, the energy-saving effect of this method is evident, which verifies its rationality.
Study on the utilization of non-mechanical ventilation power in extra-long highway tunnels with shafts
https://orcid.org/0000-0002-3964-0000
https://orcid.org/0000-0002-1593-7141
Abstract The conventional design of tunnels includes the low utilization rate of non-mechanical ventilation power, and is not suitable for the ventilation design of extra-long highway tunnels. The main purpose of this paper is to study the allowance of the non-mechanical wind pressure in each part of an extra-long highway tunnel with shafts, and to propose a tunnel ventilation method with a higher utilization rate of the non-mechanical wind pressure. Based on the ventilation network, the loop division method of a common shaft ventilation tunnel is first established, and the pressure modules in the tunnel are calculated. Then, each module is input into the ventilation network model, the non-mechanical wind pressure margin of each loop is calculated, and the distribution method of the required air volume is adjusted to ensure that the non-mechanical wind pressure margin is reasonable. Finally, according to the distribution results, the tunnel fan can be configured, and the shaft resistance can be adjusted if necessary to ensure the maximum utilization rate of non-mechanical ventilation power in the tunnel. According to the design results of the Funiushan tunnel in China, the energy-saving effect of this method is evident, which verifies its rationality.
Study on the utilization of non-mechanical ventilation power in extra-long highway tunnels with shafts
https://orcid.org/0000-0002-3964-0000
https://orcid.org/0000-0002-1593-7141
Abstract The conventional design of tunnels includes the low utilization rate of non-mechanical ventilation power, and is not suitable for the ventilation design of extra-long highway tunnels. The main purpose of this paper is to study the allowance of the non-mechanical wind pressure in each part of an extra-long highway tunnel with shafts, and to propose a tunnel ventilation method with a higher utilization rate of the non-mechanical wind pressure. Based on the ventilation network, the loop division method of a common shaft ventilation tunnel is first established, and the pressure modules in the tunnel are calculated. Then, each module is input into the ventilation network model, the non-mechanical wind pressure margin of each loop is calculated, and the distribution method of the required air volume is adjusted to ensure that the non-mechanical wind pressure margin is reasonable. Finally, according to the distribution results, the tunnel fan can be configured, and the shaft resistance can be adjusted if necessary to ensure the maximum utilization rate of non-mechanical ventilation power in the tunnel. According to the design results of the Funiushan tunnel in China, the energy-saving effect of this method is evident, which verifies its rationality.
Study on the utilization of non-mechanical ventilation power in extra-long highway tunnels with shafts
Wang, Yongdong (author) / Zheng, Rongjun (author) / Bai, Wenjun (author) / Qin, Zhenjie (author) / Chai, Lunlei (author) / Wan, Shantong (author) / Yan, Shuai (author)
2022-01-11
Article (Journal)
Electronic Resource
English
Efficiency of thermal ventilation shafts in underground tunnels
| British Library Conference Proceedings | 2000