【摘要】：作為一種城市軌道交通工具,地鐵以其用地省、運(yùn)能大的特點(diǎn)在緩解城市交通壓力方面起到了重要的作用,但是隨著地鐵的陸續(xù)開(kāi)通和運(yùn)營(yíng),許多城市都出現(xiàn)了運(yùn)營(yíng)后期隧道熱環(huán)境惡化的問(wèn)題。為了保證地鐵的正常運(yùn)行,地鐵環(huán)控系統(tǒng)需要對(duì)隧道溫度進(jìn)行監(jiān)測(cè)和調(diào)控,以確保最高溫度不超出地鐵設(shè)計(jì)規(guī)范的要求。然而,怎樣實(shí)現(xiàn)對(duì)地鐵隧道溫度,尤其是對(duì)最高溫度的合理監(jiān)測(cè)是目前需要解決的問(wèn)題。本文以屏蔽門(mén)制式地鐵為研究對(duì)象,對(duì)隧道空氣溫度分布特性和隧道最高溫度的分布位置進(jìn)行了研究,從而為地鐵環(huán)控系統(tǒng)隧道溫度監(jiān)測(cè)網(wǎng)絡(luò)的建立和最高溫度的監(jiān)測(cè)提出建議。以屏蔽門(mén)地鐵為研究對(duì)象,本文建立了典型的地鐵隧道模型,并在該模型的基礎(chǔ)上,利用SES計(jì)算機(jī)程序?qū)Φ罔F隧道內(nèi)的熱環(huán)境進(jìn)行了模擬與計(jì)算。根據(jù)計(jì)算結(jié)果,總結(jié)得到屏蔽門(mén)系統(tǒng)地鐵隧道內(nèi)的空氣溫度分布基本特性和最高溫度的分布位置。地鐵隧道內(nèi)的空氣溫度受多種因素的綜合作用,本文通過(guò)改變這些因素,分別研究了軌道排熱系統(tǒng)、列車相關(guān)因素、活塞風(fēng)井配置形式與數(shù)量、區(qū)間隧道長(zhǎng)度、室外氣象條件和客流量對(duì)隧道空氣溫度分布的影響,探討了各因素改變的情況下最高溫度位置的變化規(guī)律,并由此提出對(duì)地鐵隧道最高溫度進(jìn)行監(jiān)測(cè)的方法。最后,本文模擬計(jì)算了成都地鐵18號(hào)線初期、近期和遠(yuǎn)期夏季晚高峰上、下行線隧道內(nèi)的空氣溫度分布情況,研究分析了隧道最高溫度的數(shù)值及其分布位置,并據(jù)此建立了成都地鐵18號(hào)線隧道溫度監(jiān)測(cè)系統(tǒng)方案。研究結(jié)果表明:屏蔽門(mén)系統(tǒng)地鐵隧道內(nèi)的溫度以車站軌行區(qū)及其相鄰的區(qū)間隧道為單位,呈現(xiàn)相似的分布規(guī)律;隧道最高溫度的數(shù)值主要受列車發(fā)車密度、列車最高運(yùn)行速度和軌道排熱系統(tǒng)的影響;隧道最高溫度出現(xiàn)在各站距出站端0～12m的軌行區(qū),且主要受到列車停車位置和加、減速率的影響。在對(duì)隧道進(jìn)行溫度監(jiān)測(cè)時(shí),應(yīng)在各站列車停車車頭附近、距出站端0～12m的軌行區(qū)均布置監(jiān)測(cè)點(diǎn),以獲取全線隧道最高溫度值。針對(duì)成都地鐵18號(hào)線的實(shí)際工程情況,本文建立了對(duì)應(yīng)的隧道溫度監(jiān)測(cè)系統(tǒng)方案,并對(duì)最高溫度監(jiān)測(cè)點(diǎn)的布置和傳感器的選擇進(jìn)行了闡述。
[Abstract]:As a kind of urban rail vehicle, the subway has played an important role in relieving the urban traffic pressure because of its land saving and large transportation capacity. However, with the opening and operation of the subway one after another, In many cities, the tunnel thermal environment deteriorated in the late stage of operation. In order to ensure the normal operation of the subway, the subway environmental control system needs to monitor and regulate the tunnel temperature to ensure that the maximum temperature does not exceed the requirements of the subway design code. However, how to realize the reasonable monitoring of subway tunnel temperature, especially the maximum temperature, is a problem that needs to be solved. In this paper, the characteristics of air temperature distribution and the location of the maximum temperature of the tunnel are studied by taking the shielded door subway as the research object. Therefore, some suggestions are put forward for the establishment of tunnel temperature monitoring network and the monitoring of maximum temperature in metro environmental control system. Taking the shield door subway as the research object, this paper establishes a typical subway tunnel model, and on the basis of this model, the thermal environment in the subway tunnel is simulated and calculated by using the SES computer program. Based on the calculation results, the basic characteristics of air temperature distribution and the distribution position of maximum temperature in metro tunnel with shield door system are summarized. The air temperature in the subway tunnel is affected by many factors. By changing these factors, this paper studies the rail exhaust system, train related factors, piston air well configuration and quantity, interval tunnel length, etc. The influence of outdoor meteorological conditions and passenger flow on the temperature distribution of tunnel air is discussed in this paper. The variation law of maximum temperature position under the change of various factors is discussed and the method of monitoring the maximum temperature of subway tunnel is put forward. Finally, this paper simulates and calculates the air temperature distribution in the downlink tunnel at the early, near and long term summer evening peak of Chengdu Metro Line 18, and studies and analyzes the maximum temperature value and its distribution position of the tunnel. Based on this, the temperature monitoring system of Chengdu Subway Line 18 is established. The results show that the temperature of the subway tunnel in the shield door system is similar to that of the subway tunnel in the railway station and its adjacent section. The maximum temperature of the tunnel is mainly affected by the train departure density, the maximum train speed and the track heat removal system. The maximum temperature of the tunnel appears in the rail line area of 0 ~ 12m from the exit end of each station, and is mainly affected by the train stop position and the rate of increase and subtraction. In order to obtain the maximum temperature value of the tunnel, monitoring points should be arranged in the rail line area of 0 ~ 12m away from the exit station near the front of the train stop at each station in order to obtain the maximum temperature of the tunnel in order to obtain the maximum temperature of the tunnel in order to monitor the temperature of the tunnel. In view of the actual engineering situation of Chengdu Metro Line 18, the corresponding tunnel temperature monitoring system scheme is established, and the layout of the highest temperature monitoring points and the selection of sensors are expounded.
【學(xué)位授予單位】：西南交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：U456

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