东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (10): 1497-1501.DOI: 10.12068/j.issn.1005-3026.2014.10.029

• 资源与土木工程 • 上一篇    下一篇

基于FLUENT的大倾角综放面通风降尘系统

姚锡文1，鹿广利2，许开立1，王延瞳1   

  1. (1东北大学 资源与土木工程学院， 辽宁 沈阳110819； 2山东科技大学 资源与环境工程学院， 山东 青岛266590)
  • 收稿日期:2013-09-19 修回日期:2013-09-19 出版日期:2014-10-15 发布日期:2014-05-19
  • 通讯作者: 姚锡文
  • 作者简介:姚锡文(1987-)，男，山东五莲人，东北大学博士研究生；鹿广利(1963-)，男，河北保定人，山东科技大学教授；许开立(1965-)，男，山东郓城人，东北大学教授，博士生导师.
  • 基金资助:
    辽宁省自然科学基金资助项目(2013020137).

Ventilation Dust Removal System in High InclinationAngle Fully Mechanized Caving Face Based on FLUENT

YAO Xiwen1， LU Guangli2， XU Kaili1， WANG Yantong1   

  1. 1. School of Resources & Civil Engineering， Northeastern University， Shenyang 110819， China； 2. Resource and Environment Engineering Department， Shandong University of Science and Technology， Qingdao 266590， China.
  • Received:2013-09-19 Revised:2013-09-19 Online:2014-10-15 Published:2014-05-19
  • Contact: YAO Xiwen
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摘要： 针对大倾角综放工作面倾角大、风流运动多变导致通风系统复杂、最优排尘风速难确定等问题，基于气固两相流动理论，建立大倾角综放工作面仿真模型.通过FLUENT软件进行数值模拟，研究了不同通风方式下综放工作面风流运动规律和粉尘分布、上行通风与下行通风的降尘机理及大倾角综放工作面的最优排尘风速.结果表明:上行通风时，人行道空间的沿程粉尘质量浓度为1200~1600mg/m3；下行通风时，人行道空间的沿程粉尘质量浓度为460~600mg/m3.下行通风方式更加适用于大倾角综放工作面.最优排尘风速为25~28m/s，入口风速不宜超过30m/s.对比工作面现场实测粉尘质量浓度与数值模拟分析可知，二者结果较为一致，验证了数值模拟结果的可靠性与准确性.研究结果可为大倾角综放工作面采取有针对性的防尘措施提供理论指导.

关键词: 大倾角综放工作面, 上行通风, 下行通风, 粉尘质量浓度, 最优排尘风速

Abstract: The ventilation system of high inclinationangle fully mechanized caving face is complicated， and it is difficult to determine the optimal dust exhausting wind speed because of high inclinationangle and variable wind. In view of this fact， based on gassolid flow theory， a numerical simulation mode for high inclinationangle fully mechanized caving face was established. Via applying FLUENT software， the wind flow regularities and dust distribution， together with the reducing dust mechanism and the optimal dust exhausting wind speed， were investigated under different ventilation modes. The results showed that the dust mass concentration of ascentional ventilation in footway space ranges from 1200 to 1600mg/m3， the dust mass concentration of descentional ventilation ranges from 460 to 600mg/m3. The descentional ventilation is more applicable to the high inclinationangle fully mechanized caving face. The optimal dust exhausting wind speed is 25~28m/s， and the wind speed should be controlled below 30m/s. Experiment was performed in the working face， and the experimental results agree with the simulation results， thus verifying the reliability and accuracy of the numerical results. The research results can be used as theoretical guide for developing specifical prevention measures in high inclinationangle fully mechanized caving face.

Key words: high inclinationangle fully mechanized caving face, ascentional ventilation, descentional ventilation, dust mass concentration, optimal dust exhausting wind speed

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