The stability indexes of branched airflow of ventilation network in coal mine

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The stability of branched airflow of ventilation network is guarantee of safety in production of coal mine. Two indexes which stand for the stability of branches of ventilation network in coal mine were put forward in this paper, that are airflow intensity and stability index of branched airflow. The airflow stability of working place was divided into different grade according to the stability index. The conclusion has great significance for safety in production of coal mine.
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