Influence of gas ventilation pressure on the stability of airways airflow
作者： Aitao Zhou , Kai Wang , Longgang Wu , Yiwen Xiao
DOI: 10.1016/J.IJMST.2017.09.004
关键词:
摘要: Abstract Coal mine ventilation is an extremely complicated system that can be affected by many factors. Gas pressure one of important factors disturb the stabilization airflow in airways. The formation and characteristics gas were further elaborated, numerical simulations conducted to verify role stability airway airflow. Then a case study stagnation accident occurred Tangshan Mine was performed. results show under condition upward ventilation, direction branch same main fan, branches beside may reversed. greater is, more obvious reversion is. Moreover, sequence paralleled related velocity length branch. Under downward filled with Methane hard discharge; therefore, accumulation harmful than ventilation.
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