急倾斜厚煤层瓦斯分源抽采技术的应用

基金项目:

山西省科技产业化环境建设项目（2012072018）

详细信息

Application of gas drainage technology with separated sources in steep thick seam

1.
College of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Xinjiang Dahuangshan Yuxin Coal Co., Ltd., Fukang 831500, China

摘要: 为解决大黄山煤矿735综采工作面回采期间瓦斯超限问题，分析了工作面瓦斯涌出的主要来源，提出采用瓦斯分源抽采技术抽采瓦斯的方法，即优化抽采管路，通过穿层钻孔直接抽采采空区瓦斯，实现采空区与本煤层瓦斯分源抽采。应用结果表明，实施瓦斯分源抽采后，工作面回风流瓦斯体积分数稳定在0.36%～0.46%，上隅角瓦斯体积分数稳定在0.4%～0.6%，瓦斯抽采率平均值达59.17%。
- 急倾斜厚煤层 /
- 瓦斯超限 /
- 采空区 /
- 分源抽采 /
- 穿层钻孔
Abstract: In order to solve problems of gas overrunning in No.735 Coal Mining Face of Dahuangshan Mine, a gas drainage technology with separated sources was put forward based on analysis of main sources of gas emission of the coal mining face, that is, gas in goaf is drainaged directly through crossing borehole by optimizing drainage pipelines, so as to realize gas drainage in goaf and mining seam separately. The application results show that gas volume fraction in air return flow is 0.36%-0.46%, gas volume fraction in upper corner is 0.4%-0.6%, and gas drainage average rate is 59.17% after the gas drainage conducted with separated sources.
- steep thick seam /
- gas overrunning /
- goaf /
- gas drainage with separated sources /
- crossing borehole