煤炭工程 ›› 2024, Vol. 56 ›› Issue (4): 79-84.doi: 10. 11799/ ce202404012

• 生产技术 • 上一篇    下一篇

基于瓦斯地质可视化的差异化协同抽采技术研究

衡献伟,李希建,李文彬,左金芳,武瑞龙,张书金,陈蒙磊,刘晓   

  1. 1. 贵州大学 资源与环境工程学院,贵州 贵阳 550025 2. 贵州省矿山安全科学研究院有限公司,贵州 贵阳 550025 3. 贵州省煤矿设计研究院有限公司,贵州 贵阳 550025 4. 贵州发耳煤业有限公司,贵州 六盘水 553017 5. 河南理工大学 能源科学与工程学院,河南 焦作 454000
  • 收稿日期:2023-07-05 修回日期:2024-03-24 出版日期:2023-04-20 发布日期:2024-12-09
  • 通讯作者: 李文彬 E-mail:liwenbinhpu@126.com

Differentiated collaborative gas extraction technology based on gas geological visualization

  • Received:2023-07-05 Revised:2024-03-24 Online:2023-04-20 Published:2024-12-09

摘要:

为了解决突出煤层固定孔间距的抽采方式难以满足瓦斯灾害的高效、协同治理的需求, 以林华煤矿2091工作面为工程背景, 提出一种基于瓦斯地质可视化的差异化协同抽采技术,取代以往抽采钻孔的粗放设计模式。首先将瓦斯地质等相关信息录入瓦斯地质可视化系统, 通过系统实现工作面瓦斯地质信息的动态展示和可视化; 其次制定瓦斯含量界定准则, 识别与划分工作面的低瓦斯区、中瓦斯区和高瓦斯区, 在“ 应抽尽抽” 的原则下, 结合采掘进度差异化设计抽采钻孔; 最后通过防突信息分析模块自动生成防突预测图, 有效识别瓦斯治理空白带, 进一步优化抽采钻孔设计。研究表明: 2091工作面整体抽采时间控制在30~150d, 残余瓦斯含量为4. 53~5. 88 m3/t, 回风瓦斯浓度为0. 22%~0. 41%, 上隅角瓦斯浓度为0. 30%~0. 47%, 实现了对2091 工作面瓦斯高效、协同治理。

关键词: 瓦斯治理 , 瓦斯地质 , 地质可视化 , 瓦斯抽采钻孔 , 协同抽采技术

Abstract:

With the gradual complexity of coal mining conditions, the difficulty of gas management in outburst coal seam is gradually increasing, and the extraction method with fixed hole spacing is difficult to meet the demand of efficient and collaborative management in gas occurrence areas. Taking 2091 working face of Linhua Coal Mine as the engineering background, a differentiated extraction technology based on visualization of gas geology is proposed to replace the previous extensive design mode of extraction borehole. Specifically, the information related to gas geology is input into the gas geology visualization system to realize the dynamic display and visualization of gas geology information on the working face through the system; Define the gas content criteria, identify and divide the low gas area, medium gas area and high gas area in the working face area, and design differentiated extraction boreholes according to the mining schedule under the principle of "should be pumped to the full"; Through the anti-outburst information analysis module, the prediction chart is automatically generated to effectively identify the blank zone of gas control and further optimize the design of extraction borehole. The research shows that the overall extraction time of 2091 working face is controlled within 30~150d, the residual gas content is in the range of 4.53~5.88m3/t, the concentration of return air gas is in the range of 0.22~0.41%, and the concentration of gas in the upper corner is in the range of 0.30~0.47%, so as to realize the efficient and collaborative treatment of gas disaster in 2091 working face.

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