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An Overview of Airflow Catastrophe Induced by Methane Draft Pressure in Coal Mine Roadways

  • Kai Wang
  • Lei Li
  • Aitao Zhou
  • Zeqi Wu
  • Shan Li
Conference paper

Abstract

The densities of airflow will be changed by the influx of high-concentration gas, and methane draft pressure will be formed in roadways with height differences. The existence of methane draft pressure may also cause air volume reduction, airflow stagnation and even lead to airflow reversal in some roadways of ventilation networks, resulting in airflow disorder. In recent years, a number of achievements have been made in studies on airflow induced by methane draft pressure with different roadway conditions; however, currently available literature fails to provide a summary study on airflow catastrophes induced by methane draft pressure. Therefore, this paper introduces the definition of methane draft pressure, its influences on ventilation networks, experimental and simulation research, and influence factors and prevention measures of airflow disorder induced by methane draft pressure. It is concluded that methane draft pressure is an important area for future studies on airflow disorder in roadways to cover.

Keywords

Methane draft pressure Airflow disorder Summary study 

Notes

Acknowledgements

This research is financially supported by the State Key Research Development Program of China (Grant No. 2016YFC0600708, 2016YFC0801402); National Natural Science Foundation of China (Grant No. 51474219, 51604278, 51774292); the Open Funds of Hebei State Key Laboratory of Mine Disaster Prevention (Grant No. KJZH2017K02); the Yue Qi Distinguished Scholar Project, China University of Mining and Technology, Beijing; the Yue Qi Young Scholar Project, China University of Mining and Technology, Beijing.

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Copyright information

© Science Press and Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  • Kai Wang
    • 1
    • 2
    • 3
  • Lei Li
    • 2
  • Aitao Zhou
    • 2
  • Zeqi Wu
    • 2
  • Shan Li
    • 2
  1. 1.Beijing Key Laboratory for Precise Mining of Intergrown Energy and ResourcesChina University of Mining and TechnologyBeijingChina
  2. 2.School of Resource and Safety EngineeringChina University of Mining and TechnologyBeijingChina
  3. 3.Hebei State Key Laboratory of Mine Disaster PreventionNorth China Institute of Science and TechnologyBeijingChina

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