College of Resources and Environmental Engineering, Guizhou University
Guizhou Mine Safety Scientific Research Institute Co. , Ltd.
Guizhou Coal Mine Design Research Institute Co. , Ltd.
Guizhou Faer Coal Industry Co. , Ltd.
College of Energy Science and Engineering, Henan Polytechnic University

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4.53~5.88m3/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。

As it’s hard to meet the demand of efficient and collaborative management in gas occurrence areas using the extraction method with fixed hole spacing, we took the working face of Linhua Coal Mine as the engineering background, and proposed a differentiated extraction technology based on visualization of gas geology to replace the previous extensive design mode of extraction borehole. Firstly, input the information related to gas geology into the gas geology visualization system and realize the dynamic display and visualization of gas geology information on the working face. Then, 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 “apply extraction where it is required to”. Finally, 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 showed that, the overall extraction time of the working face was controlled within 30 ~ 150 d, the residual gas content was in the range of 4. 53 ~ 5. 88 m3 / t, the concentration of return air gas was in the range of 0. 22%~0. 41%, and the concentration of gas in the upper corner was in the range of 0. 30%~0. 47%, the efficient and collaborative treatment of gas disaster was realized in the working face.

贵州省科技支撑计划项目(黔科合支撑[2021]一般348,黔科合支撑[2022]一般005,黔科合支撑[2022]一般246);贵州省基础研究(自然科学)计划项目(黔科合基础-ZK[2023]一般199)

衡献伟,李希建,李文彬,等.基于瓦斯地质可视化的差异化协同抽采技术研究[J].煤炭工程,2024,56(4):79-84.