隧道中的安全防護研究為通風設計、撒水設備、風速(逆煙層)、延燒現象為主要研究;長隧道中多以機械通風為主，但於短隧道則以自然通風為主則較少被討論，故本研究以結構特殊的台北捷運之類短隧道來討論自然通風，而台灣因雪山隧道發生火災而重新檢視撒水對於隧道的效能，本研究以首次應用於台灣隧道水霧系統探討其效能。
城市之短隧道一般以自然通風控制煙層,在高架捷運系統上則為了隔離噪音建置類似隧道之隔音牆,但因成本與結構之考量,對於頂上開口面積之設計一直未能有可遵循之依據。因此本研究選用較特殊的隧道形式來探討自然排煙以供未來都市淺隧道排煙可有設計建議之依循。研究使用FDS來模擬整個隔音屏障之隧道內設定不同熱釋放率和不同節數車廂發生火災的情境來觀察火災產生的煙霧層對人員撤離的影響。這項研究使用了一個1000米的整個罩式隔音牆，先進行沒有排煙口的討論，發現當熱釋放率為10,20,30和40 MW時，撤離證明是無效的。然而，在屏障頂部使用不同大小的開口的情況下，且更改不同的熱釋放率進行模擬，或對乘客和車廂的數量進行了改變，設定了所有乘客可以在這些不同情況下撤離; 研究結果導出一個應用公式,其可作為設計高架MRT系統罩式隔音牆的自然通風口時可作為參考。
台灣於2012年發生雪山隧道（12.6km）火災，其採用縱流式通風系統，上游之濃煙獲得控制，但仍有部份煙層進入下游及導坑，仍可能造成環境高溫及逃生危害。目前蘇花改公路隧道將增設水霧系統以控制環境溫度，但對於撒水效應是否可達到隧道火災救災的最佳控制,亦為本研究重要目的之一。首先設計在6 m2的油池火災中，每隔5米安裝一個側壁式水霧噴嘴，壓力為3.43bar，水流速度為360 lpm，不僅能將火焰正下方的溫度降低到30秒內低於500℃，隧道頂部溫度也降至300℃以下，熱通量降至1 kw/m2以下，阻止了隨後的火災蔓延。此外，150秒後火焰的能見度恢復到25m以上。因此若使用高壓高流速之側壁式水霧系統可以不需要關閉隧道即可以隨時維護修理，同時撒水時也可噴撒到另一側牆壁，為隧道提供足夠的壁面冷卻，可有效應用於隧道的救援和保護。

In tunnels, safety and research protection has been primarily focused towards ventilation design, water spray equipment, critical wind velocity, fire spread etc. Long tunnels mainly utilize forced ventilation, and has thoroughly studied throughout the years. This research in turn placed its focus on the less discussed acoustic barriers of the Taipei MRT (pseudo-tunnel), and used FDS simulations to discuss natural ventilation. Also, Hsuehshan tunnel, a long tunnel in Taiwan, reconsidered the effects of water spray in tunnels due to fire occurrences. This research therefore analyzed the applicability of a water spray system in a full scale tunnel fire test, which was a first in Taiwan. With personnel evacuation as the main consideration, different HRR and different sized openings in the ceiling of the acoustic barriers (pseudo tunnel) allowed for derivation of an applicable formula. In tunnels, high pressure and high flow rate side wall water spray systems allowed for easy maintenance, while the range of water spray supplied sufficient cooling of the tunnel walls to protect the tunnel structure, which showed that it can indeed be used for evacuation within and protection of tunnels.

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