公路分岔隧道循环风相互影响及其对策研究  

RESEARCH ON INTERRELATIONSHIP OF EXHAUST AIR OF HIGHWAY FORKED TUNNEL AND COUNTERMEASURES

作　　者：陈卫忠[1] 郭小红[2] 曹传林[3] 戴永浩[1] 伍国军[1] 谭贤君[1] 杨建平[1] 贾善坡[1] 于洪丹[1] 李飞[1] 

机构地区：[1]中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室,湖北武汉430071 [2]中交第二公路勘察设计研究院有限公司,湖北武汉430056 [3]湖北省沪蓉西高速公路建设指挥部,湖北恩施445000

出　　处：《岩石力学与工程学报》2008年第6期1137-1147,共11页Chinese Journal of Rock Mechanics and Engineering

基　　金：交通部西部交通建设科技项目;国家自然科学基金资助项目(40772184)

摘　　要：沪蓉国道主干线宜昌—恩施段地形地质条件特别复杂,其中的八字岭、庙垭和漆树槽设计成新型隧道结构型式——分岔式。分岔口循环风的相互影响将直接影响隧道的通风运行成本。重点研究双车道公路隧道在不同间距、不同风速时的循环风的影响程度。通过数值计算和回归分析提出隧道循环风相互影响与隧道进、排风速度及隧道间距的定量关系式,并提出修筑中隔墙、错开隧道出口间距等方法减小循环风相互影响的技术措施。该成果为国内其他近距离长大隧道的通风设计和隧道方案选择提供理论与试验依据。Along the highway from Yichang to Enshi city, section of the national main line from Shanghai to Chengdu, a new structural style of tunnel named forked tunnel, is put forward and successfully applied to the construction of Baziling, Miaoya and Qishucao tunnels. The emphasis is put on the influence of exhaust air on the two-lane highway tunnel＇s ventilation considering different spaces and air speeds of the two tunnels： the relation formula among intake air speed, discharge air speed and tunnel space is deduced based on a great number of numerical simulation and multivariant nonlinear regression analysis. The corresponding physical model test and field monitoring are also conducted. The technical measures, such as constructing midboard and staggering the tunnel entrance, are suggested and applied to the forked tunnel＇s design and construction in practice.

关 键 词：隧道工程 公路隧道 通风 循环风 对策 

分 类 号：U45[建筑科学—桥梁与隧道工程]