Effect of flexible obstacles on gas explosion characteristic in underground coal mine

被引:56
作者
Gao, Ke [1 ,2 ,3 ]
Li, Shengnan [1 ,3 ]
Liu, Yujiao [1 ,3 ]
Jia, Jinzhang [1 ,3 ]
Wang, Xiaoqi [1 ,3 ]
机构
[1] Liaoning Tech Univ, Coll Safety Sci & Engn, Huludao 125105, Liaoning, Peoples R China
[2] Univ Technol, Ctr Built Infrastruct Res, Sch Civil & Environm Engn, Sydney, NSW 2007, Australia
[3] Minist Educ, Key Lab Mine Thermomot Disaster & Prevent, Huludao 125105, Liaoning, Peoples R China
关键词
Flexible obstacle; OpenFOAM; Gas explosion; Coal mine; FLAME;
D O I
10.1016/j.psep.2020.11.004
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Gas explosion is one of the fatal accidents in underground coal mine, threatening the lives of miners and causing significant economic losses. Gas explosion characteristics are affected by many factors, including flexible obstacles such as flexible duct systems (DS) and line brattices (LB) in the auxiliary ventilation system. In order to explore the influence of flexible obstacles in the tunnel on the propagation law of gas explosion, this study established a numerical simulation model by using OpenFOAM that is an open -source CFD source code. The process variable in XiFoam tools was used for deflagration reaction. Gas explosion simulations were carried out for analyzing the impacts of DS and LB on the evolution of flame and shock wave propagation inside the tube. The results showed that the effect of flexible obstacles on the flame propagation law was evident. The flame shape easily caused many wrinkles in the tube with flexible obstacles. Meanwhile, the maximum pressure and flame propagation speed changed obviously comparing with the empty tube. In the model of DS and LB, the maximum pressure increased by 29 % and 77.8 % than the maximum pressure of empty tube, and the maximum flame propagation speed increased by 6.8 % and 20 % than the flame propagation of empty tube, respectively. The results can provide guidance for gas explosion prevention in underground coal mine. (c) 2020 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:362 / 369
页数:8
相关论文
共 21 条
  • [1] Comprehensive consultation model for explosion risk in mine atmosphere-CCMER
    Cheng, Jianwei
    Mei, Jing
    Peng, Siyi
    Qi, Chang
    Shi, Yu
    [J]. SAFETY SCIENCE, 2019, 120 : 798 - 812
  • [2] Cunjuan Y., 2012, CHINA SAFETY SCI J, V22
  • [3] Using Large Eddy Simulation for understanding vented gas explosions in the presence of obstacles
    Di Sarli, Valeria
    Di Benedetto, Almerinda
    Russo, Gennaro
    [J]. JOURNAL OF HAZARDOUS MATERIALS, 2009, 169 (1-3) : 435 - 442
  • [4] Numerical Simulation of the Deflagration-to-Detonation Transition in Inhomogeneous Mixtures
    Ettner, Florian
    Vollmer, Klaus G.
    Sattelmayer, Thomas
    [J]. JOURNAL OF COMBUSTION, 2014, 2014
  • [5] Gao K., 2020, Safety Science, V127
  • [6] Investigation of coupled control of gas accumulation and spontaneous combustion in the goaf of coal mine
    Gao, Ke
    Qi, Zhipeng
    Jia, Jinzhang
    Li, Shengnan
    Liu, Zeyi
    Liu, Zimeng
    [J]. AIP ADVANCES, 2020, 10 (04)
  • [7] The effects of obstructions on overpressure resulting from premixed flame deflagration
    Ibrahim, SS
    Masri, AR
    [J]. JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2001, 14 (03) : 213 - 221
  • [8] Multiparameter acceleration characteristics of premixed methane/air explosion in a semi-confined pipe
    Jiang, Bingyou
    Tang, Mingyun
    Shi, Shulei
    [J]. JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2017, 49 : 139 - 144
  • [9] Premixed methane-air deflagrations in a completely adiabatic pipe and the effect of the condition of the pipe wall
    Jiang, Bingyou
    Lin, Baiquan
    Zhu, Chuanjie
    Zhai, Cheng
    Liu, Qian
    [J]. JOURNAL OF LOSS PREVENTION IN THE PROCESS INDUSTRIES, 2013, 26 (04) : 782 - 791
  • [10] Numerical simulations of the flow field ahead of an accelerating flame in an obstructed channel
    Johansen, C.
    Ciccarelli, G.
    [J]. COMBUSTION THEORY AND MODELLING, 2010, 14 (02) : 235 - 255