大型互通立交隧道火灾通风排烟组织研究
发布时间：2018-12-14 13:10
【摘要】：随着我国隧道建设长度和数量不断增加,对隧道各方面技术有了更高的要求。大型互通立交隧道的出现缓解了地面交通压力,为城市提供了更为迅捷便利的交通条件。但大型互通立交隧道不仅规模大、形势复杂而且具有较多分支,其通风设计较普通隧道更为复杂,对大型互通立交隧道通风系统的设计成为隧道安全运营必须考虑的关键问题。本文介绍了图论的基本知识以及大型互通立交隧道解算程序需要的重要矩阵；运用通风网络的理论知识并结合隧道通风的实际情况,确定了影响隧道风流状态的各压力因素如隧道沿程阻力、局部阻力、自然风压、交通通风力、射流风机升压、火灾阻力等在通风网络理论中的计算方法；建立了大型互通立交隧道通风网络解算模型,本文的主要研究成果为：(1)基于通风网络理论,编制了大型互通立交隧道通风网络解算程序,该程序可以对各种复杂立交隧道进行通风计算。(2)以深圳市一大型互通立交隧道为依托,计算了该隧道2020年、2032年行车速度分别为30km/h、40km/h、50km/h、60km/h的情况下南线和北线各段隧道分支正常运营和火灾工况下的设计需风量。(3)根据隧道正常运营和火灾工况下风流分汇情况绘制了各种情况下的通风网络图,其中正常运营包括北线、南线通风网络图,火灾情况下根据隧道火灾发生位置分为16种情况。(4)开展了自然通风与设计需风量方向同向、反向条件下,正常运营不同年限、不同车速下的风流组织研究,运用大型互通立交隧道通风网络解算程序计算获得了不同条件下的风机布置的位置和数量。火灾工况下,通过程序计算得到各个隧道分支发生火灾后,为达到通风网络风压平衡、满足通风排烟需要的射流风机配置方案。通过本文的研究,为今后大型互通立交隧道采用通风网络理论进行隧道通风设计提供了一定的依据和技术支持。
[Abstract]:With the increasing length and quantity of tunnel construction in China, there is a higher demand for tunnel technology in all aspects. The emergence of large interchange tunnels alleviates the ground traffic pressure and provides a more rapid and convenient traffic condition for the city. However, the ventilation design of large interchange tunnel is more complicated than that of common tunnel, so the design of ventilation system of large interchange tunnel must be considered as a key problem in the safe operation of tunnel. This paper introduces the basic knowledge of graph theory and the important matrix needed by the calculation program of large interchange tunnel. Based on the theoretical knowledge of ventilation network and the actual situation of tunnel ventilation, the pressure factors such as tunnel flow resistance, local resistance, natural wind pressure, traffic ventilation force and jet fan pressure are determined. The calculation method of fire resistance in ventilation network theory; The ventilation network calculation model of large interchange tunnel is established. The main research results of this paper are as follows: (1) based on the ventilation network theory, the ventilation network calculation program of large interchange tunnel is worked out. This program can be used to calculate the ventilation of various complicated interchange tunnels. (2) based on a large interchange tunnel in Shenzhen City, the speed of the tunnel in 2020 and 2032 was calculated to be 30 km / h / h ~ 40 km / h / h ~ (50 km / h) respectively. In the case of 60km/h, the design air requirement of each section of tunnel branch in normal operation and fire condition of the south and north line is given. (3) according to the ventilation network diagram of the tunnel under normal operation and fire condition, the ventilation network is drawn. The normal operation includes the ventilation network diagram of the northern line and the southern line. According to the location of the tunnel fire, there are 16 kinds of cases. (4) the natural ventilation is in the same direction with the design air volume direction, and under the reverse condition, the normal operation period is different. Based on the study of wind flow organization at different speeds, the location and quantity of fan arrangement under different conditions are calculated by using the ventilation network calculation program of large interchange tunnel. Under the condition of fire, the configuration scheme of jet fan for the ventilation network wind pressure balance and the need of ventilation and smoke exhaust can be obtained by program calculation after the fire occurred in each branch of the tunnel. Through the research of this paper, it provides certain basis and technical support for the ventilation design of large interchange tunnel by using ventilation network theory in the future.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U453.5
本文编号：2378668
[Abstract]:With the increasing length and quantity of tunnel construction in China, there is a higher demand for tunnel technology in all aspects. The emergence of large interchange tunnels alleviates the ground traffic pressure and provides a more rapid and convenient traffic condition for the city. However, the ventilation design of large interchange tunnel is more complicated than that of common tunnel, so the design of ventilation system of large interchange tunnel must be considered as a key problem in the safe operation of tunnel. This paper introduces the basic knowledge of graph theory and the important matrix needed by the calculation program of large interchange tunnel. Based on the theoretical knowledge of ventilation network and the actual situation of tunnel ventilation, the pressure factors such as tunnel flow resistance, local resistance, natural wind pressure, traffic ventilation force and jet fan pressure are determined. The calculation method of fire resistance in ventilation network theory; The ventilation network calculation model of large interchange tunnel is established. The main research results of this paper are as follows: (1) based on the ventilation network theory, the ventilation network calculation program of large interchange tunnel is worked out. This program can be used to calculate the ventilation of various complicated interchange tunnels. (2) based on a large interchange tunnel in Shenzhen City, the speed of the tunnel in 2020 and 2032 was calculated to be 30 km / h / h ~ 40 km / h / h ~ (50 km / h) respectively. In the case of 60km/h, the design air requirement of each section of tunnel branch in normal operation and fire condition of the south and north line is given. (3) according to the ventilation network diagram of the tunnel under normal operation and fire condition, the ventilation network is drawn. The normal operation includes the ventilation network diagram of the northern line and the southern line. According to the location of the tunnel fire, there are 16 kinds of cases. (4) the natural ventilation is in the same direction with the design air volume direction, and under the reverse condition, the normal operation period is different. Based on the study of wind flow organization at different speeds, the location and quantity of fan arrangement under different conditions are calculated by using the ventilation network calculation program of large interchange tunnel. Under the condition of fire, the configuration scheme of jet fan for the ventilation network wind pressure balance and the need of ventilation and smoke exhaust can be obtained by program calculation after the fire occurred in each branch of the tunnel. Through the research of this paper, it provides certain basis and technical support for the ventilation design of large interchange tunnel by using ventilation network theory in the future.
【学位授予单位】：西南交通大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U453.5
【参考文献】
相关期刊论文 前10条
1 赵迪;徐志胜;赵红莉;;不同排烟量和漏风情况下的隧道通风网络解算[J];安全与环境学报;2014年02期
2 陆秋琴;黄光球;姚玉霞;;存在风阻未知分支的大规模复杂通风网络解算方法[J];湖南科技大学学报(自然科学版);2008年03期
3 刘新;王大尉;;基于信赖域方法的矿井通风网络解算[J];辽宁工程技术大学学报(自然科学版);2008年S1期
4 刘韵;;城市地下快速道路建设动因分析[J];地下空间与工程学报;2006年S2期
5 蓝万炼;张连波;曲春梅;;城市交通可持续发展与地下快速干道[J];长沙交通学院学报;2006年03期
6 胡振瀛,刘新荣;开发城市地下快速公路需尽早起动[J];地下空间与工程学报;2005年01期
7 ;开发城市地下快速公路的必要性[J];公路运输文摘;2004年12期
8 胡金平,谢永利,李宁军,温玉辉;公路隧道通风网络中交通风的计算原理及应用[J];现代隧道技术;2004年05期
9 黄光球,陆秋琴,郑彦全;存在固定风量分支的通风网络解算新方法[J];金属矿山;2004年10期
10 胡振瀛;城市交通是否必要考虑快速地下公路网?[J];地下空间;2002年02期
相关硕士学位论文 前6条
1 尤鸿波;特长隧道自然风影响因素及计算方法研究[D];西南交通大学;2010年
2 杨涛;公路隧道火灾热释放率及通风方式研究[D];长安大学;2009年
3 周勇狄;长大公路隧道火灾数值模拟及逃生研究[D];长安大学;2006年
4 胡金平;多竖井公路隧道通风网络理论及其应用[D];长安大学;2004年
5 闫治国;长大公路隧道火灾研究[D];西南交通大学;2002年
6 王永东;长大公路隧道纵向通风数值模拟研究[D];长安大学;2000年
，本文编号：2378668
本文链接：https://www.wllwen.com/kejilunwen/daoluqiaoliang/2378668.html
