• 论文
主办单位:煤炭科学研究总院有限公司、中国煤炭学会学术期刊工作委员会
煤层瓦斯含量井下一站式自动化精准测定方法
  • Title

    Method of underground integrated automatic and accurate determination of coalbed gas content

  • 作者

    周福宝康建宏王有湃张冉

  • Author

    ZHOU Fubao, KANG Jianhong, WANG Youpai, ZHANG Ran

  • 单位

    中国矿业大学 安全工程学院中国安全生产科学研究院

  • Organization
    1.School of Safety Engineering,China University of Mining and Technology,Xuzhou221116,China;2.China Academy of Safety Science and Technology,Beijing100012,China
  • 摘要

    煤层瓦斯含量是预测煤与瓦斯突出危险性和评价矿井瓦斯储量的基础参数。 针对现有测 定方法需要井上和井下分阶段测量测定周期长的不足提出了煤层瓦斯含量井下一站式自动化测 定新方法介绍了煤样井下直接破碎系统瓦斯解吸量自动化计量系统和数据自动采集处理系统等 关键单元构成及主要技术指标。 其次针对现有测定方法中损失瓦斯量估算误差大的难题考虑煤 孔隙结构的非均匀性建立了瓦斯分数阶扩散模型以此准确推算煤样暴露过程的损失瓦斯量;搭建 了模拟井下煤层瓦斯含量测定流程的误差分析系统通过设定不同吸附平衡压力来改变瓦斯含量, 设定不同暴露时间来改变损失瓦斯量并通过与传统模型对比来验证分数阶模型的准确性。 实验表明分数阶模型推算损失瓦斯量的误差在10%以内测定瓦斯含量的误差在5%以内而传统 模型和幂函数模型测定瓦斯含量的误差达到 20%以上。 最后基于煤层瓦斯含量井下一站式自动 化测定方法研发了 CWH12 型煤层瓦斯含量测定仪在淮南矿区朱集东矿和潘三矿进行了现场应 用并使用煤矿原有瓦斯含量测定设备对同一地点同一深度的煤样进行了测定比较。 现场试验表 明CWH12 型煤层瓦斯含量测定仪比原有设备的测定值平均提高了 13.5%测量时间缩短至 1.5 h 以内实现了煤层瓦斯含量的快速精准测定


  • Abstract

    Coalbed gas content is one of the basic parameter for predicting the risk of coal and gas outburst and evaluating mine gas reserve. In view of the shortcomings that the existing methods need to determine the gas content with the measurements at surface and underground and are timeconsuming,an underground integrated method for determining coalbed gas content is proposed. The composition and main technical indexes of key units such as coal sample underground direct crushing system,gas desorption automatic measurement system and data automatic collection and processing system are introduced. In terms of the large estimation error of gas loss in the existing methods and considering the heterogeneity of coal pore structure,a gas fractional diffusion model is established to accurately calculate the gas loss during coal exposure. An error analysis system simulating the underground coalbed gas content determination is established. The gas content is changed by setting different adsorption equilibrium pressures and different exposure times. The accuracy of the fractional model is verified by comparing it with the traditional model. The experiment shows that the error of calculating gas loss by fractional model is less than 10%,and the error of measuring gas content is less than 5%,while the error of measuring gas content by traditional model and power function model is more than 20%. Finally,based on underground integrated method of determining coalbed gas content,the CWH12 coalbed gas content meter is invented and applied in the Zhujidong and Pansan coal mines in the Huainan mining area. The traditional measurement equipment is used to measure gas content and compare with CWH12 for the coal samples at the same location and depth. The field test shows that compared with the original equipment,the measurement values of CWH12 is improved by 13.5% on average,and the measurement time is shortened to less than 1.5 h,realizing the rapid and accurate determination of coalbed gas content.

  • 关键词

    煤层瓦斯含量直接测定方法损失瓦斯量测定装备快速测定

  • KeyWords

    coalbed gas content,direct determination method,lost gas;measuring equipment,rapid determination

  • 引用格式
    周福宝,康建宏,王有湃,等.煤层瓦斯含量井下一站式自动化精准测定方法[J].煤炭学报,2022,47(8):2873-2882.
  • Citation
    ZHOU Fubao,KANG Jianhong, WANG Youpai,et al.Method of underground integrated automatic and accurate determination of coalbed gas content[J].Journal of China Coal Society,2022,47(8):2873-2882.
  • 相关专题

主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会

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