煤炭工程 ›› 2020, Vol. 52 ›› Issue (7): 83-87.doi: 10.11799/ce202007019

• 生产技术 • 上一篇    下一篇

基于双示踪技术浅埋煤层采空区地表漏风规律研究

叶庆树1,戴广龙2,李鹏3,唐明云2,聂士斌2,宋小林4   

  1. 1. 神东煤炭集团有限责任公司
    2. 安徽理工大学
    3. 神华神东煤炭集团有限责任公司
    4. 中国矿业大学安全工程学院
  • 收稿日期:2019-06-13 修回日期:2019-08-15 出版日期:2020-07-15 发布日期:2020-08-21
  • 通讯作者: 唐明云 E-mail:mytang@aust.edu.cn

Study on the Law of Surface Air Leakage in Shallow Coal Seam Gob Based on Dual-element Tracing Technology

  • Received:2019-06-13 Revised:2019-08-15 Online:2020-07-15 Published:2020-08-21

摘要: 为研究浅埋煤层开采抽出式通风工作面上覆地表裂隙对采空区漏风的影响,以补连塔煤矿22310工作面采空区为研究对象,采用双元示踪技术,对该抽出式通风工作面采空区地表漏风规律进行动态试验研究。研究结果表明:该工作面采空区对应地表有效漏风走向范围为0~[123m,137m)|在工作面倾向上,靠近采空区回风侧漏风大于进风侧|通过计算比较得到,越靠近工作面,采空区内漏风风速越大。该研究对类似工作面采空区漏风防治有一定的指导意义。

关键词: 浅埋煤层, 地表漏风范围, 抽出式通风工作面, 双示踪技术

Abstract: Air leakage of surface in gob of shallow coal seam working face is one of the main reasons leading to spontaneous combustion of residual coal in gob. In this study, the gob of 22310 working face of Bulianta Coal Mine was taken as the research object, the dynamic test of the surface effective air leakage range of gob in working face with exhaust ventilation was carried out by using the dual-element tracing technology and the actual mining speed of the working face. Research results showed that the effective air leakage range corresponding to the gob of the working face is 0~123-137 m along the working face strike. Moreover, the air leakage volume on the return side of gob is larger than that on the intake side. Through calculation and comparison, the closer to the working surface, the greater the wind speed of the air leakage in the gob. The research has a certain guiding role in preventing spontaneous combustion of residual coal in gob in similar working face.

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