压入式通风隧道风流场及粉尘运移特性分析  

Analysis of Air Flow Field and Dust Migration Characteristics in Forced-ventilation Tunnels

作　　者：马福军[1] 陈凯旋 任杰[3] 杨少锟 Ma Fujun;Chen Kaixuan;Ren Jie;Yang Shaokun(Sinohydro Bureau 7 Co.,Ltd.,Chengdu 611730,Sichuan;PowerChina Chengdu Engineering Co.,Ltd.,Chengdu 610072,Sichuan;State Key Laboratory of Eco-hydraulics Water Conservancy Engineering in Northwest Arid Region,Xi'an University of Technology,Xi'an 710048,Shaanxi)

机构地区：[1]中国水利水电第七工程局有限公司,四川成都611730 [2]中国电建集团成都勘测设计研究院有限公司,四川成都610072 [3]西安理工大学西北旱区生态水利工程国家重点实验室,陕西西安710048

出　　处：《陕西水利》2025年第4期1-4,共4页Shaanxi Water Resources

基　　金：西安理工大学校企协同基金(252062302)。

摘　　要：根据计算流体力学方法,结合气固两相流理论,建立钻爆法产生的粉尘离散相模型。经过Fluent软件的求解计算,得到隧道三维风流场分布以及粉尘颗粒扩散运移规律。掌握不同高度平面的风速和粉尘浓度变化情况,探究不同粒径的粉尘颗粒运移特性。结果表明:回流区是运输粉尘颗粒的主要载体,涡流区会阻碍粉尘颗粒的运移。风速大小和粉尘浓度高低与所处位置的高度有关,高度越高,风速越小,粉尘浓度越低。粒径大的粉尘颗粒沉积在底部,粒径小的粉尘颗粒悬浮在空中。该离散相模型对指导工程通风方案对于保障施工人员生命安全及施工机械正常运行具有重要意义。According to the computational fluid dynamics method,combined with the gas-solid two-phase flow theory,the discrete phase model of dust generated by drilling and blasting method is established.Through the calculation of Fluent software,the three-dimensional airflow field distribution of the tunnel and the diffusion and migration law of dust particles are obtained.Master the changes of wind speed and dust concentration at different height planes,and explore the migration characteristics of dust particles with different particle sizes.The results show that the recirculation zone is the main carrier for transporting dust particles,and the eddy current zone will hinder the migration of dust particles.The wind speed and dust concentration are related to the height of the location.The higher the height,the smaller the wind speed and the lower the dust concentration.Dust particles with large particle size are deposited at the bottom,and dust particles with small particle size are suspended in the air.The discrete phase model is of great significance to guide the engineering ventilation scheme,ensure the safety of construction personnel and the normal operation of construction machinery.

关 键 词：隧道 钻爆法 计算流体力学 离散相 风流场 粉尘运移 

分 类 号：U453.5[建筑科学—桥梁与隧道工程]