Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation

LIU Zhao-chun; CHAI Jun-rui; JIA Xiao-mei; QIN lei; SUN Xu-shu

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Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation

更新时间：2026-06-25

- Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation
- Vol. 30, Issue S2, (2009)
- 作者机构：
  
  1. 西安理工大学水利水电学院,西安,710048
  2. 三峡大学土木水电学院,宜昌,443002
  3. 中国水电建设集团十五工程局有限公司,西安,710068
  4. 宝鸡市水利水电规划勘测设计院,宝鸡,721000
- 作者简介：
- 基金信息：
- DOI：
  CLC： U45
- Online First：21 June 2011，
  
  Published：2009
- 稿件说明：
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LIU Zhao-chun, CHAI Jun-rui, JIA Xiao-mei, et al. Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation[J]. 2009, 30(S2).
DOI：

LIU Zhao-chun, CHAI Jun-rui, JIA Xiao-mei, et al. Numerical simulation of concentration diffusion of harmful gas in heading face with forced ventilation[J]. 2009, 30(S2). DOI：

摘要

采用大型有限元软件ADINA的CFD模块，对压入式通风条件下掘进隧道的有害气体浓度扩散进行了三维空间数值模拟，得到了隧道内的风流结构分布，即在工作面附近存在涡流，涡流中心有害气体浓度最高。结果表明，涡流对扩散有明显的滞留作用。与理论分析相结合，得到了有害气体浓度随通风时间的变化规律，为实现隧道掘进面有效通风提供了理论基础。

Abstract

The diffusion of harmful gas is carried out by using numerical simulation of 3-D space under condition of forced ventilation

with the CFD module of ADINA

the software of large-scale finite elements. The flow framework of forced ventilation of tunnel has been obtained. Several vortexes are distributed nearby the heading face

which has great influence on diffusion of harmful gas. The concentration of harmful gas is highest in vortexes center

combining theoretical analysis

the variation discipline of the harmful gas is obtained with the ventilation time. This paper provides the criteria for effective ventilation in heading face of tunnel

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