摘要
为探明斜井通风的流场及粉尘扩散分布特征,以昭泸高速公路坪上隧道为工程背景,采用流体力学软件Fluent建立了斜井通风的三维数值模型,研究了隧道内的通风流场以及隧道爆破过程中产生的粉尘在隧道内的分布情况,并采用正交试验法,确定了适用于现场的最优风筒布置方案,即风筒悬挂位置在中线外侧拱腰,风筒距离掌子面20 m左右,风速为23.54 m/s。
In order to find out the flow field and dust diffusion distribution characteristics of inclined shaft ventilation,this paper takes the Pingshang tunnel of Zhaolu Expressway as the engineering background,and uses the fluid mechanics software Fluent to establish a three-dimensional numerical model of inclined shaft ventilation,and studies the ventilation flow in the tunnel.Field and the distribution of dust generated during tunnel blasting in the tunnel,and the orthogonal test method is used to determine the optimal air duct layout scheme suitable for the site.The optimal ventilation arrangement scheme obtained by calculation is that the hanging position of the air duct is at the outer arch waist of the midline,the air duct is about 20 m away from the face of the palm,and the wind speed is 23.54 m/s.
作者
邓海明
唐侃
张寒韬
向恩宣
黄志刚
常亮
Deng Hai-ming;Tang Kan;Zhang Han-tao;Xiang En-xuan;Huang Zhi-gang;Chang Liang
出处
《建筑技术开发》
2022年第21期125-129,共5页
Building Technology Development
基金
云南省交通运输厅科技创新及示范项目(云交科教便[2020]53)。
关键词
特长隧道
斜井通风
粉尘扩散
正交试验
风筒优化
extra-long tunnel
inclined shaft ventilation
dust diffusion
orthogonal test
air duct optimization
