Research on Smoke Movement in Small Radius Curvilinear Tunnel Fires

摘要：

On the basis of the Ganhaizi curvilinear tunnel in the highway of Yaan to Xichang in Sichuan, threedimensional numerical model is built to simulate the smoke movement in small radius curvilinear tunnel fires, combined with the special boundary conditions of the tunnel. The distributions and variations of the smoke velocity, temperature and concentration in small radius curvilinear tunnel fires under different ventilation velocities are studied in this paper, and the minimum longitudinal ventilation velocity in the fire emergency situation is presented. The simulation results show that, the smoke spread and the temperature distribution in small radius curvilinear tunnel fires is obviously different from that in straight tunnel fires, and the minimum longitudinal ventilation velocity required to suppress the backlayering in Ganhaizi curvilinear tunnel fires is 4m/s.

关键词： curve tunnel numerical simulation fire ventilation backlayering control

作者: NI Tianxiao HE Jia XU Zhisheng

作者单位: Institute of Disaster Prevention Science & Safety Technology, Central South University, Changsha 410 Highway and Bridge Engineering Department, Hunan Communication Polytechnic College, Changsha 410004,

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 752-757

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）