Simulation and analysis of airflow stability during fire in mine belt roadway

• Published in: Journal of coal science & engineering, China Vol. 16; no. 4; pp. 375 - 380
• Main Authors: Zhang, Sheng-zhu, Cheng, Wei-min, Li, Qiu-jin, Zhang, Rui, Luo, Chuan-long
• Format: Journal Article
• Language: English
• Published: Heidelberg China Coal Society 01.12.2010
• Subjects: Earth and Environmental Science; Earth Sciences; Geochemistry; Geology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Mechanical Engineering; 下行通风; 流体动力学; 湍流模型; 火灾模拟; 矿井巷道; 稳定性分析; disaster airflow; stability; numerical simulation; belt roadway
• ISSN: 1006-9097; 1866-6566
• DOI: 10.1007/s12404-010-0408-9

According to fluid dynamics analysis during the fire, the criteria k-ε two-equation model for solving three-dimensional turbulence was determined, the pollutants generated in the fire disaster were set by adopting Mixture multiphase flow, and the SIMPLE algorithm was used for solving on the basis of comprehensive consideration on the heat radia- tion and components transmission during fire. By simulating the airflow flowing state inside the tunnel during fire disaster of downward ventilation, drift ventilation, and ascensional ventilation, respectively, with regard to the actual situation of No.l, No.3, and No.5 belt roadway in Kongzhuang Coal Mine, the velocity vector distributions of pollutants under different inlet air volumes were obtained, and the damage degree and influential factors of disaster were also clear, which is helpful to control and avoid disaster during belt roadway fire.