煤矿安全2019，Vol.50Issue(9)：174-178,5.DOI:10.13347/j.cnki.mkaq.2019.09.043
压入式通风条件下浅埋煤层工作面采空区漏风规律研究
Study on Air Leakage Law in Gob of Shallow Buried Coal Seam Under Forced Ventilation
李鹏 1戴广龙 2叶庆树 1唐明云 2聂士斌 2宋小林3
作者信息
- 1. 神东煤炭集团有限责任公司,内蒙古 鄂尔多斯 017000
- 2. 安徽理工大学 能源与安全学院,安徽 淮南 232001
- 3. 中国矿业大学 安全工程学院,江苏 徐州 221116
- 折叠
摘要
Abstract
The 12206 working face of Huojitu Coal Mine was taken as the research object. Combining the distribution of"vertical three-zones"in gob with the "O"type caving compaction in the gob and the nonlinear seepage theory, a three-dimensional distribution model of the permeability in the gob was established. The Fluent, a CFD (Computational Fluid Dynamics)software, was used to simulate the air leakage law from working face to the gob. The result indicates that the energy of the working face is larger than the surface in shallow buried coal seam with forced ventilation, and so the air of the working surface leaks to the surface through the gob. And the distribution of the air leakage flow field in the gob is similar to the shape of "O"in the horizontal direction and is similar to the shape "bathtub"in the vertical direction. The influence of energy difference between the working face and surface on air leakage in gob is simulated. The results show that the higher the energy difference between the working face and surface, the greater the air leakage volume between the gob and surface, and the relationship between energy difference and air leakage volume is exponential function.关键词
三维渗透率模型/地表漏风/压入式通风/数值模拟/空气能位差Key words
three-dimensional permeability model/surface air leakage/forced ventilation/numerical simulation/air energy difference分类
矿业与冶金引用本文复制引用
李鹏,戴广龙,叶庆树,唐明云,聂士斌,宋小林..压入式通风条件下浅埋煤层工作面采空区漏风规律研究[J].煤矿安全,2019,50(9):174-178,5.
