摘要
总长7.954km的巴朗山隧道为单洞双向交通,为国内最长的单洞公路隧道。设计采用平导压入式分段纵向式通风方式。通过建立通风网络进行优化,计算出随着横通道打开条数的增多,通风能耗成一个下降趋势,当横通道全部打开时,通风能耗最少。但横通道全部打开,通风系统较为复杂,需要在各条横通道间设置风窗调节,实施及运营管理较为复杂,建议开启三条横通道送风。针对巴朗山隧道具体工况,通过建立目标函数,得出开启三条横通道的位置除了中间第五条横通道开启外,左侧开启的一条横通道在距洞口2 284 m,右侧开启的一条横通道在距洞口2 192 m处所需风机风压最小,为最节能横通道位置。
As the longest one-tube highway tunnel in China, the 7. 954 km long Balang Mountain Tunnel is a two-way traffic tunnel applying parallel-guide-pit forced section longitudinal ventilation. The computation based on ventilation network optimization shows that the ventilation energy consumption decreases as the number of opening passages increases, and the minimal value is at the moment when all the passages are open. However, for such case the ventilation system will be complex, and windshields are needed between passages, leading to complicated construction and operation, thus, it is advised to open 3 passages for ventilation. A target function is established considering the situation in Balang Mountain tunnel, and the result shows that when the fifth passage in the middle portion, the left passage 2 284 m away from the portal, as well as the right passage 2192m away from the tunnel portal are open, the fan wind pressure will be minimal, and such arrangement of passages is the most energy saving one.
出处
《地下空间与工程学报》
CSCD
北大核心
2012年第A01期1545-1549,1579,共6页
Chinese Journal of Underground Space and Engineering
基金
中央高校基本科研业务费专项资金资助(SWJTU10101B10096020
SWJTU11BR013)
国家自然科学基金资助项目(51108384)
西部交通建设科技项目(2006318000104
200831800058)
中央高校基本科研业务费专项资金资助(SWJTU10101B10096020)
西南交通大学峨眉校区基金
关键词
单洞对向超特长隧道
平导压入式分段纵向式通风
通风网络
优化研究
two-way extra-long tunnel in one tube
parallel-guide-pit forced segment longitudinal ventilation
ventilation network
optimization study
