發(fā)布時(shí)間：2018-10-14 16:07

【摘要】：隨著我國(guó)公路隧道數(shù)量逐年增多,公路隧道運(yùn)營(yíng)安全顯得尤為重要。目前,國(guó)內(nèi)外對(duì)雙洞公路隧道火災(zāi)人員疏散研究相對(duì)較多,且人員安全判斷條件也大多采用溫度和CO固定閾值。本文基于Crane修正模型和FED死亡模型的人員傷害風(fēng)險(xiǎn)值模型,首次將溫度和CO共同傷害作用的風(fēng)險(xiǎn)模型引入長(zhǎng)大單洞雙向交通公路隧道火災(zāi)人員疏散和逃生中。論文首先引入長(zhǎng)大單洞雙向交通隧道通風(fēng)和逃生平導(dǎo)的模型,借助PHOENICS軟件對(duì)不同火災(zāi)規(guī)模、不同隧道環(huán)境風(fēng)速下隧道內(nèi)的煙霧場(chǎng)、溫度場(chǎng)進(jìn)行三維數(shù)值模擬,確定人員疏散時(shí)主隧道的控制風(fēng)速以及平導(dǎo)的控制風(fēng)速。其次,基于Crane修正模型和FED死亡模型的人員安全性判定條件,得到不同火災(zāi)規(guī)模、不同控制風(fēng)速下隧道內(nèi)各特征位置的最大可用安全時(shí)間;同時(shí),借助Pathfinder疏散軟件對(duì)火災(zāi)堵塞工況下人員疏散進(jìn)行模擬,得到人員全部疏散的必需時(shí)間,通過(guò)對(duì)疏散結(jié)果的比較以及疏散風(fēng)險(xiǎn)的分析,確定單洞雙向交通公路隧道的合理橫通道間距。最后,基于以上結(jié)果,提出單洞雙向交通公路隧道防災(zāi)救災(zāi)體系框架,并給出單洞雙向交通公路隧道防災(zāi)救災(zāi)合理化建議。
[Abstract]:With the increasing number of highway tunnels in China, the safety of highway tunnels is becoming more and more important. At present, there are more researches on evacuation of fire occupants in double-hole highway tunnel at home and abroad, and temperature and CO fixed threshold are mostly used to judge the safety of people. Based on the Crane modified model and the FED death model, this paper first introduces the risk model of temperature and CO to the evacuation and escape of fire workers in the long single-hole two-way traffic tunnel. In this paper, the model of ventilation and escape guide of long and single tunnel two-way traffic tunnel is introduced, and the three-dimensional numerical simulation of the smoke field and temperature field in the tunnel under different fire scale and different tunnel wind speed is carried out with the help of PHOENICS software. Determine the control wind speed of the main tunnel and the control wind speed of the flat guide during evacuation. Secondly, based on the Crane modified model and the FED death model, the maximum available safety time of each characteristic position in the tunnel is obtained under different fire scale and different control wind speed. With the help of Pathfinder evacuation software, the evacuation of people under the condition of fire jam is simulated, and the necessary time for all evacuation is obtained. Through the comparison of evacuation results and the analysis of evacuation risk, To determine the reasonable distance between single tunnel and two-way traffic highway tunnel. Finally, based on the above results, the framework of disaster prevention and rescue system for single-hole two-way traffic highway tunnel is put forward, and the rational suggestions for disaster prevention and relief of single-hole two-way traffic highway tunnel are given.
【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：U458

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 徐永;廖少明;李偉平;門燕青;;公路隧道火災(zāi)逃生距離及逃生風(fēng)險(xiǎn)分析[J];土木工程學(xué)報(bào);2012年12期

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本文編號(hào)：2270957