發(fā)布時間：2018-06-20 01:37

  本文選題：單洞隧道 + 聯(lián)絡(luò)通道間距　； 參考：《長安大學(xué)》2014年碩士論文

【摘要】：本文從隧道火災(zāi)中人員逃生與聯(lián)絡(luò)通道間距關(guān)系入手，總結(jié)單洞雙向交通公路隧道與雙洞單向交通公路隧道火災(zāi)時人員逃生的區(qū)別，借鑒已有對雙洞隧道火災(zāi)人員逃生的研究方法和研究結(jié)果，找出適合單洞隧道的研究方法和技術(shù)路線，針對目前國內(nèi)外學(xué)者研究的現(xiàn)狀與不足，對研究方法加以改進(jìn)，最后分析得出長大單洞公路隧道聯(lián)絡(luò)通道間距的合理推薦值。 首先，分析現(xiàn)有的幾種隧道火災(zāi)中人員逃生結(jié)果判別條件，總結(jié)其數(shù)學(xué)模型與現(xiàn)實情況的矛盾，同時對該數(shù)學(xué)模型加以修正，把修正后的數(shù)學(xué)模型作為本文判別人員逃生結(jié)果的依據(jù)。 其次，建立長大單洞公路隧道幾何模型，借助流體力學(xué)軟件PHOENICS對隧道火災(zāi)流場進(jìn)行三維數(shù)值模擬，分析隧道火災(zāi)中人員逃生路線上溫度場及煙霧場的變化規(guī)律。 再次，依據(jù)前文研究結(jié)果，建立隧道火災(zāi)中人員逃生失敗概率數(shù)學(xué)模型，使用MATLAB數(shù)學(xué)軟件進(jìn)行隨機(jī)模擬試驗，采用蒙特卡羅法計算各種工況中人員逃生失敗概率。 最后，依據(jù)風(fēng)險評估準(zhǔn)則和人員逃生失敗概率與逃生距離之間關(guān)系得到不同逃生距離對應(yīng)的風(fēng)險等級，，以逃生距離和風(fēng)險等級的一一對應(yīng)關(guān)系為判斷依據(jù)得出長大單洞公路隧道聯(lián)絡(luò)通道間距推薦值范圍。
[Abstract]:Starting from the relationship between personnel escape and the distance between contact channels in tunnel fire, this paper summarizes the difference of personnel escape in single hole two-way traffic highway tunnel and double hole one-way traffic road tunnel. Referring to the existing research methods and results of fire escape in double-hole tunnel, the research method and technical route suitable for single-hole tunnel are found out, and the research methods are improved in view of the present situation and deficiency of domestic and foreign scholars. Finally, the reasonable recommended value of the distance between the long-span single-hole highway tunnels is obtained. First of all, the paper analyzes the conditions of judging the result of escape of several kinds of tunnel fire, summarizes the contradiction between the mathematical model and the actual situation, and modifies the mathematical model at the same time. The modified mathematical model is used as the basis for judging the result of personnel escape. Secondly, the geometric model of long-span single-hole highway tunnel is established, and the three-dimensional numerical simulation of tunnel fire flow field is carried out with the help of fluid dynamics software PHOENICS, and the variation law of temperature field and smoke field on the escape route of people in tunnel fire is analyzed. Thirdly, according to the previous research results, the mathematical model of escape failure probability of tunnel fire was established, and the probability of escape failure was calculated by Monte Carlo method. Finally, according to the risk assessment criteria and the relationship between escape failure probability and escape distance, the corresponding risk levels of different escape distance are obtained. Based on the one-to-one corresponding relation between escape distance and risk grade, the range of recommended distance between long and long single tunnel is obtained.
【學(xué)位授予單位】：長安大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U459.2;U458.1

【參考文獻(xiàn)】

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本文編號：2042310